Coating compositions having improved scratch resistance, coated substrates and methods related there

专利摘要:
Coating compositions are provided which are formed from components comprising (a) at least one polysiloxane comprising at least one reactive functional group; (b) at least one reactant comprising at least one functional group that is reactive with at least one functional group selected from the at least one reactive functional group of the at least one polysiloxane and at least one functional group of at least one reactant; and (c) a plurality of particles, wherein each component is different, and wherein the at least one reactive functional group of the at least one polysiloxane and the at least one reactive functional group of the at least one reactant are substantially nonreactive with the particles. A multi-component composite coating composition formed from a basecoat and a topcoat deposited from the curable coating composition also is provided. The multi-component composite coating compositions of the invention provide highly scratch resistant color-plus-clearcoatings capable of retaining scratch resistance after weathering.
公开号:KR20020056882A
申请号:KR1020027001351
申请日:2000-07-31
公开日:2002-07-10
发明作者:앤더슨로렌스지；바르칵카렌에이；대소숀에이；하트만마비스이；하예스데보라이；혹스웬더토마스알；커스터카이마리엘；멕칼럼그레고리제이；나카지마마사유키；올슨커트지；새드베리리차드제이；심슨드니스에이；티옙지셔린；윌트트루먼에프
申请人:랜닝 지. 브라이어；피피지 인더스트리즈 오하이오, 인코포레이티드；
IPC主号:

专利说明:

Coating compositions, coated substrates and related methods with improved scratch resistance {COATING COMPOSITIONS HAVING IMPROVED SCRATCH RESISTANCE, COATED SUBSTRATES AND METHODS RELATED THERETO}
[2] This application is part of US Patent Application Serial Nos. 09 / 489,042 and 09 / 489,043, filed Jan. 21, 2000, the applications of which are filed July 30, 1999, US Patent Application No. 09 / 365,069 Part of the issue is pending application. US Patent Application Nos. 09 / 489,042 and 09 / 489,043 take precedence over US Patent Application No. 60 / 171,899, filed December 23, 1999.
[3] Color + transparent coating systems, including the application of colored undercoats to substrates followed by the application of a clear coat over the undercoats, have become increasingly popular as original finishes for many consumer products, including, for example, automobiles. The color + transparent coating system mostly has significant appearance characteristics such as gloss and clarity due to the transparent film. Such color + transparent coating systems have gained popularity for automotive, aerospace applications, flooring such as ceramic tiles and wooden floors, packaging coatings and the like.
[4] Topcoat coating compositions, particularly compositions used in the manufacture of transparent coatings in automotive color + transparent coating systems, are susceptible to damage from a number of environmental factors as well as defects that occur during the assembly process. Defects during the assembling process include paint defects during application or curing of the undercoat or the transparent coat. Damage caused by environmental factors may include acidic precipitation, exposure to sunlight, high relative humidity and high temperatures, defects caused by contact with scratched surfaces, and small, hard objects that produce fragments on the coated surface. There is a defect due to the collision.
[5] Typically, harder, more highly crosslinked films may exhibit improved scratch resistance, but the films are less flexible and are resistant to fragmentation or thermal cracking due to the film's softness resulting from high crosslink density. Much more sensitive. More flexible, less crosslinked films do not tend to fragment or thermally crack, but are susceptible to scratching, water staining, and susceptibility to acid corrosion due to the low crosslink density of the cured film.
[6] Moreover, elastomeric automotive parts and accessories, such as elastomeric bumpers and hoods, are typically "separately" coated and shipped to an automobile assembly plant. Coating compositions applied to such elastomeric substrates are typically very flexible so that the coating can be blended with the substrate without cracking. In order to achieve this essential flexibility, coating compositions used in elastomeric substrates often employ flexible aids that act to produce coatings with lower crosslink density or lower the overall film glass transition temperature (Tg). It is formulated to include. Acceptable flexibility properties can be achieved by these blending techniques, while the techniques can also produce a more flexible film that is easy to scratch. As a result, much cost and care must be taken to pack the coated parts to prevent scratching the coated surface during shipment to the automotive assembly plant.
[7] Many patents disclose alcohol-aqueous solutions of partial condensates of silanol of formula RSi (OH) ₃ in which alcohols are at least 70% by weight of partial condensates of CH ₃ Si (OH) ₃ . It teaches the use of the coating material containing the colloidal silica dispersion liquid in it. Representative, non-limiting examples include US Pat. No. 3,986,997; 4,027,073; 4,239,738; 4,310,600; And 4,410,594.
[8] U.S. Patent No. 4,822,828 discloses (a) 50 to 85 weight percent vinyl functional silanes based on the total weight of the dispersion, (b) 15 to 50 weight percent multifunctional acrylate based on the total weight of the dispersion, and ( c) teaching the use of vinyl functional silanes in aqueous irradiated curable coating compositions, optionally comprising 1 to 3% by weight of photoinitiator. The vinyl functional silane is a partial condensate of silica and silane, wherein at least 60% of the silane is of the formula (R) _a Si (R ′) _b (R ″) _c where R is allyl or vinyl functional alkyl R 'is hydrolyzable alkoxy or methoxy; R''is non-hydrolyzable saturated alkyl, phenyl or siloxy, a + b + c is 4, a≥1; b≥1; c≥0 Vinyl functional silanes. The patent discloses that the coating composition can be cured by applying it to a plastic substrate and exposing it to an ultraviolet or electron beam to form a substantially transparent wear resistant layer.
[9] U. S. Patent No. 5,154, 759 teaches polishing formulations comprising reactive amine functional silicone polymers and one or more other components commonly used in polishing formulations. One such constituent disclosed in this patent is an abrasive and teaches aluminum silicate, diatomaceous earth, pumice, clay, kaolin, silica, tripoly, hydrated calcium silicate, chalk, colloidal clay, magnesium oxide red iron oxide or tin oxide It is.
[10] U. S. Patent No. 5,686, 012 discloses modified particles comprising inorganic colored or magnetic particles as core particles, and one or more polysiloxanes modified with one or more organic groups coated on the surface of the core particles. The patent also discloses a method of making the modified particles as well as an aqueous paint comprising the modified particles as a paint base material and pigment.
[11] U. S. Patent No. 5,853, 809 discloses a transparent coating in a color + transparency system with improved scratch resistance due to the incorporation of inorganic particles, such as colloidal silica, surface modified by reactive coupling agents via covalent bonds into the coating composition.
[12] Despite recent improvements to color + transparent coating systems, automotive coatings have improved initial post-weather ("owned") scratch resistance as well as good initial scratch resistance without the film's smoothness due to high crosslink density. There is still a need for a top coat. Furthermore, it may be advantageous to provide a topcoat for elastomeric substrates for use in the automotive industry that is flexible and scratch resistant.
[13] Summary of the Invention
[14] In one embodiment, the present invention relates to a composition formed from a component containing:
[15] (a) one or more polysiloxanes containing one or more reactive functional groups;
[16] (b) at least one reactant containing at least one reactive functional group of said at least one polysiloxane and at least one functional group reactive with at least one functional group selected from at least one functional group of at least one reactant; And
[17] (c) a plurality of particles selected from inorganic particles, composite particles, and mixtures of said particles,
[18] Wherein each component is different and at least one reactive functional group of the at least one polysiloxane and at least one functional group of the at least one reactant are substantially non-reactive with the particles.
[19] In another embodiment, the present invention relates to a composition formed from a component containing:
[20] (a) one or more polysiloxanes containing one or more reactive functional groups;
[21] (b) one or more functional groups containing one or more functional groups reactive with one or more functional groups selected from one or more functional groups of the one or more polysiloxanes and one or more functional groups of one or more reactants; And
[22] (c) a plurality of particles,
[23] Wherein each component is different and one or more reactive functional groups of the one or more polysiloxanes are substantially non-reactive with the plurality of particles and the scratch resistance retained upon curing of the composition does not include the plurality of particles. It has a value greater than the scratch resistance that is retained at the time.
[24] In yet another embodiment, the invention relates to a composition formed from a component containing:
[25] (a) one or more polysiloxanes containing one or more reactive functional groups;
[26] (b) one or more functional groups containing one or more functional groups reactive with one or more functional groups selected from one or more functional groups of the one or more polysiloxanes and one or more functional groups of one or more reactants; And
[27] (c) a plurality of particles,
[28] Wherein each component is different and at least one reactive functional group of the at least one polysiloxane is substantially non-reactive with the particles and the scratch resistance retained upon curing of the composition is retained upon curing of the composition that does not include the plurality of particles. It has a value greater than the scratch resistance.
[29] In another embodiment, the present invention relates to a composition formed from a component containing:
[30] (a) polysiloxanes containing at least one reactive functional group and containing at least one formula (I); And
[31] (b) a plurality of particles having an average particle size of less than 100 nanometers prior to binding to the composition,
[32] Wherein each component is different and at least one reactive functional group of the at least one polysiloxane is non-reactive with the particles.
[33] R ¹ _n R ² _m SiO _{(4-nm) / 2}
[34] Where
[35] Each R ¹ may be the same or different and is H, OH, a monovalent hydrocarbon group or a monovalent siloxane group;
[36] Each R ² may be the same or different and represents a group comprising one or more reactive functional groups and if the polysiloxane is a partial condensate of silanol, less than 70% by weight of the partial condensate may be selected from CH ₃ Si (OH) ₃ . Partial condensates.
[37] Also disclosed within the scope of this invention is a coated substrate comprising a substrate and a composition coated over at least a portion of the substrate, wherein the composition is any of the above compositions according to the invention. The present invention also provides a method of coating a substrate, including applying any of the above compositions according to the invention over at least a portion of the substrate. A coated metallic substrate is also disclosed, including a metallic substrate and a composition applied over at least a portion of the metallic substrate, wherein the composition is any of the above compositions in accordance with the present invention. Automotive substrates coated, including automotive substrates coated at least in part by any of the above compositions according to the present invention, are also disclosed within the scope of the present invention. The invention also provides a method of making a coated automotive substrate comprising obtaining an automotive substrate and applying any of the above compositions in accordance with the present invention on at least a portion of the automotive substrate.
[38] Also provided is a multicomponent composite coating composition comprising a undercoat deposited from a colored coating composition and any one of the above coating compositions applied over at least a portion of the undercoat in accordance with the present invention to form a top coat. The present invention also provides a method of making a multicomponent composite coating composition comprising: (a) a method of applying a colored composition to a substrate to form a undercoat; And (b) applying a top coat composition over at least a portion of the bottom coat to form a top coat thereon, wherein the top coat is any of the above compositions in accordance with the present invention.
[39] Also disclosed in another embodiment of the present invention is a method of improving the scratch resistance of a polymeric substrate or polymeric coating, including applying according to the invention any of the above compositions to a polymeric substrate or polymeric coating. The present invention also provides a method for retaining the gloss of a polymeric substrate or polymeric coating for a predetermined time, including applying any of the above compositions to at least a portion of the polymeric substrate or polymeric coating in accordance with the present invention. . Also provided are methods of revitalizing the gloss of a polymeric substrate or polymeric coating, including applying any of the compositions according to the invention to at least a portion of the polymeric substrate or polymeric coating.
[40] In addition to the operational examples, or otherwise indicated, all numbers representing the amounts of ingredients, reaction conditions, etc. used in the specification and claims are to be understood as being limited to the term "about" in all of the above cases. Accordingly, unless indicated to the contrary, the numerical variables set forth in the following specification and appended claims are approximations that may vary depending upon the desired properties sought to be obtained by the present invention. In any case, to avoid limiting the application of the equivalence principle to the claims, each numerical variable should be construed by applying the conventional approximation technique at least in light of the reported numbers of significance.
[41] Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the invention are approximations, the numerical values set forth in the specific examples are reported as accurate as possible. However, certain values inherently contain some errors that are essentially generated from the standard deviation found in their respective test measurements.
[1] Some embodiments of the present invention relate to a composition comprising one or more polysiloxanes containing one or more reactive functional groups, and a plurality of particles, wherein the reactive functional groups of the one or more polysiloxanes are substantially non-reactive with the particles. Embodiments of the present invention also include one or more reactive groups containing one or more functional groups that are reactive with one or more functional groups selected from one or more polysiloxanes, one or more reactive functional groups of one or more polysiloxanes, and one or more functional groups of one or more reactants, and It relates to a composition containing a plurality of particles in which the reactive functional group of the at least one polysiloxane is substantially unreactive with the particles. Other embodiments of the present invention relate to a substrate coated with the composition. Further embodiments of the present invention relate to a method of improving the scratch resistance of a substrate. It will be apparent to those skilled in the art that specific embodiments of the present invention relate to some or all of these embodiments as well as other desired embodiments.
[42] 1 is a transmission electron microscope (30,000 × magnification) photograph of a cross section of a cured transparent topcoat composition of the invention comprising both colloidal silica and polysiloxane;
[43] FIG. 2 is a transmission electron microscope (30,000 × magnification) photograph of a cross section of a comparative example of a transparent top composition comprising colloidal silica but not polysiloxane; FIG.
[44] 3 is an electron transmission micrograph of the cross section of the cured transparent topcoat composition of FIG. 1, seen only at 54,000 × magnification. FIG.
[45] 4 is a transmission electron microscope (105,000 × magnification) photograph of a cross section of a cured transparent topcoat composition of the present invention comprising a preformed dispersion of colloidal silica and polysiloxane;
[46] 5 is a graph of scratch depth as a function of load at a given scratch length showing scratch resistance of a commercial bicomponent polyurethane coating; And
[47] FIG. 6 is a graph of scratch depth as a function of load at a given scratch length showing scratch resistance of a two-component coating comprising colloidal silica and polysiloxane of the present invention.
[48] FIG. 7 is a transmission electron microscope (typically 105,000 × magnification) photograph of a cross section of a cured transparent top composition of the present invention comprising a preformed polysiloxane dispersion comprising 2 percent colloidal silica. to be.
[49] FIG. 8 is a transmission electron microscope (105,000 × magnification) photograph of a cross section of a cured transparent top composition of the present invention comprising a preformed polysiloxane dispersion comprising 2 percent colloidal silica (angled with respect to the surface of the coating material). to be.
[50] FIG. 9 is a transmission electron microscope (typically 105,000 × magnification) photograph of a cross section of a cured transparent top composition of the present invention comprising a preformed polysiloxane dispersion comprising 8.5 percent colloidal silica. to be.
[51] 10 is a transmission electron microscope (105,000 × magnification) photograph of a cross section of a cured transparent top composition of the present invention comprising a preformed polysiloxane dispersion comprising 8.5 percent colloidal silica (angled with respect to the surface of the coating material) to be.
[52] In one embodiment, the invention is directed to a deposit formed from a component comprising:
[53] (a) one or more polysiloxanes containing one or more reactive functional groups;
[54] (b) one or more functional groups containing one or more functional groups reactive with one or more functional groups selected from one or more functional groups of the one or more polysiloxanes and one or more functional groups of one or more reactants; And
[55] (c) a plurality of particles selected from inorganic particles, composite particles, mixtures of the above,
[56] Wherein each component is different and at least one reactive functional group of the at least one polysiloxane and at least one functional group of the at least one reactant are substantially unreactive with the particles.
[57] As used herein, “prepared from” refers to the term, for example, claiming “comprising” without limitation. As such, a composition prepared from “list of recited components” is a composition comprising at least these recited components, and is intended to further include other, non-cited components during the preparation of the composition.
[58] The term "reactive" as used herein also refers to a functional group that forms a covalent bond with another functional group under conditions sufficient to cure the composition.
[59] As used herein, the phrase "each component is different" refers to components in the composition that do not have the same chemical formula as the other components.
[60] Moreover, as used herein, "substantially nonreactive" means that the one or more polysiloxanes (a) and, if present, the functional groups of the one or more reactants do not tend to form covalent bonds with the particles.
[61] In a further embodiment, the present invention relates to the aforementioned cured composition, wherein one or more reactants are present during the formation of the coating composition. As used herein, "one or more reactants" refers to any substance comprising a functional group reactive with one or more functional groups selected from one or more functional groups of one or more polysiloxanes, and one or more functional groups of such materials.
[62] In another embodiment, the present invention relates to a composition formed from a component containing:
[63] (a) one or more polysiloxanes containing one or more reactive functional groups;
[64] (b) at least one reactant comprising at least one reactive functional group of said at least one polysiloxane and at least one functional group reactive with at least one functional group selected from at least one functional group of at least one reactant; And
[65] (c) a plurality of particles,
[66] Wherein each component is different and at least one reactive functional group of the at least one polysiloxane is substantially non-reactive with the plurality of particles and the scratch resistance value retained upon curing of the composition does not include the plurality of particles. Has a value greater than the scratch resistance value retained upon curing of the composition.
[67] The term "holding scratch resistance" referred to in the above specification and the appended claims will be described in detail below.
[68] As used herein, the term “curing” as used in connection with a “composition upon curing” will mean that any crosslinkable components of the composition are at least partially crosslinked. In some embodiments of the invention, the crosslink density, ie the degree of crosslinking, of the crosslinkable components ranges from 5 to 100% of complete crosslinking. In other embodiments, the crosslink density ranges from 35 to 85% of complete crosslinking. In other embodiments, the crosslink density ranges from 50 to 85% of complete crosslinking. One skilled in the art can determine the presence and extent of crosslinking, ie crosslink density, by various methods such as dynamic thermal analysis (DMTA) using a TA device DMA 2980 DMTA analyzer performed under nitrogen. Will understand. The method measures the glass transition temperature and the crosslink density of the glass film of the coating or polymer. The physical properties of the cured material are related to the structure of the crosslinked network.
[69] In another embodiment, the present invention relates to a composition formed from a component containing:
[70] (a) hydroxyl groups, carboxyl groups, isocyanate groups, protected polyisocyanate groups, primary amine groups, secondary amine groups, amide groups, carbamate groups, urea groups, urethane groups, vinyl groups, unsaturated ester groups, At least one selected from, for example, acrylate groups and methacrylate groups, maleimide groups, fumarate groups, onium salt groups such as sulfonium groups and ammonium groups, anhydride groups, hydroxy alkylamide groups and epoxy groups One or more polysiloxanes containing reactive functional groups; Wherein m and n satisfy the requirements of 0 <n <4, 0 <m <4 and 2 ≦ (m + n) <4; If the at least one polysiloxane is a partial condensate of silanol, then 70% by weight of the partial condensate is a partial condensate of CH ₃ Si (OH) ₃ ;
[71] (b) a plurality of particles having an average particle size of less than 100 nanometers prior to binding to the composition, wherein at least one reactive functional group of the at least one polysiloxane is substantially non-reactive with the particles.
[72] In another embodiment, the invention relates to a composition wherein at least one polysiloxane containing at least one reactive functional group has at least one unit of formula (I):
[73] Formula I
[74] R ¹ _n R ² _m SiO _{(4-nm) / 2}
[75] Where
[76] Each R ¹ may be the same or different and is H, OH, a monovalent hydrocarbon group or a monovalent siloxane group;
[77] Each R ² may be the same or different and represents a group comprising one or more reactive functional groups;
[78] m and n satisfy the requirements of 0 <n <4, 0 <m <4 and 2≤ (m + n) <4.
[79] As used herein, “monovalent hydrocarbon group” means a monovalent group having only carbon-based backbone repeat units. As used herein, “monovalent” refers to a substituent that forms only one single covalent bond as a substituent. For example, monovalent groups on one or more polysiloxanes will form one single covalent bond to silicon atoms in the main chain of one or more polysiloxane polymers. As used herein, "hydrocarbon group" is intended to include both branched and unbranched hydrocarbon groups.
[80] Thus, when referring to "monovalent hydrocarbon groups", the hydrocarbon groups may be branched or unbranched, acyclic or cyclic, saturated or unsaturated, or aromatic, and 1 to 24 (or 3 to 24 for aromatic groups). May contain a carbon atom. Non-limiting examples of such hydrocarbon groups include alkyl, alkoxy, aryl, alkaryl and alkoxyaryl groups. Non-limiting examples of lower alkyl groups include methyl, ethyl, propyl and butyl groups. As used herein, "lower alkyl" refers to an alkyl group having 1 to 6 carbon atoms. One or more of the hydrogen atoms of the hydrocarbon may be substituted with a heteroatom. As used herein, “heteroatom” means elements other than carbon, such as oxygen, nitrogen and halogen atoms.
[81] As used herein, "siloxane" means a group comprising a backbone comprising two or more -SiO- groups. For example, the siloxane groups represented by R ¹ discussed above and R discussed below can be linear or unbranched, linear or cyclic. The siloxane groups can be substituted with pendant organic substituents such as alkyl, aryl and alkaryl groups. The organic substituents can be substituted with heteroatoms such as oxygen, nitrogen and halogen atoms, reactive functional groups such as the reactive functional groups discussed above in connection with R ² and mixtures of any of the above groups.
[82] Of course, "at least one polysiloxane comprising at least one unit of formula (I)" is a polymer containing at least two Si atoms per molecule. The term "polymer" as used herein includes oligomers, including without limitation both homopolymers and copolymers. It is of course also possible that the one or more polysiloxanes may comprise linear, branched, dendritic or cyclic polysiloxanes.
[83] M and n shown in at least one of the above formulas I satisfy 0 <n <4, 0 <m <4 and 2 ≦ (m + n) <4, respectively. When (m + n) is 3, the value represented by n may be 2 and the value represented by m is 1. Similarly, when (m + n) is 2, the values represented by n and m are each 1.
[84] In another embodiment, the invention provides that R ² may be the same or different and that hydroxyl groups, carboxyl groups, isocyanate groups, protected polyisocyanate groups, primary amine groups, secondary amine groups, amide groups, carbamate Groups, urea groups, urethane groups, vinyl groups, unsaturated ester groups such as acrylate groups and methacrylate groups, maleimide groups, fumarate groups, onium salt groups such as sulfonium groups and ammonium groups, The above-mentioned composition is directed to a group comprising at least one reactive functional group selected from anhydride groups, hydroxy alkylamide groups and epoxy groups.
[85] In one embodiment, the present invention relates to the aforementioned cured composition, wherein the at least one polysiloxane comprises a reactive functional group that is a thermally curable functional group. In optional embodiments, one or more reactive functional groups of the polysiloxane may be curable by ionizing or actinic radiation. In another optional embodiment, the polysiloxane may comprise one or more functional groups curable by thermal energy and one or more functional groups curable by ion rays or actinic rays.
[86] As used herein, "ion line" means secondary energy generated by the conversion of high energy radiation and / or this electron or other particle energy into neutrons or gamma rays, where the energy is at least 30,000 electron volts, and 50,000 To 300,000 electron volts. Various types of ion rays such as X-rays, gamma and beta rays are suitable for this purpose, but accelerated high energy electron or electron beam devices are preferred. The amount of ion beam for curing the composition may vary in units of rods according to the present invention by factors such as the components of the coating formulation, the thickness of the coating of the substrate, the temperature of the coating composition and the like. Generally wet films of coating compositions of 1 mil (25 micrometers) thick can be exposed in accordance with the present invention to ion beams of 0.5 to 5 megarads in the presence of oxygen to cure in the absence of viscosity throughout their thickness.
[87] "Chemical rays" are light rays having a wavelength of electromagnetic radiation in the ultraviolet ("UV") range, through the visible range, and up to the infrared range. The actinic rays that can be used to cure the coating compositions of the present invention generally have wavelengths of electromagnetic radiation in the range of 150 to 2,000 nanometers (nm), 180 to 1,000 nm, 200 to 500 nm. In one embodiment, ultraviolet light having a wavelength of 10 to 390 nm can be used. Examples of suitable ultraviolet light sources include mercury arcs, carbon arcs, low, medium or high pressure mercury lamps, vortex plasmas, and ultraviolet emitting diodes. Suitable ultraviolet emitting lamps are medium pressure mercury vacuum lamps in the range of 200 to 600 per inch (79 to 237 watts per centimeter) across the length of the lamp. Generally wet films of 1 mil (25 micrometers) thick coating compositions are subjected to wet films by passing them under a four pressure mercury vacuum lamp at a rate of 20 to 1000 feet per minute (6 to 300 meters per minute) according to the present invention. Exposure to 200 to 1000 milli Joules of actinic radiation per square centimeter of can be cured without viscosity over its thickness.
[88] Useful radiation-curable groups that may be present as reactive functional groups on the polysiloxanes include unsaturated groups such as vinyl groups, vinyl ether groups, epoxy groups, maleimide lurups, fumarate groups and combinations of these groups. In one embodiment, the ultraviolet curable group may comprise an acrylic group, maleimide, fumarate, and vinyl ether. Suitable vinyl groups include unsaturated ester groups and vinyl ether groups (disclosed below).
[89] In another embodiment, the invention relates to the aforementioned composition, wherein said one or more reactants are selected from one or more curing agents.
[90] In one embodiment, the present invention relates to any of the compositions described above, wherein at least one polysiloxane comprises at least two reactive functional groups. The at least one polysiloxane may have a reactive group equivalent weight in the range of 50 to 1000 mg per gram of the at least one polysiloxane. In one embodiment, the at least one polysiloxane has a hydroxyl group equivalent weight of 50-1000 mg KOH per gram of said at least one polysiloxane. In another embodiment, the at least one polysiloxane has a hydroxyl group equivalent weight of 100 to 300 mg KOH per gram of the at least one polysiloxane, and in another embodiment, the hydroxyl group equivalent weight ranges from 100 KOH per gram to 500 mg.
[91] In another embodiment, the present invention relates to the aforementioned composition, wherein said at least one R ² group represents a group comprising at least one reactive functional group selected from hydroxyl groups and carbamate groups. In yet another embodiment, the present invention relates to the aforementioned composition, wherein said at least one R ² group represents a group comprising at least two reactive functional groups selected from hydroxyl groups and carbamate groups. In another embodiment, the present invention relates to the aforementioned composition, wherein said at least one R ² group represents a group comprising an oxyalkylene group and at least two hydroxyl groups.
[92] In one embodiment, the present invention relates to the aforementioned composition, wherein at least one polysiloxane has the following formula II or III:
[93]
[94]
[95] Where
[96] m has a value of at least 1;
[97] m 'ranges from 0 to 75;
[98] n ranges from 0 to 75;
[99] Each R may be the same or different and is selected from H, OH, a monovalent hydrocarbon group, and a mixture of any of the above groups;
[100] -R ^a comprises formula IV:
[101] -R ³ -X
[102] Where
[103] -R ³ is selected from alkylene group, oxyalkylene group, alkylene aryl group, alkylene group, oxyalkenylene group and alkenylene aryl group;
[104] X is hydroxyl group, carboxyl group, isocyanate group, protected polyisocyanate group, primary amine group, secondary amine group, amide group, carbamate group, urea group, urethane group, vinyl group, unsaturated ester group, e.g. For example at least one reactive selected from acrylate groups and methacrylate groups, maleimide groups, fumarate groups, onium salt groups such as sulfonium groups and ammonium groups, anhydride groups, hydroxy alkylamide groups and epoxy groups The group containing the functional group is shown.
[105] As used herein, "alkylene" refers to a non-cyclic or cyclic saturated hydrocarbon group having a carbon chain length of C ₂ to C ₂₅ . Non-limiting examples of suitable alkylene groups include those derived from propenyl, 1-butenyl, 1-pentenyl, 1-decenyl and 1-heneisenenyl, for example (CH ₂ ) ₃ , (CH ₂ ) ₄ , (CH ₂ ) ₅ , (CH ₂ ) ₁₀ and (CH ₂ ) ₂₃ as well as isoprene and myrcene.
[106] As used herein, "oxyalkylene" refers to an alkylene group containing one or more oxygen atoms bonded to two carbon atoms and inserted therebetween and having an alkylene carbon chain length of C ₂ to C ₂₅ . Non-limiting examples of suitable oxyalkylene groups include derived from trimethylolpropane monoallyl ether, trimethylolpropane diallyl ether, pentaerythritol monoallyl ether, polyethoxylated allyl alcohol and polypropoxylated allyl alcohol And others such as — (CH ₂ ) ₃ OCH ₂ C (CH ₂ OH) ₂ (CH ₂ CH ₂ —).
[107] As used herein, "alkylene aryl" refers to a non-cyclic alkylene group substituted with one or more aryl groups, for example petyl and having an alkylene carbon chain length of C ₂ to C ₂₅ . The aryl group may be further substituted as the case may be. Non-limiting examples of suitable substituents for the aryl group include hydroxyl groups, benzyl groups, carboxylic acid groups and aliphatic hydrocarbon groups. Non-limiting examples of suitable alkylene aryl groups include those derived from styrene and 3-isopropenyl-VII, VIII-dimethylbenzyl isocyanate, for example-(CH ₂ ) ₂ C ₆ H ₄ -and -CH ₂ CH (CH ₃ ) C ₆ H ₃ (C (CH ₃ ) ₂ (NCO) As used herein, “alkenylene” refers to a ratio having one or more double bonds and an alkylene carbon chain length of C ₂ to C ₂₅ . Non-limiting examples of suitable alkenylene groups include those derived from propargyl alcohol and acetylene diols, for example 2,4,7,9-tetramethyl-5-decine-4, 7-diol (commercially available as SURFYNOL 104 from Air Products and Chemicals, Inc. of Allentown, Pennsylvania).
[108] Formulas (II) and (III) are schematic and parts in parentheses may be used as appropriate, but are not meant to be essential blocks. In some cases the polysiloxane may include various siloxane units. This is even more true when the number of siloxane units used increases, especially when using mixtures of many different siloxane units. If it is desired to use a large number of siloxane units and this forms a block, oligomers can be formed that can combine to form a block compound. By wisely selecting the reactants, compounds with alternating structures or blocks of alternating structures can be used.
[109] In yet another embodiment, the invention relates to any of the compositions described above, wherein the particles are different from the one or more polysiloxanes. In yet another embodiment the invention relates to any of the compositions described above, wherein the particles have an average particle size of less than 100 nanometers prior to being bound to the composition. Methods for measuring the average particle size known to those skilled in the art are described in detail below.
[110] In one embodiment, the present invention relates to the aforementioned composition, wherein substituent R ³ represents an oxyalkylene group. In another embodiment, R ³ represents an oxyalkylene group and X represents a group comprising two or more reactive functional groups.
[111] In another embodiment, the present invention relates to any of the aforementioned compositions comprising one or more polysiloxanes of Formula II or III above, wherein (n + m) is in the range of 2-9. In yet another embodiment, (n + m) in the composition comprising at least one polysiloxane having Formula II or III described above is in the range of 2-3. In another embodiment, (n '+ m') in the composition comprising at least one polysiloxane having Formula II or III described above is in the range of 2-9. In another embodiment, (n '+ m') in the composition comprising at least one polysiloxane having Formula II or III described above is in the range of 2-3.
[112] In one embodiment, the invention relates to any of the aforementioned compositions, wherein X represents a group comprising at least one reactive functional group selected from hydroxyl groups and carbamate groups. In another embodiment, the present invention relates to the aforementioned composition, wherein X represents a group comprising two or more hydroxyl groups. In yet another embodiment, the invention relates to a group wherein X represents a group comprising H, a monohydroxy substituted organic group and at least one group selected from the group of formula (V) wherein at least a portion of X is of formula (V) It relates to any of the above-described compositions that:
[113] R ⁴ -(-CH ₂ -OH) _p
[114] Where
[115] When p is 2 and substituent R ³ represents a C ₁ to C ₄ alkylene group, substituent R ⁴ is , Or
[116] When p is 3, the substituent R ⁴ is Indicates.
[117] In another embodiment, the invention relates to any of the aforementioned compositions, wherein m is 2 and p is 2.
[118] In one embodiment, the invention is formula (II) or formula (II) wherein less than 70% by weight of the partial condensate is a partial condensate of CH ₃ Si (OH) ₃ when no curing agent is present and at least one polysiloxane is a partial condensate of silanol. It relates to any of the compositions described above comprising one or more polysiloxanes having III. The components used in these various embodiments can be selected from the coating components discussed above.
[119] In one embodiment, the present invention provides 0.01 to 90% by weight, based on the total weight of the resin solids of the composition that forms the composition when the one or more polysiloxanes (a) is added to other component (s) of the composition. It relates to the aforementioned composition present in the composition in an amount in the range. In another embodiment, the present invention provides an amount of at least 2% by weight based on the total weight of the resin solids of the composition that forms the composition when the one or more polysiloxanes (a) is added to other component (s) of the composition. To the above-mentioned composition present in said composition. In another embodiment, the present invention provides an amount of at least 5% by weight based on the total weight of the resin solids of the composition that forms the composition when the one or more polysiloxanes (a) is added to other component (s) of the composition. To the above-mentioned composition present in said composition. In yet another embodiment, the invention provides that at least 10% by weight, based on the total weight of the resin solids of the composition, that when the one or more polysiloxanes (a) is added to other component (s) of the composition, forms the composition. The present invention relates to the aforementioned composition, which is present in said composition.
[120] In one embodiment, the present invention provides less than 90% by weight of the at least one polysiloxane (a), based on the total weight of the resin solids of the composition which, when added to the other component (s) of the composition, forms the composition. The present invention relates to the aforementioned composition, which is present in said composition. In another embodiment, the present invention provides less than 80% by weight of the at least one polysiloxane (a), based on the total weight of the resin solids of the composition which, when added to the other component (s) of the composition, forms the composition. The present invention relates to the aforementioned composition, which is present in said composition. In another embodiment, the present invention provides less than 65% by weight of the at least one polysiloxane (a), based on the total weight of the resin solids of the composition which, when added to the other component (s) of the composition, forms the composition. The present invention relates to the aforementioned composition, which is present in said composition. In yet another embodiment, the present invention provides that the at least one polysiloxane (a), when added to other component (s) of the composition, is less than 30 weight percent based on the total weight of the resin solids of the composition that forms the composition. It relates to the above-mentioned composition present in the composition in an amount of.
[121] As used herein, “based on the total weight of resin solids” of the composition refers to the one or more polysiloxanes, any film forming component, and any curing agent, wherein the amount of component added during the preparation of the composition is present during the preparation of the coating composition. And any silyl protected material present (but the particles, any solvents or any added solids, such as hindered amine stabilizers, photoinitiators, pigments such as pigment extenders and fillers, and flow control agents, catalysts, And ultraviolet light absorbers are excluded) based on the total weight of the resin solid (non-volatile).
[122] In another embodiment, the present invention relates to a compound of formula (I) wherein at least one polysiloxane (a) has at least the following reactants: (i) at least one polysiloxane of formula VI; And (ii) hydroxyl groups, carboxyl groups, isocyanate groups, protected polyisocyanate groups, primary amine groups, secondary amine groups, amide groups, carbamate groups, urea groups, urethane groups, vinyl groups, unsaturated ester groups Acrylate groups and methacrylate groups, maleimide groups, fumarate groups, onium salt groups such as sulfonium groups and ammonium groups, anhydride groups, hydroxy alkylamide groups and epoxy groups and hydrosilylation It relates to any of the compositions described above, which is a reaction product of one or more molecules comprising one or more reactive functional groups selected from one or more unsaturated bonds which may undergo a reaction:
[123]
[124] Where
[125] Each substituent R may be the same or different and represents a group selected from H, OH, a monovalent hydrocarbon group, and a mixture of any of the above groups;
[126] At least one of the groups represented by R is H;
[127] n 'is in the range of 0 to 100, and may also be in the range of 0 to 10, more still 0 to 5;
[128] SiH content% of the polysiloxane is in the range of 2 to 50%, and may be in the range of 5 to 25%.
[129] In another embodiment, the one or more functional groups are selected from hydroxy groups.
[130] It is to be understood that the various R groups may be the same or different and in some embodiments the R groups will be wholly monovalent hydrocarbon groups or a mixture of various groups, for example monovalent hydrocarbon groups and hydroxyl groups.
[131] In another embodiment, the reaction product is not gelated. As used herein, "ungelled" refers to a reaction product that is substantially free of crosslinks and has an intrinsic viscosity when dissolved in a suitable solvent, for example as measured according to ASTM-D1795 or ASTM-D4243. The intrinsic viscosity of the reaction product indicates its molecular weight. On the other hand, the gelled reaction product will have an intrinsic viscosity that is too high to measure because it has a very high molecular weight. As used herein, “substantially free of crosslinking” reaction product refers to a reaction product having a weight average molecular weight (Mw) of less than 1,000,000 as measured by gel permeation chromatography.
[132] In addition, it should be appreciated that the level of unsaturation included in reactant (ii) can be selected so that an ungelled reaction product is obtained. In other words, when using silicon hydride containing polysiloxane (i) having higher average Si-H functionality, the reactant (ii) may have a lower level of unsaturation. For example, silicon hydride-containing polysiloxane (i) may be a low molecular weight material when n 'ranges from 0 to 5 and the average Si—H functionality is 2 or less. In this case, the reactant (ii) may contain two or more unsaturated bonds which may undergo a hydrosilylation reaction without the occurrence of gelation.
[133] Non-limiting examples of silicon hydride-containing polysiloxanes (i) include 1,1,3,3-tetramethyl disiloxane where n 'is 0 and the average Si-H functional group is 2; silicon hydride-containing polymethyl polysiloxanes where n 'ranges from 4 to 5 and an average Si-H functional group is approximately 2 (for example, commercially available as MASILWAX BASE® from BASF Corporation).
[134] Materials for use as the reactant (ii) include allyl ethers containing hydroxyl functional groups, such as trimethylolpropane monoallyl ether, pentaerythritol monoallyl ether, trimethylolpropane diallyl ether, polyoxyalkylene alcohols, for example For example polyethoxylated alcohols, polypropoxylated alcohols and polybutoxylated alcohols, undecylene acid-epoxy adducts, allyl glycidyl ether-carboxylic acid adducts and mixtures of any of the above compounds May be included. Also suitable are mixtures of hydroxyl functional polyallyl ethers with hydroxyl functional monoallyl ethers or allyl alcohols. In some cases, reactant (ii) may contain one or more unsaturated bonds at the terminal position. The reaction conditions and proportions of reactants (i) and (ii) are chosen such that the desired functional groups are formed.
[135] The hydroxyl functional group-containing polysiloxane (a) reacts the hydroxyl functional group-containing polysiloxane with an anhydride to promote only the reaction of the anhydride with the hydroxyl functional group and prevents the formation of further esterification under the reaction conditions of the semi-ester acid group. By forming. Non-limiting examples of suitable anhydrides include hexahydrophthalic anhydride, methyl hexahydrophthalic anhydride, phthalic anhydride, trimellitic anhydride, succinic anhydride, chloric anhydride, alkenyl succinic anhydride and substituted alkenyl anhydrides such as jade Tenyl succinic anhydride and mixtures of any of the above compounds.
[136] The semi-ester group containing reaction product prepared as described above may be further reacted with a monoepoxide to form a polysiloxane containing secondary hydroxyl groups. Non-limiting examples of suitable monoepoxides include phenyl glycidyl ether, n-butyl glycidyl ether, cresyl glycidyl ether, isopropyl glycidyl ether, glycidyl versatate, such as shell chemicals CARDURA E, available from Campani, and mixtures of any of the above compounds.
[137] In another embodiment, the present invention relates to the aforementioned composition, wherein said at least one polysiloxane is a carbamate functional group-containing polysiloxane comprising at least the reaction product of the following reactants:
[138] (i) at least one polysiloxane (a) wherein R and n 'contain silicon hydride of formula VI as disclosed for Formula VI above;
[139] (ii) at least one hydroxyl functional group containing material having at least one unsaturated bond capable of undergoing a hydrosilylation reaction as described above; And
[140] (iii) at least one low molecular weight carbamate functional material comprising the reaction product of an alcohol or glycol ether with urea.
[141] Examples of such “low molecular weight carbamate functional materials” include, but are not limited to, alkyl carbamate and hexyl carbamate, and glycol ether carbamate (see US Pat. Nos. 5,922,475 and 5,976,701, incorporated herein by reference). There is).
[142] The carbamate functional group can be bound to the polysiloxane by reacting the hydroxyl functional group-containing polysiloxane with the low molecular weight carbamate functional material through a “transcarbamoylation” process. Low molecular weight carbamate functional materials, which can be derived from alcohols or glycol ethers, are reacted with free hydroxyl groups of polysiloxane polyols, i.e. materials having an average of at least two hydroxyl groups per molecule, to react with carbamate functional polysiloxanes (a) and The original alcohol or glycol ether can be obtained. The reaction conditions and ratios of reactants (i), (ii) and (iii) are chosen to form the desired group.
[143] The low molecular weight carbamate functional material can be prepared by reacting an alcohol or glycol ether with urea in the presence of a catalyst such as butyl tartaric acid. Non-limiting examples of suitable alcohols include low molecular weight aliphatic, cycloaliphatic and aromatic alcohols such as methanol, ethanol, propanol, butanol, cyclohexanol, 2-ethylhexanol and 3-methylbutanol. Non-limiting examples of suitable glycol ethers are ethylene glycol methyl ether and propylene glycol methyl ether. Coupling the carbamate functional group to the polysiloxane can also be accomplished by reacting isocyanic acid with the free hydroxyl group of the polysiloxane.
[144] As mentioned above, the one or more polysiloxanes may comprise one or more other reactive functional groups such as carboxyl groups, isocyanate groups, protected isocyanate groups, carboxylate groups, primary or in addition to or instead of hydroxyl or carbamate functional groups. It may contain secondary amine groups, amide groups, urea groups, urethane groups, epoxy groups and mixtures of any of the foregoing groups.
[145] If at least one polysiloxane (a) contains a carboxyl functional group, the at least one polysiloxane (a) may be prepared by reacting at least one polysiloxane containing a hydroxyl functional group as described above with a polycarboxylic acid or anhydride. Non-limiting examples of suitable polycarboxylic acids for use include adipic acid, succinic acid and dodecanedioic acid. Non-limiting examples of suitable anhydrides include those described above. The reaction conditions and ratios of the reactants are selected to form the desired functional group.
[146] Where at least one polysiloxane (a) contains at least one isocyanate functional group, the at least one polysiloxane (a) may be prepared by reacting at least one polysiloxane containing hydroxyl functional groups as described above with a polyisocyanate, for example diisocyanate. Can be. Non-limiting examples of suitable polyisocyanates include aliphatic polyisocyanates such as aliphatic diisocyanates such as 1,4-tetramethylene diisocyanate and 1,6-hexamethylene diisocyanate; Alicyclic polyisocyanates such as 1,4-cyclohexyl diisocyanate, isophorone diisocyanate and α, α-xylylene diisocyanate; And aromatic polyisocyanates such as 4,4'-diphenylmethane diisocyanate, 1,3-phenylene diisocyanate and tolylene diisocyanate. These and other suitable polyisocyanates are disclosed in more detail in column 5, line 26 to column 6, line 28 of US Pat. No. 4,046,729, which is incorporated herein by reference. The reaction conditions and ratios of the reactants are selected to form the desired functional groups.
[147] Substituent X of Formula IV may comprise a polymeric urethane or urea containing material or a mixture of any of these materials, terminated with an isocyanate, hydroxyl, primary or secondary amine functional group or any mixture of these materials. When the substituent X comprises such functional groups, the at least one polysiloxane (a) is a molecule selected from at least one of the polysiloxane polyols, at least one polyisocyanate and optionally hydroxyl groups, primary amine groups and secondary amine groups described above. It may be a reaction product of one or more compounds having two or more hydrogen atoms per sugar.
[148] Non-limiting examples of suitable polyisocyanates include those described above. Non-limiting examples of compounds having two or more active hydrogen atoms per molecule include polyols and polyamines containing primary or secondary amine groups.
[149] Non-limiting examples of suitable polyols include polyalkylene ether polyols such as thio ethers; Polyester polyols such as polyhydroxy polyesteramides; And hydroxyl containing polycaprolactone and hydroxy containing acrylic copolymers. Various polyols, for example glycols, for example ethylene glycol, 1,6-hexanediol, bisphenol A and the like, or higher polyols, for example polyether polyols formed from oxyalkylation such as trimethylolpropane, pentaerythritol This is also useful. Polyester polyols may also be used. US Pat. No. 4,046,729, column 7, line 52 to column 8, line 9, wherein these and other suitable polyols are incorporated herein by reference; Column 8, line 29 to column 9, line 66; And US Pat. No. 3,919,315, column 2, line 64 to column 3, line 33.
[150] Non-limiting examples of suitable polyamines are primary or secondary diamines wherein the groups bonded to the nitrogen atom can be saturated or unsaturated, aliphatic, cycloaliphatic, aromatic, aromatic-substituted aliphatic, aliphatic-substituted aromatic and heterocyclic. Or polyamines. Typical suitable aliphatic and cycloaliphatic diamines include 1,2-ethylene diamine, 1,2-propylene diamine, 1,8-octane diamine, isophorone diamine, propane-2,2-cyclohexyl amine and the like. Suitable aromatic diamines are phenylene diamine and toluene diamines such as o-phenylene diamine and p-tolylene diamine. These and other suitable polyamines are disclosed in detail in column 6, line 61 to column 7, line 26 of US Pat. No. 4,046,729, which is incorporated herein by reference.
[151] In one embodiment substituent X of formula IV may comprise a polymeric ester containing group terminated with a hydroxyl or carboxylic acid functional group. When X is such a group, the at least one polysiloxane (a) may be the reaction product of at least one polysiloxane polyol, at least one substance comprising at least one carboxylic acid function, and at least one organic polyol as described above. Non-limiting suitable examples of materials comprising at least one carboxylic acid functional group include carboxylic acid group containing polymers well known in the art, such as carboxylic acid group containing acrylic polymers, polyester polymers and polyurethane polymers, for example US Pat. No. 4,681,811 Non-limiting examples of suitable organic polyols include those described above.
[152] To prepare one or more polysiloxanes (a) containing epoxy groups, one or more polysiloxanes containing hydroxyl functional groups as described above may be further reacted with the polyepoxide. The polyepoxide may be an aliphatic or cycloaliphatic polyepoxide or a mixture of any of the above compounds. Non-limiting examples of suitable polyepoxides for use include one or more ethylenically unsaturated monomers including one or more epoxy groups, such as glycidyl (meth) acrylate and allyl glycidyl ether, and epoxy functional groups. There is an epoxy functional acrylic copolymer made from one or more ethylenically unsaturated monomers. Such methods of making epoxy functional acrylic copolymers are disclosed in detail in column 4, line 52 to column 5, line 50 of US Pat. No. 4,681,811, which is incorporated herein by reference. The reaction conditions and ratios of the reactants are selected to form the desired functional groups.
[153] In one embodiment, the present invention relates to the aforementioned composition, wherein said composition contains a plurality of particles. In another embodiment, the present invention relates to the aforementioned composition, wherein said particles have an average particle size of less than 50 microns before they are bonded to said composition. In another embodiment the present invention relates to the aforementioned composition, wherein said particles have an average particle size in the range of 1 to less than 1000 nanometers before they are bonded to said composition. In another embodiment, the present invention relates to the aforementioned composition, wherein said particles have an average particle size in the range of 1 to less than 100 nanometers prior to bonding to said composition.
[154] In another embodiment, the present invention relates to the aforementioned composition, wherein said particles have an average particle size in the range of 5-50 nanometers before said particles are bonded to said composition. In another embodiment, the present invention relates to the aforementioned composition, wherein said particles have an average particle size in the range of 5-25 nanometers before said particles are bonded to said composition. The particle size can range between any combination of the above values, including the recited values.
[155] In embodiments in which the average particle size of the particles is at least 1 micron, the average particle size can be measured by known laser scattering techniques. For example, the average particle size of the particles is measured using a Horiba model LA 900 laser diffraction particle size instrument (the instrument uses a helium-neon laser of 633 nm wavelength to measure the particle size and the particles are spherical). Ie, the “particle size” refers to the smallest sphere that can completely contain the particle).
[156] In embodiments in which the particle size of the present invention is at least 1 micron, the average particle size is visually examined by electron micrographs on a transmission electron microscope ("TEM"), by measuring the diameter of the particles on the phase, and It can be measured by calculating the average particle size based on the magnification on the TEM. Those skilled in the art will understand how to prepare the TEM phase, which method is described in the Examples below. In a non-limiting embodiment of the invention, a TEM image of 105,000 × magnification is made, and the conversion factor is obtained by dividing the magnification by 1000. Through visual inspection, the diameter of the particles is measured in millimeters and the measured values are converted in nanometers by the conversion factor. The diameter of the particle refers to the diameter of the smallest sphere that can completely contain the particle.
[157] The shape (or form) of the particles can vary depending on the specific embodiment of the present invention and its intended application. As well as square, plate-shaped, or acicular (extended or fibrous) particles, for example, generally spherical forms (eg solid beads, micro beads, hollow spheres) can also be used. In addition, the particles can have an internal structure in the form of hollow, porous, nonporous, or any combination of the above forms, for example hollow centers with porous or solid walls. For more information on suitable particle characteristics, see H. Katz et al. (Ed.), Pages 9-10 in Handbook of Fillers and Plastics (1987).
[158] It will be appreciated by those skilled in the art that a mixture of one or more particles of different average particle sizes may be incorporated into the composition in accordance with the present invention to give the composition the desired properties and characteristics. For example, particles of various sizes can be used in the composition according to the present invention.
[159] The particles may be formed from materials selected from polymeric inorganic and non-polymeric inorganics, polymeric organic and non-polymeric organics, composites, and mixtures of any of the foregoing materials. The term "polymeric inorganic" as used herein means a polymeric material having a backbone repeat unit based on an element or elements other than carbon. More information is provided on page 5 of James Mark et al., Inorganic Polymers, Prentice Hall Polymer Science and Engineering Series, (1992), which is incorporated herein by reference. As used herein, the term "polymeric organic" refers to synthetic polymeric materials, semisynthetic polymeric materials, natural polymeric materials, all of which have backbone repeating units based on carbon.
[160] As used herein, the term "organic" refers to a carbon containing compound, where the carbon is typically bound to carbon itself, hydrogen, often other elements, and to biatomic compounds such as carbon dioxide, carbides, carbon disulfide, etc. ; Tertiary compounds such as metallic cyanide, metallic carbonyl, phosphine, carbonyl sulfide and the like; And carbon-containing ionic compounds such as calcium carbonate, metallic carbonates such as sodium carbonate and the like. See R. Lewis, Sr., Hawley's Condensed Chemical Dictionary, (12th Ed. 1993), pages 761-762, and M. Silberberg, Chemistry The Molecular Nature of Matter and Change (1996), page 586, which is incorporated herein by reference. Can be.
[161] As used herein, the term "inorganic" means any substance that is not organic.
[162] The term "composite material" as used herein refers to a combination of two or more different materials. Particles formed from the composite material generally have a surface hardness different from the hardness inside the particles. More specifically, the surface of the particles can be any method well known in the art, including but not limited to methods of chemically or physically changing the surface properties of the particles using techniques known in the art. Can be modified by
[163] For example, the particles can be formed from one or more primary materials coated, clad or encapsulated with one or more secondary materials to form composite particles having a smoother surface. In yet another optional embodiment, the particles formed from the composite material may be formed from a primary material that is coated, clad, or encapsulated with another type of the primary material. For more information on particles useful in the present invention, see G. Wypych, Handbook of Fillers, 2nd Ed. (1999) pages 15-202.
[164] Particles suitable for use in the compositions of the present invention may include inorganic elements or compounds known in the art. Suitable particles may be formed from ceramic materials, metallic materials, mixtures of any of the above materials. Suitable ceramic materials include metal oxides, metal nitrides, metal carbides, metal sulfides, metal silicates, metal borides, metal carbonates, and mixtures of any of the foregoing materials. Specific non-limiting examples of nitrogenous metals are, for example, boron nitride; Specific non-limiting examples of metal oxides are, for example, zinc oxide; Specific non-limiting examples of metal sulfides are, for example, molybdenum disulfide, tantalum disulfide, tungsten disulfide, and zinc sulfide; Specific non-limiting examples of metal silicates are, for example, aluminum silicate and magnesium silicate and for example vermiculite.
[165] The particles are for example essentially the center of one inorganic oxide, for example colloidal, fumed or amorphous silica, alumina or colloidal alumina, titanium dioxide, cesium oxide, yttrium oxide, colloidal yttrium, zirconia For example colloidal or amorphous zirconia, and mixtures of any of the above compounds; Or one type of inorganic oxide in which another type of organic oxide is deposited on the surface. Of course, when the composition of the present invention is used as a transparent coating film, for example on a transparent top coat, for example a multicomponent composite coating composition, it is of course that the particles should not significantly interfere with the optical properties of the composition. The term "transparent" as used herein means that the cured coating has a BYK Haze index of less than 50 as measured by BYK / Haze Gloss instrument.
[166] Non-polymeric, inorganic materials useful for forming the particles of the present invention include inorganic materials selected from graphite, metals, oxides, carbides, nitrides, borides, sulfides, silicates, carbonates, sulfur oxides, and hydroxides. This includes. A non-limiting example of a useful inorganic oxide is zinc oxide. Non-limiting examples of suitable inorganic sulfides include molybdenum disulfide, tantalum disulfide, tungsten disulfide, zinc sulfide. Non-limiting examples of useful inorganic silicon oxides include aluminum silicate and magnesium silicate, such as vermiculite. Non-limiting examples of suitable metals include molybdenum, platinum, palladium, nickel, aluminum, copper, gold, iron, silver, alloys, and mixtures of any of the above metals.
[167] In one embodiment, the present invention provides the particles of fumed silica, amorphous silica, colloidal silica, alumina, colloidal alumina, titanium dioxide, cesium oxide, yttrium oxide, colloidal yttrium, zirconia, colloidal zirconia, and any of the above compounds. It relates to the above-mentioned composition which may be selected in a mixture. In another embodiment, the present invention relates to the aforementioned composition, wherein said particles comprise colloidal silica. In one embodiment, these materials may be surface treated, which surface treatment produces particles that are substantially inactive with one or more reactive functional groups of one or more polysiloxanes and one or more functional groups of one or more reactants.
[168] The composition may comprise a precursor suitable for forming silica particles in situ by a sol-gel process. The composition may comprise an alkoxy silane which can be hydrolyzed according to the invention to form silica particles in situ. Other useful particles include surface modified silicas disclosed in US Pat. Nos. 5,853,809 6 columns, 51 to 8 columns, 43 lines, incorporated herein by reference.
[169] In one embodiment of the present invention, the particles have a hardness value that is greater than the hardness value of the material that may wear the polymeric coating or polymeric substrate. Examples of materials that may wear the polymeric coating or polymeric substrate may include, but are not limited to, dust, sand, rock, glass, car wash brushes, and the like. Hardness values of the particles and materials that may wear the polymeric coating or polymeric substrate may be determined by conventional hardness measurement methods, such as Vickers or Brinell hardness, but also provide a measure of the relative scratch resistance of the surface to zero. It can also be determined by the Mohs hardness indicated on the scale of 10 to 10. Mohs' hardness values of some non-limiting examples of particles formed from inorganic materials suitable for use in the present invention are set forth in Table A below.
[170]
[171] In one embodiment, the Mohs' Hardness value of the particles is greater than five. In another embodiment, the Mohs' Hardness value of the particles, such as silica, is greater than six.
[172] As disclosed above, the Mohs hardness scale is related to the scratch resistance of the material. Therefore, the present invention further contemplates particles having a surface hardness different from the hardness inside the particles under the particle surface. More specifically, and as disclosed above, the surface of the particles may chemically repair the surface of the particles using any method well known in the art, including but not limited to techniques known in the art. By varying the surface hardness of the particles to be greater than the hardness of the material that may wear the polymeric coating or polymeric substrate, while the hardness below the surface of the particles may cause wear of the polymeric coating or polymeric substrate. It can be modified to be smaller than the hardness of the material which can be.
[173] As in another alternative embodiment, the particles may be formed from a primary material coated and clad with one or more secondary materials and encapsulated to form a composite material having a harder surface. Optionally, the particles can be formed from the primary material coated, clad, and encapsulated with the primary material in other forms to form a composite material having a harder surface.
[174] In one embodiment, and not limited to the present invention, inorganic particles formed from inorganic materials such as silicon carbide or aluminum nitriding are provided with silica, carbonate or nanoclay coatings to form useful composite particles. . In another non-limiting embodiment, silane coupling agents with alkyl side chains can interact with the surface of inorganic particles formed from inorganic oxides to provide useful composite particles having a "softer" surface. Other embodiments include cladding, encapsulated or coated particles formed from non-polymeric or polymeric materials and other non-polymeric or polymeric materials. A specific non-limiting example of such composite particles is DUALITE®, which is a synthetic polymeric material coated with calcium carbonate commercially available from Pierce and Stevenson Corporation, Buffalo, New York.
[175] In one non-limiting embodiment of the invention, the particles are formed from a solid lubricating material. As used herein, the term "solid lubrication" refers to any solid used between two surfaces to prevent damage during relative movement or to reduce friction and wear. In one embodiment, the solid lubricant is an inorganic solid lubricant. As used herein, the term "inorganic solid lubricant" means that the solid lubricant has a characteristic crystallization tendency that causes it to shear deformation between thin and flat plates, thereby slipping easily and reducing friction. do. See R. Lewis, Sr., Hawley's Condensed Chemical Dictionary, (12th Ed. 1993), page 712, which is incorporated herein by reference. Friction is resistance to sliding one over the other. See page 1 of F. Clauss, Solid Lubricants and Self-Lubricating Solids (1972), which is incorporated herein by reference.
[176] In one non-limiting embodiment of the invention, the particles have a lamellar structure. Particles with lamellar structures consist of thin or plate-like atoms arranged in a hexagonal system, where strong bonds exist within the thin plates and weak van der Waals bonds between the thin plates, resulting in low shear stresses between the thin plates. Non-limiting examples of lamellar structures are hexagonal crystal structures. Inorganic solid particles having a lamellar fullerene (ie buckyball) structure are also useful in the present invention.
[177] Non-limiting examples of suitable materials having a lamellar structure useful for forming the particles of the present invention include boron nitride, graphite, dichalcogenide metals, mica, talc, gypsum, kaolinite, calcite, cadmium iodide, silver sulfide, and Mixtures of any of the above compounds are included. Suitable dischalcogenide metals include molybdenum disulfide, molybdenum diselenide, tantalum dioxide, tantalum disulfide, tungsten dihydrate, tungsten disulfide, and mixtures of any of the above compounds. .
[178] The particles can be formed from nonpolymeric, organic materials. Non-limiting examples of non-polymeric, organic materials useful in the present invention include stearates (such as zinc styrates and aluminum styrates), diamonds, carbon blacks, stearamides.
[179] The particles are formed from an inorganic polymeric material. Non-limiting examples of useful inorganic polymeric materials include polyphosphazines, polysilanes, polysiloxanes, polyjeremanns, polymeric sulfur, polymeric selenium, silicone, and mixtures of any of the foregoing compounds. A specific non-limiting example of particles formed from inorganic polymeric materials suitable for use in the present invention is TOSPEARL (RJ Perry "Applications for Cross-Linked Siloxane Particles" Chemtech, February 1999 pages 39-44), which is crosslinked Particles formed from siloxanes, which are commercially available from ToshibaSilicones Company, Ltd, Japan.
[180] The particles can be formed from synthetic, organic polymeric materials. Non-limiting examples of suitable organic polymeric materials include thermosets and thermoplastics. As used herein, "thermoplastic" material means a material that softens when exposed to heat and returns to its original state when cooled to room temperature. Non-limiting examples of suitable thermoplastics include thermoplastic polyesters such as polyethylene terephthalate, polybutylene terephthalate, and polyethylene naphthalate, polycarbonates, polyolefins such as polyethylene, polypropylene, polyisobutene, acrylic polymers, Copolymers of styrene and acrylic acid monomers, and polymers including methacrylates, polyamides, thermoplastic polyurethanes, vinyl group polymers, and mixtures of any of the foregoing polymers.
[181] Non-limiting examples of suitable thermoset materials include thermoset polyesters, vinyl esters, epoxy materials, phenolic, aminoplasts, thermoset polyurethanes, and mixtures of any of the foregoing polymers. Specific, non-limiting examples of synthetic polymerizable particles formed from epoxy materials are epoxy microgel particles. As used herein, a "thermoset" material is a material that is irreversibly solidified or "hardened" upon heating. The thermoset material forms a crosslinked network. As used herein, if the polymeric material at least partially formed a polymeric network, the polymeric material was "crosslinked." One skilled in the art can determine the presence and extent of crosslinking, ie crosslink density, by various methods such as dynamic thermal analysis (DMTA) using a TA device DMA 2980 DMTA analyzer performed under nitrogen. Will understand. The method measures the glass transition temperature and the crosslink density of the glass film of the coating or polymer. The physical properties of the cured material are related to the structure of the crosslinked network.
[182] The particles can also be hollow particles formed from materials selected from polymeric and non-polymeric inorganic materials, polymeric and non-polymeric organic materials, composite materials, and mixtures of any of the above materials. Non-limiting examples of suitable materials for forming hollow particles have been disclosed above.
[183] In one embodiment, the present invention provides the particles in the composition in an amount ranging from 0.01 to 75% by weight, based on the total weight of the resin solid of the component that forms the composition when added to other components of the composition. It relates to the composition described above. In another embodiment, the present invention relates to the aforementioned, wherein the particles are present in the composition in an amount of at least 0.1% by weight, based on the total weight of the resin solid of the component that forms the composition, when added to other components of the composition. It relates to a composition. In another embodiment, the invention described above wherein the particles are present in the composition in an amount of at least 0.5% by weight based on the total weight of the resin solids of the components that form the composition when added to other components of the composition. It relates to a composition. In another embodiment, the invention described above wherein the particles are present in the composition in an amount of at least 5% by weight, based on the total weight of the resin solids of the components that form the composition, when added to other components of the composition. To a composition.
[184] In yet another embodiment, the invention relates to the invention, wherein the particles are present in the composition in an amount of less than 75% by weight, based on the total weight of the resin solid of the component that forms said composition, when added to another component of said composition. It relates to the composition described above. In a further embodiment, the invention relates to the above, wherein the particles are present in the composition in an amount of less than 50% by weight, based on the total weight of the resin solids of the components that form the composition, when added to other components of the composition. It relates to one composition. In another embodiment, the invention relates to the above, wherein the particles are present in the composition in an amount of less than 20% by weight based on the total weight of the resin solids of the components that form the composition when added to other components of the composition. It relates to one composition. In another embodiment, the invention relates to the above, wherein the particles are present in the composition in an amount of less than 10% by weight, based on the total weight of the resin solid of the component that forms the composition, when added to another component of the composition. It relates to one composition. The amount of particles can be present between any combination of the above values, including the values recited above.
[185] Prior to bonding, one class of particles that can be used in accordance with the present invention includes sol, for example organosol, of such particles. Such sol may be a variety of small particles, colloidal silica having an average particle size in the above range.
[186] Colloidal silica can be surface modified during or after the particles are initially formed, and the resulting particles are substantially free of one or more functional groups of the one or more polysiloxanes and one or more functional groups of the one or more reactants. Such surface-modified silicas are not only carbon-containing moieties chemically bonded to the surface, but also anhydrous SiO ₂ groups and SiOH groups, (surface of the silica, absorbed organic groups, or any Groups, such as various ionic groups, physically linked or chemically bonded to the above combinations. Such surface modified silicas are disclosed in detail in US Pat. No. 4,680,204, incorporated herein by reference.
[187] Such materials may be prepared by various techniques in various forms, and non-limiting examples include organosols and mixed sols. As used herein, "mixed sol" is intended to include a dispersion of colloidal silica in which the organic solution and water are included in the dispersion. The small particle colloidal silica can be obtained readily, is essentially colorless, and must have a refractive index so that it can be included in the composition without adding pigments or ingredients obvious to those skilled in the art in order to color the composition or reduce transparency. Where the composition results in a colorless transparent coating.
[188] Suitable non-limiting examples of particles include colloidal silica, for example under the trademark ORGANOSILICASOLS® in Nissan Chemical Company, for example ORGANNOSILICASOL® MT-ST, and in Clariant Corporation as HIGHLIN®. Commercially available ones; Colloidal alumina, such as those commercially available under the trademark NALCO 8676® from Nalco Chemical; And colloidal zirconia, such as those commercially available under the trademark HIT-32M® from Nissan Chemical Company.
[189] The particles can be bound to the compositions of the present invention in the form of stable dispersions. When the particles are in colloidal form, the dispersion can be prepared by dispersing the particles in a carrier under stirring, and the solvent present can be removed under vacuum at room temperature. In another embodiment, the carrier may be a material other than a solvent, such as the surface active agents disclosed below, wherein the surface active agent is a non-limiting polysiloxane including, but not limited to, reactive functional groups comprising one or more polysiloxanes (a) It includes.
[190] Alternatively, the dispersion may be prepared as disclosed in US Pat. No. 4,522,958 or 4,526,910, which is incorporated herein by reference. The particles may be “cool-mixed” with one or more polysiloxanes (a) before they are bonded to the inventive composition. Optionally, the particles can be post-added to any mixture of residual composition components (including but not limited to one or more polysiloxanes (a)) and dispersed therein using dispersion techniques well known in the art. have.
[191] If the particles are in other colloidal forms, for example, but not limited to agglomerated forms, the dispersion may disperse the agglomerates in the carrier, for example, but not limited to one or more polysiloxanes (a) to stably disperse the particles. have. Dispersion Techniques For example, grinding, milling, microfluidizing, ultrasound, or any other pigment dispersion techniques well known in the art of coating formulations can be used. Optionally, the particles can be dispersed by any other dispersion technique known in the art. If desired, particles in a form other than the colloid can be post-added to a mixture of other composition components and dispersed using dispersion techniques known in the art.
[192] According to the invention the particles applied to a polymeric substrate or polymeric coating, for example, but not limited to, the electrodeposited coating, the primer coating, or the top coat can be present in dispersions, suspensions, emulsions in the carrier. . Non-limiting examples of suitable carriers include water, solvents, surfactants, or mixtures of any of the foregoing materials. Non-limiting examples of suitable solvents include natural oils, alcohols such as methanol or butanol, ketones such as methyl amyl ketone, aromatic hydrocarbons such as xylene, glycol ethers such as ethylene glycol monobutyl ether, esters, Aliphatic substances, and mixtures of any of the above compounds.
[193] As disclosed above, in addition to the one or more polysiloxanes (a), the composition of the present invention may be one or more reactive with one or more functional groups selected from one or more reactive functional groups of the one or more polysiloxanes and one or more functional groups of one or more reactants It may be formed from one or more reactants containing functional groups. In one embodiment, the one or more reactants may be selected from one or more curing agents.
[194] In a further embodiment, the present invention relates to the aforementioned composition, wherein a curing agent is present. This curing agent may be selected from aminoplast resins, polyisocyanates, protected polyisocyanate compounds, polyepoxides, polyacids, polyols, and mixtures of any of the foregoing compounds.
[195] In another embodiment, the present invention relates to the aforementioned composition, wherein said curing agent is aminoplast. As curing agents for hydroxyl, carboxylic acid and carbamate functional group containing materials, aminoplast resins, including phenoplasts, are well known in the art. Suitable aminoplasts, such as those discussed above, are known to those skilled in the art. The aminoplast can be obtained from the condensation reaction of formaldehyde with amine E. Non-limiting examples of amines or amides are melamine, urea or benzoguanamine. Condensates with other amines or amides may be used; For example, an aldehyde condensate of glycoluril may be used that provides a high melt crystalline product useful for powder coatings. Formaldehyde is the most frequently used aldehyde, but other aldehydes such as acetaldehyde, crotonaldehyde and benzaldehyde can also be used.
[196] The aminoplast contains imino and methylol groups, and in some cases at least some of the methylol groups are etherified with alcohols to modify the curing reaction. Any monohydric alcohol such as methanol, ethanol, n-butyl alcohol, isobutanol and hexanol can be used for this purpose.
[197] Non-limiting examples of aminoplasts are melamine-, urea- or benzoguanamine-formaldehyde condensates, which in some cases are monomeric and at least partially etherified with one or more alcohols having 1 to 4 carbon atoms. Non-limiting examples of suitable aminoplast resins include the tradename CYMEL® from Cytec Industries, Inc., and the tradename RESIMENE® from Solutic, Inc. Commercially available under registered trademarks).
[198] In another embodiment, the present invention provides an amount in the range of from 1 to 65% by weight, based on the total weight of the resin solid which forms the composition, including the values recited above, when the curing agent is added to other components of the composition. It relates to the above-mentioned composition present as.
[199] Other curing agents suitable for use include, but are not limited to, polyisocyanate curing agents. The term "polyisocyanate" as used herein is intended to include protected (or capped) polyisocyanates as well as unprotected polyisocyanates. Although higher polyisocyanates such as isocyanates of diisocyanates are often used, diisocyanates can be used. Higher polyisocyanates may also be used with diisocyanates. Isocyanate prepolymers can also be used, for example reaction products of polyisocyanates with polyols. Mixtures of polyisocyanate curing agents can also be used.
[200] If the polyisocyanate is protected or capped, any suitable aliphatic, cycloaliphatic or aromatic monoalcohol known to those skilled in the art can be used as the capping agent for the polyisocyanate. Other suitable capping agents are oximes and lactams. In use, the polyisocyanate curing agent is present in an amount ranging from 5 to 65 weight percent, based on the total weight of the resin solids of the components that form the composition, when added to the other components in the composition, 10 to 45 weight It may be present in an amount ranging from%, often in an amount ranging from 15 to 40% by weight.
[201] Other useful curing agents include protected polyisocyanate compounds, for example tricarbamoyl triazine compounds disclosed in detail in US Pat. No. 5,084,541, which is incorporated herein by reference. The protected polyisocyanate curing agent, when used, is present in an amount in the range of 20% by weight or less based on the total weight of the resin solid of the component that forms the composition when added to other components in the composition, and in the range of 1-20% by weight. May be present in amounts.
[202] Anhydrides as curing agents for hydroxyl functional groups containing materials are also well known in the art and can be used in the present invention. Non-limiting examples of anhydrides suitable for use as curing agents in the compositions of the present invention include those derived from mixtures of ethylenically unsaturated carboxylic anhydrides and monomers comprising one or more vinyl co monomers such as styrene, alpha methyl styrene, vinyl toluene and the like. And those having two or more carboxylic anhydride groups per molecule. Non-limiting examples of suitable ethylenically unsaturated carboxylic anhydrides are maleic anhydride, citraconic anhydride and itaconic anhydride. On the one hand, the anhydride may be an anhydride adduct of a diene polymer, for example maleated polybutadiene or a maleated copolymer of butadiene, for example butadiene / styrene copolymer. Column 10, lines 16-50 of US Pat. No. 4,798,746, to which these and other suitable anhydride curing agents are incorporated by reference; And column 3, lines 41 to 57 of US Pat. No. 4,732,790.
[203] Polyepoxides as curing agents for carboxylic acid functional groups containing materials are well known in the art. Non-limiting examples of suitable polyepoxides for use in the compositions of the present invention include polyglycidyl ethers of polyhydric phenols and aliphatic alcohols (e.g. epihalohiches such as epichlorohydrin in the presence of alkalis). Which can be prepared by etherification with drone). These and other suitable polyepoxides are disclosed in US Pat. No. 4,681,811, column 5, lines 33-58, which is incorporated herein by reference.
[204] Curing agents suitable for epoxy functional group containing materials include polyacid curing agents, for example ethylenically unsaturated monomers containing one or more carboxylic acid groups, and acid group-containing acrylic polymers prepared from one or more ethylenically unsaturated monomers without carboxylic acid groups. Such acid functional acrylic polymers may have an acid value in the range of 30 to 150. Acid functional group containing polyesters can also be used. The polyacid curing agents described above are disclosed in more detail in column 6, line 45 to column 9, line 54 of US Pat. No. 4,681,811, which is incorporated herein by reference.
[205] Also well known in the art as hardeners for isocyanate functional groups containing materials are polyols, ie materials having two or more hydroxyl groups per molecule. Non-limiting examples of such materials suitable for use in the compositions of the present invention include polyalkylene ether polyols such as thio ethers; Polyester polyols such as polyhydroxy polyesteramides; And hydroxyl containing polycaprolactone and hydroxy containing acrylic interpolymers. Also useful are polyether polyols formed from the oxyalkylation of various polyols, for example glycols, for example ethylene glycol, 1,6-hexanediol, bisphenol A and the like or higher polyols such as trimethylolpropane, pentaeryth Retort and the like. Polyester polyols may also be used. Column 7, lines 52 to 8, line 9 of US Pat. No. 4,046,729, to which such and other suitable polyol curing agents are incorporated by reference; Column 8, line 29 to column 9, line 66; And column 2, line 64 to column 3, line 33 of US Pat. No. 3,919,315.
[206] Polyamines can also be used as curing agents for isocyanate functional groups containing materials. Non-limiting examples of suitable polyamine curing agents are primary or secondary diamines wherein the radicals bonded to the nitrogen atom may be saturated or unsaturated, aliphatic, alicyclic, aromatic, aromatic-substituted aliphatic, aliphatic-substituted aromatic and heterocyclic. Or polyamines. Non-limiting examples of suitable aliphatic and cycloaliphatic diamines include 1,2-ethylene diamine, 1,2-porphylene diamine, 1,8-octane diamine, isophorone diamine, propane-2,2-cyclohexyl amine, and the like. do. Non-limiting examples of suitable aromatic diamines are phenylene diamines and toluene diamines such as o-phenylene diamine and p-tolylene diamine. These and other suitable polyamines are disclosed in detail in column 6, line 61 to column 7, line 26, of US Pat. No. 4,046,729, which is incorporated herein by reference.
[207] If desired, suitable mixtures of curing agents may be used. It should be mentioned that the composition may be formulated as a one-component composition that mixes a curing agent, such as an aminoplast resin or a protected isocyanate compound, such as those described above, with other composition components. The one-component composition may be storage stable upon compounding. On the other hand, the composition may be added to a pre-formed mixture of other composition components just prior to application, such as a polyisocyanate curing agent, such as those described above. It can mix | blend as a component composition. The preformed mixture may comprise a curing agent such as an aminoplast resin or a protected isocyanate compound such as those described above.
[208] In another embodiment where the coating material is cured by actinic radiation or a combination of actinic radiation and thermal energy, the components forming the coating composition are one or more photoinitiators or photosensitizers that provide free radicals or cations to initiate the polymerization process. It may further comprise a curing agent. Useful photoinitiators have absorbances in the range from 150 to 2,000 nm. Non-limiting examples of useful photoinitiators include benzoin, benzophenone, hydroxy benzophenone, anthraquinone, thioxanthone, substituted benzoin, for example the butyl isomer of benzoin ether, α, α-diethoxyacetophenone, α, α-dimethoxy-α-phenylacetophenone, 2-hydroxy-2-methyl-1-phenyl propane 1-one and 2,4,6-trimethyl benzoyl diphenyl phosphine oxide.
[209] In another embodiment, the reactant may comprise one or more materials with one or more reactive functional groups protected by silyl groups. The silyl-protected material is different from the polysiloxane (a) discussed above. Hydrolysis of the silyl group regenerates reactive functional groups on the material that can be used for further reaction with the curing agent.
[210] In one embodiment, the silyl protected group has the formula (IX):
[211]
[212] Where
[213] Each R ₁ , R ₂ , and R ₃ may be the same or different and represent an alkyl group, a phenyl group, or an allyl group having 1 to 18 carbon atoms.
[214] Non-limiting examples of suitable functional groups that can be protected with such silyl groups include hydroxyl groups, carbamate groups, carboxyl groups, amide groups, and mixtures thereof. In one embodiment, the functional group is a hydroxyl group.
[215] Suitable non-limiting examples that can react with the functional groups to form the silyl groups include hexamethyldisilazine, trimethylchlorosilazine, trimethylsilyldiethylamine, t-butyl dimethylsilyl chloride, diphenyl methylsilyl chloride, hexa Methyl disilyl azide, hexamethyl disiloxane, trimethylsilyl triflate, hexamethyldissilyl acetamide, N, N'-bis [trimethylsilyl] -urea, and mixtures of any of the above compounds. In one embodiment hexamethyldisilazane is used to form the silyl group.
[216] Further examples of suitable compounds for the silylation reaction, and suitable reaction conditions and reagents for the trimethylsilylation reaction, are described in Example 28 below and herein incorporated by reference. Greene et al., Protective Groups in Organic Synthesis, (2d. Ed. 1991), pages 68-86, 261-263.
[217] The backbone of the material is at least one bond-containing compound or polymer selected from ester bonds, urethane bonds, urea bonds, siloxane bonds, amide bonds and ether bonds such as polyesters, acrylic polymers, polyurethanes, polyethers, polyureas, poly Copolymers of amides and any of the above compounds.
[218] Suitable compounds or polymers having at least one ester bond and at least one reactive functional group include semiesters formed by reacting at least one polyol with at least one anhydride. The semiesters are suitable because they have a relatively low molecular weight and are very reactive with epoxy groups.
[219] The semiester can be obtained by reacting the polyol and 1,2-anhydride under sufficient conditions in which the ring-opening reaction of the anhydride occurs and forms the semiester, but does not sufficiently occur in the polyesterification reaction. By "sufficiently esterification reaction" is meant that the carboxyl groups formed from the reaction of the martial arts are not esterified by the polyol in a further circulating manner. This generally means that a high molecular weight polyester of less than 10, typically less than 5% by weight is formed.
[220] The 1,2-anhydrides and polyols are generally mixed with one another and the reaction is carried out in an inert environment, for example in the presence of nitrogen and a solvent such as a ketone or an aromatic hydrocarbon to dissolve the solid component and / or the reaction mixture To lower the viscosity.
[221] 1,2-dicarboxylic acid anhydride is used for the desired ring opening reaction and semiester formation. The reaction of polyols with carboxylic acids instead of anhydrides requires esterification by condensation and removal reactions, and water must be removed by distillation. Under these conditions, it promotes undesired polyesterization. In addition, the reaction temperature is generally low temperature, i.e., less than 135 ℃, may be in the range of 70 to 135 ℃. The reaction time may vary slightly depending on the reaction temperature and is generally in the range of 10 to 24 hours.
[222] In order to obtain the maximum conversion of the desired antiester, the equivalent ratio of the anhydride group to the hydroxyl group of the polyol may be at least 0.8: 1 (the anhydride is considered to be monofunctional). A ratio of less than 0.8: 1 can be used but such a ratio results in an increase in lower functional antiester formation.
[223] Useful anhydrides include aliphatic, cycloaliphatic, olefins, cycloolefins, and aromatic anhydrides. Substituted aliphatic and aromatic anhydrides may also be used if the substituent does not adversely affect the reactivity of the hydride group and the physical properties of the reactant polyester. Examples of substituents include chloro, alkyl, and alkoxy. Examples of anhydrides include succinic anhydride, methyl succinic anhydride, dodecenyl succinic anhydride, octadecenyl succinic anhydride, phthalic anhydride, tetrahydrophthalic anhydride, methyltetrahydrophthalic anhydride, hexahydrophthalic anhydride, methyl hexahydrophthalic anhydride (preferably Alkyl hexahydrophthalic anhydride, tetrachlorophthalic anhydride, endomethylene tetrahydrophthalic anhydride, cholenic anhydride, itaconic anhydride, citraconic anhydride, maleic anhydride, and the like.
[224] Among the polyols that can be used are not only simple polyols, ie those containing 2 to 20 carbon atoms, but also polymeric polyols such as polyester polyols, polyurethane polyols and acrylic polyols.
[225] The simple polyols that can be used are diols, triols, tetraols, mixtures of the above. Non-limiting examples of such polyols include those having 2 to 10 carbon atoms, for example aliphatic polyols. Specific examples include, but are not limited to, the following compositions: di-trimethylol propane (bis (2,2-dimethylol) dibutylether); Pentaerythritol; 1,2,3,4-butanetetrol, sorbitol; Trimethylolpropane; Trimethylolethane; 1,2,6-hexanetriol; glycerin; Trishydroxyethyl isocyanurate; Dimethylol propionic acid; 1,2,4-butanetriol; 2-ethyl-1,3-hexanediol; TMP / epsilon-caprolactone triol; Ethylene glycol; 1,2-propanediol; 1,3-propanediol; 1,4-butanediol; 1,5-pentanediol; 1.6-hexanediol; Neopentyl glycol; Diethylene glycol; Dipropylene glycol; 1,4-cyclohexanedimethanol and 2,2,4-trimethylpentane-1,3 diol.
[226] With regard to oligomeric polyols, suitable polyols that can be used are polyols prepared from the reaction of diacids with triols, for example trimethylol propane / cyclohexane diacid and trimethylol propane / adipic acid.
[227] Regarding polymeric polyols, the polyester polyols can be prepared by esterifying organic polycarboxylic acids or anhydrides with organic polyols and / or epoxides. Typically, the polycarboxylic acids and polyols are aliphatic or aromatic divalent acids or acid anhydrides and diols.
[228] Polyols commonly used to make the polyesters include trimethylol propane, di-trimethylol propane, alkylene glycols such as ethylene glycol, neopentyl glycol, and hydrogenated bisphenol-A, cyclohexanediol, cyclohexanedimethanol, Reaction products of lactones, for example, other glycols such as epsilon-alkylated bisphenols, polyester glycols such as poly (oxytetramethylene) glycol and the like.
[229] The acid component of the polyester includes monomeric carboxylic acids or anhydrides having 2 to 18 carbon atoms per molecule. Among the acids that may be used are phthalic acid, isophthalic acid, terephthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid, methylhexahydrophthalic acid, adipic acid, azelic acid, sebaic acid, maleic acid, glutamic acid, chlorendic acid, tetrachlorophthalic acid, and There are several other types of dicarboxylic acids. Higher polycarboxylic acids such as trimellitic acid and tricavallylic acid can also be used.
[230] In addition to polyester polyols formed from polyacids and polyols, polyesters in the form of polylactones may also be used. The product may be formed from the reaction of lactones such as epsilon-caprolactone with polyols such as ethylene glycol, diethylene glycol, trimethylolpropane.
[231] In addition to the polyester polyols, polyurethane polyols such as polyester-urethane polyols which can be formed by reacting organic polyisocyanates with polyester polyols such as those described above can be used. The organic polyisocyanate can be reacted with the polyol such that the OH / NCO equivalent ratio is greater than 1: 1 and the resulting product contains free hydroxyl groups. Organic polyisocyanates that can be used to make the polyurethane polyols can be aliphatic or aromatic polyisocyanates or mixtures. Diisocyanates are preferred, although higher polyisocyanates such as triisocyanates can be used, but result in higher viscosity.
[232] Examples of suitable diisocyanates include 4,4'-diphenylmethane diisocyanate, 1,4-tetramethylene diisocyanate, isophorone diisocyanate, 4,4'-methylenebis (cyclohexyl isocyanate). Examples of suitable polyisocyanates of higher functional groups include polymethylene polyphenol isocyanates.
[233] Silylation is possible, at least in part, and in some cases all acid groups. On the other hand, at least a portion, and in some cases all acid functionalities, can be converted to hydroxyl groups by reaction with an epoxide or aliphatic diol as disclosed above and then silylated.
[234] Useful epoxy-based materials include glycidyl methacrylate, ethylene oxide, butylene oxide, propylene oxide, cyclohexene oxide, glycidyl ethers such as phenyl glycidyl ether, n-butyl glycidyl ether, cresyl glycidyl Epoxy functional monomers such as ethers, isopropyl glycidyl ethers, for example glycidyl esters such as glycidyl versatate, CARDURA E available from Shell Chemical Co., and mixtures of any of the above compounds. Included. Other useful epoxy functional monomers include polymers comprising two or more epoxide or oxirane groups per molecule. Such materials are often referred to as di- or polyepoxides.
[235] The equivalent ratio of epoxy groups to acid groups of esters generally varies from 0.1: 1 to 2: 1, can vary from 0.5: 1 to 1: 1, and typically varies from 0.8: 1 to 1: 1 (these values Includes).
[236] Useful aliphatic diols include 1,2-propanediol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,2-pentanediol, 1,4-pentanediol, 1,2-hexanediol , 1,5-hexanediol, 2-ethyl-1,3-hexanediol, diethylene glycol, dipropylene glycol, 1,4-cyclohexanedimethanol, 2,2,4-trimethyl-1,3-pentanediol And diols containing primary hydroxyl groups such as 3,3-dimethyl-1,2-butanediol.
[237] In one embodiment the present invention relates to the aforementioned composition, wherein said at least one substance comprises at least one compound containing formula (X):
[238]
[239] Other useful materials having ester bonds, urethane bonds, urea bonds, amide bonds, siloxane bonds, ether bonds, and other useful materials having one or more reactive functional groups suitable for silylation have been disclosed in the disclosure of such suitable additive polymers.
[240] Useful reactants include those described in I. Azuma et al., "Acrylic Oligomer for High Solid Automotive Top Coating System Having Excellent Acid Resistance", Pregress in Organic Coatings (1997) pages 1-7 , which are incorporated herein by reference. Acrylic polymers comprising hydroxyl groups protected with hydrolyzable siloxy groups (eg polymerized from vinyl monomers and trimethyl siloxy methylmethacrylate) are included.
[241] In one embodiment the present invention provides a weight percent range of from 0.1 to 90, based on the total weight of the resin solid of the component forming the coating composition when the silyl blocked reactant is added to the other component forming the coating composition. The present invention relates to the aforementioned composition, which is present in the composition. In another embodiment, the present invention provides a weight percent range of at least 0.1 based on the total weight of the resin solids of the components that form the coating composition when the silyl blocked reactant is added to the other components that form the coating composition. The present invention relates to the aforementioned composition, which is present in the composition. In another embodiment, the present invention provides a weight percent range of at least one, based on the total weight of resin solids of the components that form the coating composition when the silyl blocked reactant is added to the other components that form the coating composition. The present invention relates to the aforementioned composition, which is present in the composition. In another embodiment, the present invention provides a weight percent range of at least 5, based on the total weight of resin solids of the components that form the coating composition when the silyl blocked reactant is added to the other components that form the coating composition. The present invention relates to the aforementioned composition, which is present in the composition.
[242] In yet another embodiment, the present invention provides a range of less than 60 based on the total weight of the resin solids of the components that form the coating composition when the silyl blocked reactant is added to the other components that form the coating composition. It relates to the aforementioned composition, which is present in the composition in an amount by weight. In another embodiment, the invention provides a weight in the range of less than 30, based on the total weight of the resin solids of the components that form the coating composition when the silyl blocked reactant is added to the other components that form the coating composition. To the above-mentioned composition present in said composition in an amount of%. In another embodiment, the present invention provides a weight in the range of less than 10, based on the total weight of the resin solid of the component forming the coating composition when the silyl blocked reactant is added to the other component forming the coating composition. To the above-mentioned composition present in said composition in an amount of%. The amount of silyl blocked reactant may have a value between any combination of the above values, including the values recited above.
[243] In another embodiment the invention relates to the aforementioned composition, wherein at least one polysiloxane (a) and at least one other film forming material are present in the process of forming the composition. The film forming material may be, in addition to the at least one polysiloxane (a), at least one functional group containing polymer of the at least one polysiloxane (a) and, if present, reactive with the at least one curing agent. In one embodiment, the one or more additive polymers may have one or more reactive functional groups selected from hydroxyl groups, carbamate groups, epoxy groups, isocyanate groups, carboxyl groups. In another embodiment the additive polymer may have one or more reactive functional groups selected from hydroxyl groups, carbamate groups.
[244] The additive polymer may have one or more reactive functional groups selected from hydroxyl groups, carbamate groups, epoxy groups, isocyanate groups, carboxylic acid groups, and mixtures of any of the above functional groups.
[245] Non-limiting examples of suitable hydroxyl group containing additive polymers include acrylic polyols, polyester polyols, polyurethane polyols, polyether polyols, and mixtures of any of the foregoing compounds. The additive polymer may be an acrylic polyol having a hydroxyl equivalent in the range of 1000 to 100 grams per solid equivalent.
[246] Acrylic polymers comprising suitable hydroxyl groups or carboxyl groups can be obtained from polymerizable ethylenically unsaturated monomers, alkyl esters of (meth) acrylic acid, including (meth) acrylic acid or (meth) acrylates, ethyl (meth) acrylates , Copolymers of butyl (meth) acrylate with hydroxylalkyl esters having one or more polymerizable ethylenically unsaturated monomers such as 2-ethyl hexylacrylate, styrene, alpha-methyl styrene, vinyl aromatic compounds such as vinyl toluene Can be. As used herein, "(meth) acrylate" and similar terms are intended to include both acrylates and methacrylates.
[247] The acrylic polymer can be prepared from ethylenically unsaturated, beta-hydroxyl ester functional monomers. The monomer may be derived from the reaction of an unsaturated acid monomer such as a monocarboxylic acid such as acrylic acid and an epoxy compound that does not participate in the polymerization with the free radical initiated unsaturated acid monomer. Non-limiting examples of such epoxy compounds are glycidyl ethers and esters. Non-limiting examples of suitable glycidyl ethers include glycidyl ethers of alcohols and phenols such as butyl glycidyl ether, octyl glycidyl ether, phenyl glycidyl ether and the like. Non-limiting examples of suitable glycidyl esters include those commercially available from Shell Chemical Company under the trademark CARDURA E and commercially available from ExxonChemical Company under the trademark GLYDEXX-10. On the other hand, the beta-hydroxy ester group monomers are, for example, ethylenically unsaturated epoxy group monomers such as glycidyl (meth) acrylate and allyl glycidyl ether, and saturated monocarboxylic acids such as isosteric acid. Obtainable by saturated carboxylic acids.
[248] Epoxy functional groups are polymerizable ethylenically unsaturated by copolymerizing monomers comprising oxirane groups such as, for example, glycidyl (meth) acrylate and allyl glycidyl ether and other polymerizable ethylenically unsaturated monomers such as those disclosed above. It can be bound to a polymer obtained from monomers. Such epoxy functional acrylic polymers are described in detail in columns 3 to 6 of US Pat. No. 4,001,156, which columns are specifically incorporated by reference herein.
[249] Carbamate functional groups can be bonded to polymers obtained from polymerizable ethylenically unsaturated monomers, for example, by copolymerizing carbamate functional vinyl monomers, such as the above-described ethylenically unsaturated monomers and carbamate group alkyl esters of methacrylic acid. Useful carbamate group alkyl esters can be obtained, for example, by reacting hydroxyalkyl carbamate with methacrylic anhydride (which can be the reaction product of ammonia and ethylene carbonate or propylene carbonate).
[250] Other useful carbamate functional vinyl monomers include, for example, reaction products of hydroxyethyl methacrylate, isophorone hydroxypropyl methacrylate; Or reaction products of hydroxypropyl methacrylate, isophorone diisocyanate, and methanol. Still other carbamate functional vinyl monomers, such as the reaction product of isocyanic acid (HNCO) with hydroxyl group acrylic or methacryl monomers such as hydroxyethyl acrylate, and the United States cited herein by reference The monomers disclosed in patent 3,479,328 can be used. Carbamate functional groups can also be bound to the acrylic polymer by reacting the hydroxyl functional acrylic polymer with a low molecular weight alkyl carbamate such as methyl carbamate. Pendant carbamate groups can also be bound to the acrylic polymer by "transcarbamoylation" where the hydroxyl functional acrylic polymer reacts with low molecular weight carbamate derived from alcohols or glycol ethers. The carbamate group can be exchanged with the hydroxyl group to obtain the carbamate functional acrylic polymer and the original alcohol or glycol ether. The hydroxyl functional acrylic polymer may also react with isocyanic acid to provide pendant carbamate groups. In the same way, the hydroxyl functional acrylic polymer can be reacted with urea to provide pendant carbamate groups.
[251] Polymers prepared from polymerizable ethylenically unsaturated monomers are suitable catalysts, for example organic hydrogen peroxides or azo compounds, for example benzoyl peroxide or N, N-, by solution polymerization techniques (which are well known to those skilled in the art). It may be prepared under azobis (isobutylonitrile). The polymerization is carried out in an organic solution in which the monomer is soluble by conventional techniques in the art. On the other hand, such polymers may be prepared by water soluble emulsion or dispersion polymerization techniques (which are well known in the art). The proportion of the reactants and the reaction conditions are chosen to produce an acrylic polymer having the desired pendant functional group.
[252] Polyester polymers are also useful as the additive polymer in the compositions of the present invention. Useful polyester polymers contain condensation products of polyhydric alcohols and polycarboxylic acids. Non-limiting examples of suitable polyhydric alcohols include ethylene glycol, neopentyl glycol, trimethylol propane, and pentaerythritol. Non-limiting examples of suitable polycarboxylic acids include adipic acid, 1,4-cyclohexyl dicarboxylic acid, hexahydrophthalic acid. In addition to the polycarboxylic acids, functional equivalents of the acids, for example anhydrides if present or low-cost alkyl esters of the acids, for example Ester may be used. Small amounts of monocarboxylic acids such as stearic acid can also be used. Reactant proportions and reaction conditions are selected to produce polyester polymers having the desired pendant functional groups, ie carboxyl or hydroxyl functional groups.
[253] For example, hydroxyl group-containing polyesters may be prepared by reacting anhydrides of dicarboxylic acids, such as hexahydrophthalic anhydride, with a diol such as neopentyl glycol in a 1: 2 molar ratio.
[254] If for the purpose of improving air-drying, suitable dry oil fatty acids can be used, which may include those derived from linseed oil, soybean oil, tall oil, dehydrated castor oil or kerosene.
[255] Carbamate functional polyesters can be prepared by first forming hydroxyalkyl carbamate that can react with the polyacid and polyol used to form the polyester. On the other hand, the terminal carbamate functional group can be bonded to the polyester by reacting isocyanic acid with the hydroxy functional polyester. Carbamate functional groups can also be bonded to polyesters by reacting hydroxyl polyesters with urea. Carbamate groups can also be bonded to the polyester by transcarbamoylation reactions. Suitable processes for preparing carbamate functional group-containing polyesters are disclosed in column 2, line 40 to column 4, line 9 of US Pat. No. 5,593,733, which is incorporated herein by reference.
[256] Polyurethane polymers containing terminal isocyanates or hydroxyl groups can be used as the additive polymer in the compositions of the present invention. Polyurethane polyols or NCO-terminated polyurethanes that can be used are those prepared by reacting polyols including polymeric polyols with polyisocyanates. Terminal isocyanates or primary or secondary amine group containing polyureas that may also be used may be those prepared by reacting polyamines, for example and without limitation, polymeric polyamines with polyisocyanates.
[257] The hydroxy / isocyanate or amine / isocyanate equivalent ratio can be controlled and the reaction conditions can be chosen such that the desired end groups are obtained. Non-limiting examples of suitable polyisocyanates include those disclosed in column 5, line 26 to column 6, line 28 of US Pat. No. 4,046,729, which is incorporated herein by reference. Non-limiting examples of suitable polyols include those disclosed in column 7, line 52 to column 10, line 35 of US Pat. No. 4,046,729, which is incorporated herein by reference. Non-limiting examples of suitable polyamines include those disclosed in column 6, line 61 to column 7, line 32, and column 3, line 13 to 50, of US Pat. No. 3,799,854, which are incorporated herein by reference.
[258] Carbamate functional groups can be introduced into the polyurethane polymer by reacting the polyisocyanates with polyesters containing hydroxyl functional groups and pendant carbamate groups. On the other hand, the polyurethane can be prepared by reacting the polyisocyanate with the polyester polyol and hydroxyalkyl carbamate or isocyanic acid as separate reactants. Non-limiting examples of suitable polyisocyanates include aromatic isocyanates such as 4,4'-diphenylmethane diisocyanate, 1,3-phenylene diisocyanate and toluene diisocyanate, and aliphatic polyisocyanates such as 1,4 -Tetramethylene dithiocyanate and 1,6-hexamethylene diisocyanate. Alicyclic diisocyanates such as 1,4-cyclohexyl diisocyanate and isophorone diisocyanate can be used.
[259] Non-limiting examples of suitable polyether polyols include polyalkylene ether polyols, for example compounds of formula VII or VIII:
[260]
[261]
[262] In the above formulas,
[263] Substituent R is a lower alkyl group of 1 to 5 carbon atoms including hydrogen or mixed substituents,
[264] n has a value ranging from 2 to 6,
[265] m has a value ranging from 8 to 100 or more.
[266] Non-limiting examples of polyalkylene ether polyols include poly (oxytetramethylene) glycol, poly (oxytetraethylene) glycol, poly (oxy-1,2-propylene) glycol and poly (oxy-1,2-butylene) Glycols.
[267] Various polyols such as, but not limited to, glycols such as ethylene glycol, 1,6-hexanediol, bisphenol A and the like, or other higher polyols such as trimethylolpropane, pentaerythritol and the like oxyalkylation Polyether polyols formed from these may also be useful. Polyols of higher functional groups which may be used as shown above may be prepared by oxyalkylation of compounds such as, for example, sucrose or sorbitol. One oxyalkylation method that can be used is the reaction of a polyol in the presence of an acidic or basic catalyst with an alkylene oxide, such as but not limited to propylene or ethylene oxide. Examples of specific and non-limiting polyethers are the trade names TERATHANE and TERACOL available from this eye Dupont Dnemoa.
[268] In one embodiment, the present invention relates to the aforementioned cured composition, wherein the at least one film forming material comprises a reactive functional group that is a thermally curable functional group. In another embodiment, one or more of the reactive functional groups of the film forming material are curable by ion beam or actinic radiation. In another embodiment, the film forming material comprises one or more functional groups curable by thermal energy and one or more functional groups curable by ion rays or actinic rays.
[269] Useful radiation curable groups present as reactive functional groups of the polysiloxanes include unsaturated groups such as vinyl groups, vinyl ester groups, epoxy groups, maleimide groups, fumarate groups, and combinations thereof. In one embodiment the groups curable by ultraviolet light include acrylate groups, maleimides, fumarates and vinyl ethers. Suitable vinyl groups include unsaturated ester groups and vinyl ether groups (disclosed below).
[270] In one embodiment, the one or more additive polymers may have a weight average molecular weight (Mw) in the range of 1000 to 20,000 as measured by gel permeation chromatography using polystyrene standards. In another embodiment, the Mw of the one or more additive polymers ranges from 1500 to 15,000 and can range from 2000 to 12,000 as measured by gel permeation chromatography using polystyrene standards.
[271] In embodiments in which at least one each of the at least one polysiloxane (a) and the at least one additional polymer is present in the formation of the composition, the reactive functional groups of the at least one polysiloxane (a) and the additive polymer are the same or different. It may be mentioned, however, that each must be reactive with at least one functional group of the curing agent when used. Non-limiting examples of such reactive functional groups include hydroxyl groups, carboxylic acid groups, isocyanate groups, carboxylate groups, primary amine groups, secondary amine groups, amide groups, carbamate groups, and epoxy groups.
[272] In an embodiment of the invention, the additive polymer having one or more reactive functional groups, when used, is generally present in an amount of at least 2% by weight when added to other components of the composition. The additive polymer may be present in an amount of at least 5% by weight, typically in an amount of at least 10% by weight, based on the total weight of the resin solid of the components forming the composition. In addition, the additive polymer having one or more reactive functional groups, when used, is generally present in an amount of less than 80% by weight when added to other components of the composition. It is present in an amount of less than 60% by weight, typically in an amount of less than 50% by weight, based on the total weight of the resin solids of the components that form the composition. The amount of additive polymer having one or more reactive functional groups present in the composition is between any combination of these values, including the values recited above.
[273] The composition of the present invention may be a solvent based composition, an aqueous based composition, a solid solid form, ie a powder composition, or a powder mud form, ie an aqueous dispersion. The composition of the invention used to form the cured composition of the invention may be dissolved or dispersed in an organic solvent. Non-limiting examples of suitable organic solvents include alcohols such as butanol; Ketones such as metel amyl ketone; Aromatic hydrocarbons such as xylene; And glycol ethers such as ethylene glycol monobutyl ether; ester; Other solvents; And mixtures of any of the above compounds.
[274] In the solvent-based composition, the organic solvent is generally present in an amount of 5 to 80% by weight, and may be present in an amount of 30 to 50% by weight, based on the total weight of the resin solid of the components forming the composition ( The values recited above). The composition disclosed above may have a total solids content in the range of 40 to 75 wt% and a total solids content in the range of 50 to 70 wt%, based on the total weight of the resin solids of the components forming the composition (cited above) Included values). On the other hand, the composition of the invention may be in the form of solid particles suitable for use as a powder coating or suitable for dispersion in liquid media such as water as powder mud.
[275] In another embodiment in which the composition is composed from one or more reactants as above, the catalyst is additionally present in the formation of the composition. In one embodiment, the catalyst is present in an amount sufficient to promote a reaction between one or more reactive functional groups of the reactant and one or more reactive functional groups of the one or more polysiloxanes (a). In one embodiment the catalyst is an acidic catalyst.
[276] Non-limiting examples of suitable catalysts are acidic materials such as acidic phosphates such as phenyl acid phosphate, and substituted or unsubstituted sulfonic acids such as dodecylbenzene sulfonic acid or para-toluene sulfonic acid. Non-limiting examples of catalysts suitable for the reaction of isocyanate groups with hydroxyl groups include tin catalysts such as dibutyl tin dilaurate. Non-limiting examples of epoxy acid based catalysts are tertiary amines such as N, N'-dimethyldodecyl amine. In another embodiment, the catalyst may be a phosphated polyester or phosphated epoxy. In this embodiment, the catalyst is for example bisphenol A glycidyl ether having phosphoric acid and two hydrogenated phenol rings (eg DRH-151, which is commercially available from Shell Chemical Company). It may be a reaction product of. The catalyst, when added to other components of the composition, may be present in an amount ranging from 0.1 to 5.0 wt%, based on the total weight of the composition, and typically present in an amount ranging from 0.5 to 1.5 wt% (values recited above) Including them).
[277] In another embodiment, additional compositions may be present during the formation of the compositions described above. Such additional compositions include, but are not limited to, softeners, plasticizers, (eg polysiloxane) surfactants, thixotropic agents, gas release inhibitors, organic cosolvents, flow regulators, hindered amine light stabilizers, antioxidants, ultraviolet light as defined herein. Light absorbents, colorants or tints, and similar additives customary in the art, as well as mixtures of any of the foregoing materials, are included in the composition. Such additional components may be present in amounts up to 40% by weight based on the total weight of the resin solids of the components that form the composition when added to other components of the composition.
[278] In yet another embodiment of the invention one or more surface active agents may be present in the formation of the composition as described above. The one or more surfactants may be selected from anionic, nonionic, and cationic surfactants.
[279] As used herein, "surface active agent" means any material that tends to reduce the surface tension or surface energy of the cured composition or coating. That is, the cured composition or coating formed from a composition formed from a component comprising a surface active agent has a lower solid surface tension or surface energy than the cured coating formed from a similar composition that does not include the surface active agent in the formation.
[280] For the purposes of the present invention, solid surface tension can be measured according to the Owens-Wendt method using Rame'-Hart Contact Angle Goniometer with distilled water and methylene iodide as reagent. Generally, one reagent of 0.02 cc drops is placed on the cured coating surface and the contact angle and its complement angle are measured with a standard microscope equipped with the goniometer. The contact angle and its complement angle are measured for each three drops. This process is repeated using different reagents. The average value of six measurements for each reagent is calculated. The solid surface tension is calculated using the Owens-Wendt equation:
[281]
[282] In the above formula,
[283] γ | is the surface tension of the liquid (methylene iodide = 50.8, distilled water = 72.8), γ ^d and γ ^p are dispersions and polar components (methylene iodide γ ^d = 49.5, γ ^p = 1.3; distilled water γ ^d = 21.8, γ ^p = 51.0);
[284] Measure the value of Φ and determine the value of cosΦ.
[285] Two equations, one for methylene iodide and one for water, are established. The only unknowns are γ _s ^d and γ _s ^p . The combined two components represent the total solid surface tension.
[286] The one or more auxiliary surface active agents can be selected from amphoteric reactive functional groups containing polysiloxanes, amphoteric fluoropolymers and mixtures of any of the foregoing compounds. With respect to water soluble or water dispersible amphoteric materials, the term "amphoteric" means a polymer having a hydrophilic polar end and a hydrophobic end that is generally water insoluble. Non-limiting examples of functional group-containing polysiloxanes suitable for use as surface active agents include the aforementioned polysiloxanes. Non-limiting examples of suitable amphoteric fluoropolymers include, but are not limited to, fluoroethylene-alkyl vinyl ether alternating copolymers available from Asahi Glass Company under the trade name LUMIFLON (see, for example, US Pat. No. 4,345,057). those); Fluorosurfactants such as fluoroaliphatic polymeric esters commercially available under the trade name FLUORAD from St. Paul, MN; Functionalized perfluorinated materials, such as 1H, 1H-perfluoro-nonanol commercially available from FluoroChem USA; And perfluorinated (meth) acrylate resins.
[287] Non-limiting examples of other auxiliary surface active agents suitable for use in the cured compositions or coatings of the present invention may include anionic, nonionic and cationic surface active agents.
[288] Non-limiting examples of suitable anionic surface active agents include sulfates or sulfonates. Specific non-limiting examples include higher alkyl mononuclear aromatic sulfonates, for example higher alkyl benzene sulfonates containing alkyl groups of 10 to 16 carbon atoms and straight or branched chains such as decyl, undecyl, dodecyl, tri Sodium salts of decyl, tetradecyl, pentadecyl or hexadecyl benzene sulfonate and higher alkyl toluene, xylene and phenol sulfonates; Alkyl naphthalene sulfonates and sodium dinonyl naphthalene sulfonates. Other non-limiting examples of suitable anionic surface active agents are olefin sulfonates such as long chain alkylene sulfonates, long chain hydroxyalkane sulfonates and mixtures of any of the foregoing compounds. Non-limiting examples of other sulfate or sulfonate detergents are the reaction products of paraffin sulfonates, such as alpha olefins and bisulfites, such as sodium bisulfite. Also sulfates of higher alcohols such as sodium lauryl sulfate, sodium tallow alcohol sulfate, or sulfates of mono- or di-glycerides of fatty acids such as stearic acid monoglyceride monosulfate, alkyl poly (ethoxy) Ether sulfates, such as but not limited to sulfates of condensation products of ethylene oxide and lauryl alcohol (usually containing 1 to 5 ethoxy groups per molecule); Lauryl or other higher alkyl glyceryl ether sulfonates; Also included are aromatic poly (ethenoxy) ether sulfates, such as, but not limited to, sulfates of condensation products of ethylene oxide and nonyl phenol, usually containing 1 to 20 oxyethylene groups per molecule.
[289] Further non-limiting examples include salts of alkyl aryl ethoxy sulfates available under the general brand name ABEX from sulfated aliphatic alcohols, alkyl ether sulfates or long-furans. Anionic surface active agents of the phosphate mono- or di-ester type can also be used. These anionic surface active agents are well known in the art and are commercially available from GAF Corporation under the trade name GAFAC and under the trade name TRITON from Rohm and Haas Co., Ltd.
[290] Non-limiting examples of non-ionic surface active agents suitable for use in the cured compositions or coatings of the present invention include the general formula RO (R'O) nH, where substituent R represents a hydrocarbon group having 6 to 60 carbon atoms, and substituent R 'Represents an alkylene group having 2 or 3 carbon atoms and any of the above mixtures, n being an integer ranging from 2 to 100).
[291] Such nonionic surface active agents can be prepared by treating fatty alcohols or alkyl substituted phenols with excess ethylene or propylene oxide. The alkyl carbon chain may contain 14 to 40 carbon atoms and may be derived from long chain fatty alcohols such as oleyl alcohol or stearyl alcohol. Non-ionic polyoxyethylene surface active agents of the type represented by the above formula are manufactured under the trade name SURFYNOL® from Air Products Chemicals, Inc .; PLURONIC® or TETRONIC® from BASF Corporation; TERGITOL® from Union Carbide; And HURTSMAN Corporation, commercially available as SURFONIC®. Other non-limiting examples of suitable non-ionic surfactants include block copolymers of ethylene oxide and propylene oxide based on glycols such as ethylene glycol or propylene glycol, such as but not limited to the trade name PLURONIC® from BASF Corporation. There are things that can be obtained.
[292] As indicated above, cationic surfactants may also be used. Non-limiting examples of cationic surface active agents suitable for use in the cured compositions or coatings of the present invention include ARMAC® HT, an acetic acid salt of n-alkyl amines available from Akzo Nobel Chemicals. Acid salts of the same alkyl amine; Imidazoline derivatives such as CALGENE® C-100 available from Calgene Chemicals Inc .; Ethoxylated amines or amides such as DETHOX® amine C-5, a cocoamine ethoxylate available from Deforest Enterprises; Ethoxylated fatty amines, such as ETHOX® TAM, available from Ethox Chemicals, Inc .; And glyceryl esters such as LEXEMUL®AR, a glyceryl stearate / stearaiethyl diethylamine available from Inolex Chemical Co.
[293] Other examples of suitable surface active agents may include polyacrylates. Non-limiting examples of suitable polyacrylates include homopolymers and copolymers of acrylate monomers such as polybutylacrylate, and acrylate monomers (eg ethyl (meth) acrylate, 2-ethylhexylacrylate, Butyl (meth) acrylate and isobutyl acrylate), and copolymers derived from hydroxy ethyl (meth) acrylate and (meth) acrylic acid monomers. In one embodiment, the polyacrylate may have amino and hydroxy functional groups. Suitable amino and hydroxy functional acrylates are disclosed in Example 26 below and US Pat. No. 6,013,733, which is incorporated herein by reference. Another example of useful amino and hydroxyl functional copolymers is a copolymer of hydroxy ethyl acrylate, 2-ethylhexyl acrylate, isobutyl acrylate and dimethylamino ethyl methacrylate. In another embodiment, the polyacrylate may have an acid functional group that may be provided by incorporating an acid functional monomer, for example (meth) acrylic acid, into, for example, the components used to prepare the polyacrylate. have. In another embodiment, the polyacrylate is an acid functional monomer such as (meth) acrylic acid and a hydroxy functional monomer, such as hydroxy, for example in the components used in the preparation of the polyacrylate. It may have an acid functional group and a hydroxy functional group which may be provided by incorporating ethyl (meth) acrylate.
[294] In one embodiment, the present invention relates to a powder composition formed from a component comprising:
[295] (a) at least one surface active agent comprising:
[296] (i) at least one surface active agent comprising at least one reactive functional group comprising at least one formula I unit; And
[297] (ii) at least one polyacrylate surface active agent having amino and hydroxy functional groups, acid functional groups and at least one functional group selected from acid and hydroxy functional groups; And
[298] (b) a plurality of particles,
[299] Wherein each component is different and at least one reactive functional group of the at least one polysiloxane and at least one functional group of the at least one polyacrylate surface active agent are substantially non-reactive with the particles.
[300] Formula I
[301] R ¹ _n R ² _m SiO _{(4-nm) / 2}
[302] Where
[303] Each R ¹ may be the same or different and is H, OH, a monovalent hydrocarbon group or a monovalent siloxane group;
[304] Each R ² may be the same or different and represents a group comprising one or more reactive functional groups;
[305] m and n satisfy the requirements of 0 <n <4, 0 <m <4 and 2≤ (m + n) <4.
[306] In yet another embodiment, the present invention is directed to a substrate and a coated substrate containing a composition coated with at least a portion of the substrate, wherein the composition is selected from any of the above compositions. In yet another embodiment, the present invention is directed to a method of coating a substrate, including coating the composition over at least a portion of the substrate, wherein the composition is selected from any of the above compositions. In another embodiment, the present invention relates to a method of forming a cured composition on a substrate, including coating the coating composition on at least a portion of the substrate in accordance with any of the above compositions.
[307] In another embodiment, the present invention relates to a method of coating a substrate, further comprising curing the composition after being applied to the substrate. In these embodiments the components used in the preparation of the composition can be selected from the components discussed above.
[308] As used herein, a composition "on at least a portion of a substrate" refers to a composition that is applied directly on at least a portion of the substrate, as well as any coating that is pre-applied on at least a portion of the substrate.
[309] The compositions of the present invention can be applied on virtually any substrate, such as wood, metal, glass, clothing, plastics, foamed products, polymeric substrates, for example dung elastomeric substrates, and the like. In one embodiment, the present invention relates to the aforementioned coated substrate, wherein said coated substrate is a flexible substrate. In another embodiment, the present invention relates to the aforementioned coated substrate, wherein said coated substrate is a rigid substrate.
[310] In another embodiment, the present invention relates to the aforementioned coated substrate, wherein said coated substrate is a ceramic substrate. In yet another embodiment, the present invention relates to the aforementioned substrate, wherein said coated substrate is a polymeric substrate. In another embodiment, the present invention relates to a metallic substrate and a composition containing coated metallic substrate coated over at least a portion of the metallic substrate, wherein the composition is selected from any of the above compositions. In such embodiments the components used to form the composition may be selected from the components discussed above, and further components may also be selected from those cited above.
[311] A further embodiment of the present invention relates to a coated automotive substrate comprising an automotive substrate and a composition (selected from any of the above compositions) coated over at least a portion of the automotive substrate. In yet another embodiment, the invention relates to a method of making a coated automotive substrate comprising providing an automotive substrate and coating a composition selected from any of the above compositions on at least a portion of the automotive substrate. Again, in these embodiments the components used in the preparation of the composition may be selected from those discussed above, and further components may be selected from those cited above.
[312] Suitable polymeric or flexible elastomeric substrates may include any of the above thermoplastic or thermoset synthetic materials well known in the art. Non-limiting examples of suitable flexible elastomeric base materials include polyethylene, polypropylene, thermoplastic polyolefin ("TPO"), reaction injection molded polyurethane ("RIM"), and thermoplastic polyurethane ("TPU").
[313] Non-limiting examples of thermoset materials useful as substrates in the context of the present invention include polyesters, epoxides, phenols, polyurethanes, such as "RIM" thermosets, and mixtures of any of the foregoing materials. Non-limiting examples of suitable thermoplastics include thermoplastic polyolefins such as polyethylene, polypropylene, polyamides such as nylon, thermoplastic polyurethanes, thermoplastic polyesters, acrylic polymers, vinyl polymers, polycarbonates, acrylonitrile-butadiene -Styrene ("ABS") copolymers, ethylene propylene diene terpolymer ("EPDM") rubbers, copolymers and mixtures of any of the foregoing materials.
[314] Non-limiting examples of suitable metal substrates include ferrometals (eg, iron, steel, and alloys above), nonferros metals (eg, aluminum, zinc, magnesium, and alloys above), and any Mixtures of the above. Specific applications of automotive components include cold rolled steel, electrogalvanized steel such as hot dip electrogalvanized steel, electrogalvanized iron-zinc steel, aluminum, And magnesium.
[315] When the substrate is used as a component for processing automotive vehicles (eg, without limitation, automobiles, trucks and tractors), the substrate may have any form and may be selected from the metal sheets and soluble substrates discussed above. Can be. Typical forms of automotive body components include bodies (frames), hoods, doors, mirror housings, fenders, bumpers, and light trims for automotive vehicles.
[316] In another embodiment, the present invention relates to the aforementioned coated automotive substrate, wherein said coated automotive substrate is a hood. In another embodiment, the present invention relates to the aforementioned coated automotive substrate, wherein said coated automotive substrate is a door. In another embodiment, the present invention relates to the coated automotive substrate described above, wherein said coated automotive substrate is a fender. In another embodiment, the present invention relates to the aforementioned coated automotive substrate, wherein the coated automotive substrate is a mirror housing. In another embodiment, the present invention relates to the above-described coated automotive substrate, which is a quarter panel. It relates to one coated automotive substrate. In this embodiment the components used to form the composition used to coat the automotive substrate may be selected from those discussed above, and further components may also be selected from those cited above.
[317] In embodiments of the present invention for automotive applications, the coated composition can be, for example, the electrodeposition coating, primer coating, undercoat and / or topcoat. Suitable top coats include single coating materials and undercoat / transparent coat composites. Single coatings are formed from one or more colored coating composition layers. The undercoat / transparent coat composite includes at least one colored undercoat composition layer and at least one transparent coat composition layer, wherein the undercoat composition has at least one component different from the transparent coat composition. In embodiments of the present invention related to automotive applications, the transparent coating may be transparent after being applied.
[318] In another embodiment, the present invention is directed to a multicomponent composite coating composition comprising a undercoat deposited from a colored coating composition, and a topcoat composition applied over at least a portion of the undercoat, wherein the topcoat composition is any of the foregoing. Is selected from the composition. In one embodiment, the present invention relates to a multicomponent composite coating composition as described above, wherein the topcoat composition is clear after curing and selected from any of the aforementioned compositions. In these embodiments the components used in the preparation of the topcoat composition may be selected from the coating components discussed above.
[319] In some cases, the undercoat and transparent topcoat (i.e., clearcoat) compositions used in the multicomponent composite coating compositions of the present invention may have a high solids liquid coating composition, i. It can mix | blend with the composition containing a solid. The solids content can be measured by heating a sample of the composition to 105-110 ° C. for 1-2 hours to expel volatiles and subsequently measure the relative weight loss. As mentioned above, the composition may be a liquid coating composition, but it may also be formulated as a powder coating composition.
[320] The coating composition of the undercoat in color + transparent systems can be any composition useful for coating applications, in particular automotive applications. The coating composition of the undercoat can include a pigment that acts as a resinous binder and a colorant. Non-limiting examples of resinous binders are acrylic polymers, polyesters, alkyds and polyurethanes.
[321] The resinous binder of the undercoat can be an organic solvent based material, for example those disclosed in column 2, line 24 to column 4, line 40 of US Pat. No. 4,220,679, which is incorporated by reference in its entirety. In addition, aqueous coating compositions, such as those disclosed in US Pat. Nos. 4,403,003, 4,147,679 and 5,071,904, can be used as binders in the undercoat compositions. These US patents are incorporated herein by reference.
[322] The undercoat composition may include one or more pigments as colorants. Non-limiting examples of suitable metal pigments include aluminum flakes, copper bronze flakes, and metal oxide coated mica.
[323] In addition to the metal pigments, the undercoat compositions may include non-metal color pigments commonly used in surface coatings, such as inorganic pigments such as titanium dioxide, iron oxide, chromium oxide, lead chromate and carbon black; And organic pigments such as phthalocyanine blue and phthalocyanine green.
[324] Any of the components in the undercoat composition may include those well known in the art of surface coating formulations, and may include surface active agents, flow control agents, thixotropic agents, fillers, gas release agents, organic cosolvents, catalysts, and other conventional auxiliaries. It may include. Non-limiting examples of these materials and suitable amounts are described in U.S. Patent Nos. 4,220,679; 4,403,003; 4,147,769; And 5,071,904.
[325] The undercoat composition may be applied to the substrate by any conventional coating technique such as brushing, spraying, dipping or flowing. Spray techniques and devices of automatic or manual air spraying, airless spraying and electrostatic spraying, known in the art, can be used.
[326] While applying the undercoat to the substrate, the film thickness of the undercoat formed on the substrate may range from 0.1 to 5 mils. In another embodiment, the film thickness of the undercoat formed on the substrate may range from 0.1 to 1 mil, and may be 0.4 mil.
[327] After the film of the undercoat is formed on the substrate, a drying step may be added to cure the undercoat, or, on the other hand, to dissolve the solvent from the undercoat by heating or air drying prior to application of the transparent coat. Suitable drying conditions may vary depending on the particular undercoat composition, and when the composition is aqueous, but a drying time of 1 to 15 minutes at a temperature of 75 to 200 ° F. (21 to 93 ° C.) may be suitable.
[328] The transparent top coat composition may be applied to the undercoat by any conventional coating technique, for example, but not limited to compressed air spray, electrostatic spray, and automatic or manual methods. The transparent top coat may be applied to the cured or dried undercoat before curing of the undercoat. In the latter case, the two coating layers can be heated to cure the two coating layers simultaneously. Typical curing conditions can be 1 to 30 minutes at 50 to 475 ° F. (10 to 246 ° C.). Meanwhile, the transparent top coat may be cured by a combination of ion rays or actinic rays or thermal energy and ion rays or actinic rays as described above. The thickness (dry film thickness) of the transparent coating film may be 1 to 6 mils.
[329] A second top coat coating composition may be applied to the first top coat to produce a "transparent over transparency" top coat. The first top coat composition may be applied on the bottom coat as described above. The second top coat coating composition may be applied to the first top coat that is cured or dried before the bottom coat and the first top coat are cured. Subsequently, the undercoat, first topcoat and second topcoat may be heated to cure these three coating layers simultaneously.
[330] The second transparent top coat and the first transparent top coat coating compositions may be the same or different, provided that, when wet-on-wet is applied, one top coat is, for example, a solvent from the underlying layer. Of course, by suppressing the water evaporation should not substantially interfere with the curing of the other top coat. Further, the first top coat, the second top coat or both may be the coating composition of the present invention. The first transparent top coat coating composition may be substantially any top coat composition known to those skilled in the art. The first transparent top coat composition may be either aqueous or solvent based, or on the one hand in the form of solid particulates, ie powder coatings.
[331] Non-limiting examples of suitable first topcoat compositions include crosslinkable coating compositions that include one or more thermosetting coating materials and one or more curing agents. Suitable aqueous transparent coatings are disclosed in US Pat. No. 5,098,947, incorporated herein by reference, and based on water soluble acrylic resins. Useful solvent based transparent coatings are disclosed in US Pat. Nos. 5,196,485 and 5,814,410, which are incorporated herein by reference and include polyepoxides and polyacid curing agents. Suitable powder transparent coatings are disclosed in US Pat. No. 5,663,240, which is incorporated herein by reference, and includes epoxy functional acrylic copolymers and polycarboxylic acid curing agents.
[332] Typically, after the first top coat is formed over at least a portion of the undercoat, the first top coat is subjected to heating or, on the other hand, to dislodge the solvent from the film by an air drying process or curing step before application of the second top coat. A drying step is added. Suitable drying conditions will vary with the particular first topcoat composition and ambient humidity if the composition is aqueous, but drying times of 1-15 minutes are generally suitable at temperatures of 75-200 ° F. (21-93 ° C.). can do.
[333] The polysiloxane-containing second top coat coating composition of the present invention may be applied as described above for the first top coat by any conventional coating application technique. Curing conditions may be as described for the top coat. The second top coat dry film thickness may range from 0.1 to 3 mils.
[334] It should be mentioned that it may be advantageous to combine the polysiloxane containing coating composition into a "single coating", ie a coating which essentially forms one coating layer when applied to a substrate. The single coat coating composition may be colored. Non-limiting examples of suitable pigments are as mentioned above. When used as a single coating, the polysiloxane containing coating composition of the present invention may be applied (by any conventional application technique discussed above) into two or more continuous coatings, and in some cases the coatings may only be applied in an instant. . Upon curing, the various coatings may essentially form one coating layer.
[335] In another embodiment, the present invention provides a coating composition comprising (a) applying a colored composition to a substrate to form a undercoat; (b) applying a top coat composition on at least a portion of the undercoat to form a top coat thereon, wherein the top coat is selected from any of the compositions described above. The top coat may be cured. The components used in the preparation of the topcoat composition in this embodiment may be selected from the coating components discussed above and further components may be selected from those cited above. In another embodiment the coating composition is thermally cured after being applied to the substrate. In yet another embodiment, the coating composition is cured by exposure to actinic radiation after being applied to the substrate, while in another embodiment the coating composition is applied to (1) ion rays or actinic radiation after being applied to the substrate. It is hardened by exposure and (2) thermal energy.
[336] Coatings made from the compositions according to the present invention may have significant appearance and initial scratch resistance as well as weathering or "holding" scratch resistance, which may be before or after abrasion of the coated substrate. It can be evaluated by measuring the gloss of the coated substrate.
[337] In one embodiment, the present invention is directed to a method of improving the scratch resistance of a substrate, including incorporating any of the compositions of the invention disclosed in the substrate. In another embodiment, the present invention is directed to a method of improving stain repellency of a substrate, including incorporating any of the inventive compositions disclosed herein in the substrate.
[338] In another embodiment, the present invention relates to a method of retaining the gloss of a substrate after a period of time, including incorporating any of the inventive compositions disclosed in the substrate on the substrate. In another embodiment, the present invention relates to a method of revitalizing the gloss of a substrate, including incorporating any of the inventive compositions disclosed herein in the substrate.
[339] In one embodiment, the invention relates to a cured composition having an initial scratch resistance value to retain a value of at least 40% of the initial 20 ° gloss after a scratch test. In another embodiment, the present invention is directed to a cured composition having an initial scratch resistance value to retain a value of at least 50% of the initial 20 ° gloss after a scratch test. In another embodiment, the present invention relates to a cured composition having an initial scratch resistance value to retain a value of at least 70% of the initial 20 ° gloss after a scratch test.
[340] In another embodiment, the present invention relates to a cured composition having a scratch resistance value retained to retain a value of at least 30% of the initial 20 ° gloss after a scratch test. In another embodiment the invention relates to a cured composition having a scratch resistance value retained to retain a value of at least 40% of the initial 20 ° gloss after a scratch test. In another embodiment, the present invention relates to a cured composition having a scratch resistance value retained to retain at least 60% of the initial 20 ° gloss after a scratch test.
[341] Initial 20 ° gloss of the cured coated substrate according to the present invention can be measured using a 20 ° NOVO-GLOSS 20 statistical glossmeter available from Gardner Instrument Company, Inc. Can be. The coating or substrate was linearly rubbed 10 times in double with weighed sandpaper using the Atlas AATCC Scratch Tester Model CM-5, available from Atlas Electrical Devices Company, Chicago, Illinois. By scratching, a scratch test can be applied to the coated substrate. The sandpaper is a 3M 281Q WETORDRY ^™ PRODUCTION ^™ 9 micron abrasive paper sheet (available from 3M Company, St. Paul, MN). The panel is then rinsed with tap water and gently pated with a paper towel to dry. 20 ° gloss is measured on the scratched area of each test panel. The number recorded is the percentage of initial gloss retained after the scratch test, ie 100% x scratched gloss / initial gloss. The test method is fully described in the following examples.
[342] In another embodiment, the present invention relates to a cured coating formed from any of the compositions described above. In another embodiment, the cured composition is thermally cured. In another embodiment, the cured composition is cured by exposure to ion beams, while in yet another embodiment, the cured composition is cured upon exposure to actinic radiation. In another embodiment, the cured composition is cured by exposure to (1) ions or actinic rays and (2) thermal energy.
[343] In another embodiment, the compositions of the present invention may also be useful as decorative or protective coatings on colored plastic (elastomeric) substrates, such as those described above or mold-in-color ("MIC") plastic substrates. Can be. In this use, the composition can be applied directly to the plastic substrate or incorporated into the molding matrix. Optionally, an adhesion promoter may first be applied directly to the plastic or elastomeric substrate and then applied to the composition applied as a top coat thereon. It may also be advantageous to formulate the compositions of the present invention as colored coating compositions for use as primer coatings, as undercoats of multicomponent composite coatings, and as single coat topcoats including pigments or colorants. In these embodiments the components used in the preparation of the composition may be selected from the coating components discussed above and further components may be selected from those cited above.
[344] In another embodiment of the present invention, a composition is disclosed that is cured with a transparent heat that includes a plurality of particles in the cured composition. As disclosed in more detail below, in this embodiment, the initial portion of the occupancy is present at a higher concentration than the second portion of the particles present in the interior region of the cured composition in the surface region of the cured composition. In some cases, the BYK Haze value of the cured composition is less than 50, may be less than 35, and often less than 20, as measured using a BYK Haze gloss meter available from BYK Chemie USA.
[345] As used herein, the “surface area” of the composition is generally parallel to the exposed air-surface of the coated substrate and generally extends perpendicularly from the cured coating surface, at least 20 to 150 nanometers below the exposed surface. It means an area having a thickness in the range. In some embodiments, the thickness of this surface area ranges from at least 20 to 100 nanometers and may range from 20 to 50 nanometers. As used herein, "inner region" of the cured composition refers to an area that extends below the surface area and generally parallel to the surface of the coated substrate. The inner region has a thickness from the interface with the surface region to the substrate or coating layer under the cured composition via the cured coating.
[346] In embodiments of the invention wherein the particles have an average particle size of at least 50 nanometers, the thickness of the surface area generally extends from the surface of the cured coating to a depth of three times the average particle size of the particles, This surface extends to a depth of twice the average particle size of the particles.
[347] The concentration of particles in the cured coating can be characterized by various methods. For example, the average number density of particles in the surface area (ie, the average number of particles per unit volume or number of particles) has a value greater than the average number density in the interior area. On the other hand, the average volume fraction of the particles in the surface area (ie the volume filled by the particles / total volume) or the average weight percent per unit volume (ie the weight of particles in the cured unit volume / total volume of the cured hxld) 100% is greater than the average volume fraction or average weight percent of particles in the interior region.
[348] The concentration of the particles present in the surface area of the cured coating (characterized as above) can be determined by various surface assays well known in the art, such as transmission electron microscopy ("TEM"), surface scanning electrons as desired. It can be measured by a microscope ("X-SEM"), an atomic force microscope ("AFM"), and an X-ray photoelectron microscope.
[349] For example, the concentration of particles present in the surface area of the cured coating can be measured by cross-sectional transmission electron microscopy techniques. Useful transmission electron microscopes can generally be disclosed as follows. The coating composition is applied to the substrate and cured under conditions suitable for the composition and the substrate. A sample of the cured coating is then removed from the substrate or delaminated and embedded in the cured epoxy resin using techniques well known in the art. The planted sample can then be microtomized at room temperature by forming techniques well known in the art, for example, block faces. The sections can be cut using a 45 ° diamond blade mounted in a holder with a "boat cavity" for holding water. During the cutting process, the sections float on the water surface in the boat cavity. When some samples reach a light gold to dark gold interference color (about 100 to 150 nanometers thick), each sample is typically collected on a pomba-carbon coated grid and dried to room temperature on a glass slide. The samples are then placed in a suitable transmission electron microscope, for example Philips CM12 TEM, and observed for documenting the particle concentration on the surface area via an electron microscope at various magnifications, for example 105,000 × magnification. The concentration of particles in the surface area of the cured coating can be confirmed by visual inspection of the electron microscope, and an embodiment of such an electron microscope is disclosed in FIG. 4.
[350] The particles may of course be present in the surface area such that some of the particles at least partially protrude above the cured coating surface (essentially not protected by the organic coating layer). On the other hand, the particles may be present in the surface region such that the organic coating layer is located between the particles and the exposed air-surface interface of the surface region.
[351] In some embodiments, the cured compositions or coatings of the present invention may have a 20 ° gloss (20 ° NOVO-GLOSS 20 statistical glossmeter available from Gardner Instrument Company) that is at least 70, may be at least 75, and is often at least 80. Measured using). The high gloss composition is curable under ambient or thermal conditions or by irradiation curing techniques, for example by actinic radiation. In one embodiment, the high gloss composition is curable by ambient or thermal conditions.
[352] Moreover, the cured top coat can exhibit excellent initial scratch resistance as well as scratch resistance after weathering. The cured top coat retains at least 50% of the initial 20 ° gloss after a scratch test, in some cases at least 60% of the initial 20 ° gloss, and in other cases at least 70% of the initial 20 ° gloss. Initial scratch resistance value (i.e. 100% x scratched gloss / initial gloss) to ensure that it remains after abrasion of the coating surface (the initial 20 ° gloss is measured as described above first, and the hardened coating surface is atlas electrified. Using a Atlas AATCC Scratch Tester Model CM-5 available from Trial Devices Co., Ltd., CM-5, it was rubbed linearly 10 times with weighed sandpaper and measured 20 ° gloss as described above for the worn surface. By measuring).
[353] In addition, the cured top coat of the present invention is a Q Panel Company (Q Panel Company) which has a scratch-resistant (non-scratched) test panel after weathering that allows at least 50% of the initial 20 ° gloss to be retained after weathering for 250 hours. Weathering simulated by applying QUV exposure to UVA-340 bulbs in a weathering cabinet available from the company, measured using the scratch test method described above). In another embodiment, at least 60% of the initial 20 ° gloss, often at least 70% of the initial 20 ° gloss, is retained after 250 hours of weathering.
[354] It may be useful to use the cured composition of the present invention as a transparent top coat (transparent coating) in a cured multicomponent composite coating comprising a top coat deposited from a colored coating composition and a top coat deposited from a top coat coating composition. . When used as such, the cured top coat may be deposited from any of the top coats described above, including particles (in some cases having a particle size in the range of 1 to 1000 nanometers prior to bonding to the coating composition). Of course, whether the haze is too large depends on the size, composition and size of the particles.
[355] In yet another embodiment of the present invention, a composition is disclosed comprising particles in a composition comprising one or more thermoplastics. As mentioned above, the concentration of particles is greater in the surface region than in the interior region. The composition can be derived from a thermoplastic resinous composition. Non-limiting examples of suitable thermoplastics include high molecular weights (ie, at least 20,000, at least 40,000, or at least 60,000 Mw), acrylic polymers, polyolefin polymers, polyamide polymers, and polyester polymers suitable for use in lacquer drying systems. do. One non-limiting example of a class of thermosets from which the composition can be derived is a fluoropolymer-acrylic copolymer such as polyvinylidene fluoride, such as KYNAR500 from Ausimont USA, Inc. And thermoplastic acrylic copolymers, such as those made from ACRYLOID B44 (65% methyl methacrylate and 35% ethyl acrylate) available from Dock Resin, Inc.
[356] In some embodiments, the cured compositions or coatings of the present invention may have a 20 ° gloss (20 ° NOVO-GLOSS 20 statistical glossmeter available from Gardner Instrument Company) that is at least 70, may be at least 75, and is often at least 80. Measured using). The high gloss composition is curable under ambient or thermal conditions or by irradiation curing techniques, for example by actinic radiation. In one embodiment, the high gloss composition is curable by ambient or thermal conditions.
[357] In another embodiment, the present invention relates to a method for including a coating on a substrate comprising any inventive composition disclosed in the above, such that the polymeric substrate or polymer coated substrate retains gloss after a predetermined period of time. The predetermined period of time may generally be six months or more and one year or more. In another embodiment, the present invention is directed to a method of revitalizing the gloss of a polymeric substrate or a polymer coated substrate, including coating any of the inventive compositions described above on the substrate.
[358] Although the present invention is illustrated by the following examples, these examples are not to be considered as limiting the invention to their details. Unless otherwise indicated, all parts and percentages throughout the specification as well as the following examples are by weight.
[359] Example A discloses a process for the production of polysiloxane polyols, which are hydrosilylation reaction products of pentasiloxane comprising silicon hydride and triketylolpropane monoallyl ether. Example B discloses a process for preparing carbamate functional group-containing polysiloxanes using the polysiloxane of Example A as a starting material. Example C discloses a process for preparing carbamate functional polysiloxanes using commercially available hydroxyl functional polysiloxanes.
[360] Examples AA, BB, CC, DD and EE disclose methods of making various silicon that are subsequently bonded to a coating composition.
[361] Examples 1-10 disclose methods for preparing single pack coating compositions containing aminoplasty curing agents.
[362] Comparative Examples 1 to 3 disclose a method for preparing a high solids coating composition used to prepare a transparent top coat in a comparative multicomponent composite coating composition. The composition of Example 1 does not include polysiloxanes and inorganic particles, and the compositions of Examples 2 and 3 do not include polysiloxanes and include inorganic particles in the form of colloidal silica dispersions.
[363] Examples 4 and 5 disclose a process for preparing the coating compositions of the present invention containing inorganic particles in the form of carbamate functional group-containing polysiloxanes and colloidal silica dispersions. Example 6 discloses a process for preparing a coating composition of the present invention containing a carbamate functional group-containing polysiloxane and inorganic particles in the form of colloidal silica in the polysiloxane. Example 7 discloses a process for preparing a coating composition that is a non-silica containing analog of Example 6. Example 8 discloses a process for preparing a coating composition containing a carbamate functional group containing siloxane different from that used in the above examples. Example 10 discloses a process for preparing the film forming compositions of the present invention containing inorganic particles in the form of fumed silica dispersions prepared by milling fumed silica in the presence of polysiloxane prior to binding to the composition.
[364] Examples 11 to 17 disclose methods for preparing coating compositions made with a two component system, ie the composition comprises a polyisocyanate curing agent added to the composition just prior to application.
[365] Comparative Example 11 discloses a method for preparing a coating composition used to prepare a transparent top coat in a multicomponent composite coating composition containing an acrylic polyol and a polyisocyanate curing agent. Comparative Example 12 discloses a process for the preparation of acid catalysts containing analogs of Comparative Example 11. Comparative Example 13 discloses an aminoplast containing the analog of Example 11, and Comparative Example 14 discloses a process for preparing an acid catalyst containing the analog of Example 13. Example 15 discloses a process for preparing the coating compositions of the invention containing both acrylic polyols, amino plasti and polyisocyanate curing agents, and polysiloxane polyols. Example 16 is an acid catalyst containing the analog of Example 15. Example 17 discloses a process for the preparation of the coating composition of the invention, in which both acrylic polyols, aminoplasts and polyisocyanate curing agents contain acid catalysts, inorganic particles in the form of colloidal silica dispersed in the polysiloxane polyols and the polysiloxane polyols. . Example 18 is an analog of Example 17, but a higher level of colloidal silica.
[366] Examples 19 and 20 disclose methods for producing the one-component and two-component coating compositions of the present invention, which are suitable for application to soluble elastomeric substrates, respectively.
[367] Example 21 discloses a process for preparing an epoxy / acid coating composition. Examples 21A and 21B disclose methods of making comparative compositions that do not contain inorganic particles, and Examples 21C-21D disclose methods of making coating compositions of the invention that contain varying amounts of inorganic particles.
[368] Examples 22A-22I disclose methods for making bicomponent coating compositions illustrating the effect of lower levels of various polysiloxanes with respect to inorganic particles in the form of colloidal silica.
[369] Example 23 discloses a process for the preparation of a transparent top coat coating composition of the invention (Examples 23A-23C) applied to each substrate and subsequently evaluated by transmission electron microscopy.
[370] Example 24 discloses a process for the preparation of the coating composition of the invention containing various polysiloxanes in the context of inorganic particles in the form of colloidal silica. The coating composition was applied to the undercoat substrate, and the load and scratch length for permeation (scratch depth) compared to similarly applied commercial bicomponent isocyanate transparencies (Comparative Examples) to determine the critical load at which coating breakage occurs. Evaluates to a function
[371] Example 25 discloses a process for preparing a coating composition of the present invention containing varying levels of polysiloxane polyols of Example A (Examples 25B-25G) with respect to various levels of inorganic particles in the form of colloidal silica.
[372] Example 26 discloses a process for the preparation of the coating composition of the invention in the form of solid particles containing surface active agents (ie powder coating compositions, Examples 26C and 26D) with respect to inorganic particles in the form of aluminum oxide. Comparative Examples 26A and 26B disclose powder compositions containing surface active agents but no aluminum oxide.
[373] Example 27 discloses a transparent top coat coating composition of the present invention.
[374] Example 28 discloses a process for the preparation of a coating composition of the present invention containing a silylated compound.
[375] Example 29 discloses a method of making a coating composition of the present invention that is cured with a dual curing system.
[376] Example 30 discloses a method of making one coating composition of the present invention.
[377] Example 31 discloses a process for preparing the coating compositions of the present invention.
[378] Polysiloxane
[379] Example A
[380] This example discloses the preparation of polysiloxane polyols, which are hydrosilylation products of pentasiloxane having an approximate degree of polymerization of 3 to 4, i.e. (Si-O) ₃ to (Si-O) ₄ . The polysiloxane polyols are prepared from a mixture of the following components:
[381]
[382] To a suitable reaction vessel equipped with means for maintaining a nitrogen blanket, sodium bicarbonate in an amount corresponding to 20-25 ppm of Charge I and total monomer solids was added at ambient conditions and the temperature was gradually increased to 75 ° C. under a nitrogen blanket. At this temperature, 5.0% of Charge II was added under stirring, followed by Charge III corresponding to 10 ppm of active platinum based on monomer solids. The reaction was then exothermic to 95 ° C, at which point the remainder of Charge II was added at a rate such that the temperature did not exceed 95 ° C. After completion of the addition, the reaction temperature was maintained at 95 ° C. and monitored for disappearance of the silicon hydride absorption band (Si—H, 2150 cm ⁻¹ ) by infrared spectroscopy.
[383] Example B
[384] This example discloses the preparation of carbamate functional polysiloxanes using the polysiloxane polyols of Example A.
[385] A suitable reaction vessel equipped with a vacuum distillation apparatus was flushed with N ₂ . To the reaction flask was added 1782.9 g of polysiloxane polyol of Example A, 5.48 g of butyl tartaric acid and 16.41 g of triphenyl phosphite. The reaction was placed under vacuum and heated to a temperature of 140 ° C. To the resulting mixture was added 665.4 g of a 38% solution of 1-methoxy-2-propyl carbamate in 1-methoxy-2-propanol over 3 hours. After completion of the addition, the temperature was increased to 150 ° C. and maintained until distillation was complete. The reaction was cooled to 90 ° C. and brought to atmospheric pressure. The resulting resin was diluted with 825.3 g of 1-methoxy-2-propanol.
[386] Example C
[387] This example discloses the preparation of carbamate functional polysiloxanes. A suitable reaction vessel equipped with a stirrer, temperature probe, distillation condenser and receiver was flushed with N ₂ . To the reaction vessel was added 291.9 g of KR-2001, 1.91 g of butyl tartaric acid and 250.4 g of xylene, which were polysiloxanes (obtained from Shin-Etsu Chemicals). The reaction mixture was heated to a temperature of 140 ° C. at which point 148.6 g of methyl carbamate was added over 1 hour. The reaction was maintained at this temperature for 3.5 hours.
[388] Silica dispersion
[389] Example AA
[390] This example discloses the preparation of a colloidal silica dispersion. The dispersion was prepared as follows:
[391] 811.9 g of a 88% acrylic polyol solution (40% hydroxy propyl acrylate, 60% butyl methacrylate) in 1-methoxy-2-propanol in a suitable reaction vessel equipped with a vacuum distillation apparatus and flushed with N ₂ ; 544.3 g of colloidal silica (obtained as ORGANOSILICASOL MT-ST from Nissan Chemical Company); 1.58 g of butyl tartaric acid and 3.18 g of triphenyl phosphite were added. The reaction was placed under vacuum and heated to a temperature of 140 ° C. To the resulting mixture was added 665.4 g of a 38% solution of 1-methoxy-2-propyl carbamate in 1-methoxy-2-propanol over 3 hours. After completion of the addition, the temperature was increased to 150 ° C. and maintained at this temperature until distillation was complete. The reaction was cooled to 90 ° C. and brought to atmospheric pressure. The resulting resin had a hydroxyl value of 80.51 and was diluted to 251.4 g of 1-methoxy-2-propanol.
[392] Example BB
[393] This example discloses a colloidal silica dispersion prepared as disclosed in Example 5 of US Pat. No. 5,853,809, prepared as follows:
[394] 858.7 g of carbamate functional resin was added to a suitable reaction vessel equipped with a stirrer and a temperature probe and flushed with N ₂ . The resin was heated to a temperature of 40 ° C. Gamma-isocyanatopropyl triethoxysilane (A1310 from OSi Specialties, a subsidiary of Witco Corporation) diluted in the resulting solution with 148.2 g of amyl acetate and 10.5 g of butanol over 20 minutes 124.4 g) was added. The temperature was maintained for 3.5 hours and the reaction was monitored for completion by infrared spectroscopy. While stirring, 60 g of the resulting resin was added to 1500 g of NALCO 1057 (obtained from Nalco Chemical Co.). The resulting mixture was heated to a temperature of 60 ° C. and maintained for 19 hours.
[395] A carbamate functional acrylic resin was prepared as follows: A suitable reaction flask equipped with a vacuum distillation apparatus was flushed with N ₂ and a solution of 88% acrylic polyol (HPA 40%, BMA 60% in 1-methoxy-2-propanol). 1670.2 g), 4.9 g butyl tartaric acid and 4.9 g triphenyl phosphite were added. The reaction was placed under vacuum and heated to a temperature of 140 ° C. To the resulting mixture was added 1263.64 g of a 38% solution of 1-methoxy-2-propyl carbamate in 1-methoxy-2-propanol over 3 hours. The resulting distillate was collected. After completion of the addition, the temperature was increased to 150 ° C. and maintained at this temperature until distillation stopped. The reaction was cooled to 90 ° C. and brought to atmospheric pressure. The resulting resin had a hydroxyl value of 34.48 and was diluted with 251.4 g of a mixture of 1-methoxy-2-propanol and 3-ethoxy ethyl propionate.
[396] Example CC
[397] This example discloses a colloidal silica dispersion prepared as follows:
[398] A suitable reaction vessel equipped with a vacuum distillation apparatus was flushed with N ₂ . To the reaction flask was added 509.6 g of polysiloxane polyol of Example A, 566.3 g of ORGANOSILICASOL MT-ST-M colloidal silica (obtained from Nissan Chemical Company), 1.57 g of butyl tartaric acid and 4.69 g of triphenyl phosphite. The reaction was placed under vacuum and heated to a temperature of 140 ° C. To the resulting mixture was added 997.9 g of a 38% solution of 1-methoxy-2-propyl carbamate in 1-methoxy-2-propanol over 3 hours. The resulting distillate was collected. After completion of the addition, the temperature was increased to 150 ° C. and maintained until distillation was complete. The reaction was cooled to 90 ° C. and brought to atmospheric pressure. The resulting dispersion was diluted with 160.8 g of 1-methoxy-2-propanol.
[399] Example DD
[400] This example discloses a colloidal silica dispersion prepared as follows:
[401] A suitable reaction vessel equipped with a vacuum distillation apparatus was flushed with N ₂ . To the reaction flask was added 150.7 g of the polysiloxane polyol of Example A and 500.4 g of ORGANOSILICASOL MT-ST-M (obtained from Nissan Chemicals), a colloidal silica. The resulting mixture was vacuum distilled at 25 ° C. for 2 hours and then diluted with 160.8 g of methyl amyl ketone.
[402] Example EE
[403] This example discloses fumed silica dispersions prepared as follows:
[404] A suitable mixing vessel was equipped with a Cowles dispersion stirrer. To the vessel were added 315.3 g of polysiloxane polyol of Example A, 451.0 g of methyl amyl ketone and 135.2 g of R812 fumed silica (obtained from Degussa Corporation). The mixture was stirred until all of the R812 silica was dispersed. The dispersion was then added to an EIGER Mill over 60 minutes to achieve a grinding fineness of 8+ Hegman.
[405] Coating composition
[406] Examples 1-10 below disclose the preparation of the coating compositions of the present invention as well as the comparative coating compositions used to prepare transparent topcoats of multicomponent composite coating compositions. Amounts shown are in parts by weight. The coating compositions were prepared from a mixture of the following ingredients.
[407]
[408] The coating compositions of Examples 1 to 10 were prepared into a one-pack coating composition by adding the ingredients in the order shown and mixing slowly.
[409] Test panel manufacture:
[410] BWB-5555 black aqueous undercoat (commercially available from Fiji Industries, Inc.) coated with ED5000, a cationic electrodepositable primer commercially available from Fiji Industries, Inc. Spray applied to panels (4 in x 12 in). The panel was prebaked for approximately 30 minutes at a temperature of 285 ° F. The coating compositions of Examples 1-10 were each applied as a transparent top coat to the underlying panel (prepared just as described above) using 6 mil drawdown rods to form a transparent top coat on the panel. The topped panels were flashed for approximately 5 minutes at ambient temperature and then thermally cured for 30 minutes at 285 ° F. The multicomponent composite coatings were tested for various physical properties including gloss, scratch resistance, hardness and haze.
[411] Examination process:
[412] The scratch resistance of the coated test panel was measured using the following method: 20 ° NOVO-GLOSS 20 statistical glossmeter from which the initial 20 ° gloss of the coated panel was available from Gardner Instrument Company Incorporated. Measured using. The scratch test can be applied to the coated panel by rubbing linearly in 10 double rubs with weighed sandpaper using the Atlas AATCC Scratch Tester Model CM-5, available from Atlas Electric Devices Co., Ltd. The panel was then rinsed with water and gently pated dry. The 20 ° gloss was measured on the scratched area of each test panel. The number recorded is the percentage of initial gloss retained after the scratch test, ie 100% x scratched gloss / initial gloss. The scratch test method described above was subjected to simulated weathering by QUV exposure to UVA-340 bulbs in a weathering cabinet available from Cue Panel Company on a test panel that was not scratched after weathering (holding scratch resistance). Measured using. The test was carried out as follows: a cycle of 8 hours at 70 ° C. followed by a cycle of 4 hours at 50 ° C. (total exposure time 100 hours). The number recorded is the percentage of initial gloss retained after retained scratch test, ie 100 × retained scratches / initial gloss.
[413] The film hardness of the multilayer composite coating was measured using a TUKON hardness tester in accordance with ASTM-D1474-92 to obtain Knoop hardness values. Larger values indicate a harder coating surface.
[414] The blurring degree or lack of film transparency of the transparent top coat was measured using a BYK Blur / Gloss device from BYK Chemical. Larger numbers indicate a greater degree of blurring or lack of transparency. The test results are shown in Table 1 below.
[415]
[416] The results reported in Table 1 above illustrate that the multicomponent composite coating compositions of the present inventions of Examples 4 to 10 provide coatings with good Knoop film hardness and good initial and retained scratch resistance after simulated weathering tests. do.
[417] Examples 11-18
[418] The following discloses the preparation of a coating composition prepared as a two-pack system, ie adding a polyisocyanate curing agent to the remaining components just prior to application. The two-pack system was prepared from a mixture of the following ingredients. The amounts indicated for each component are expressed in g gross weight.
[419]
[420]
[421] The data shown in Table 2 above illustrate that the coating compositions of Examples 15-18 of the present invention exhibited good initial and retained scratch resistance after simulated weathering tests.
[422] Example 19
[423] This example discloses the preparation of a one-component coating composition for use in the preparation of a transparent top coat in the multicomponent composite composition of the present invention suitable for application to a flexible elastomeric substrate. The film forming composition contains inorganic particles in the form of hydroxyl functional group-containing polysiloxanes and colloidal silica. The coating composition was prepared from a mixture of the following components under stirring in the order shown below:
[424]
[425] Example 20
[426] This example discloses a process for preparing a two-component coating composition for use in the preparation of a transparent top coat in the multicomponent composite composition of the present invention. The film forming composition contains inorganic particles in the form of aminoplast and polyisocyanate curing agents, hydroxyl functional-containing polysiloxanes and colloidal silica. The coating composition was prepared from a mixture of the following components under stirring in the order shown below:
[427]
[428] Test panel manufacture:
[429] 0.15 to Sequel 1440 TPO plaques (4 in x 12 in) commercially available from Standard Plaque, MPP4100D, a large solid adhesion promoter commercially available from Fiji Industries, Inc. Spray application was applied by hand to a dry film thickness of from 0.25 mils (3.8-6.4 μm). Each Sequel 1440 plaque was washed with isopropyl alcohol prior to treatment. Solvent based black undercoat CBCK8555A (used with 2K clearcoat) or CBC8555T (used with 1K clearcoat) commercially available from Fiji Industries Inc. after leaving the Sequel 1440 plaques tested above for one day. ) Was applied with a dry film thickness of 0.8-1.0 mil (20.3-25.4 μ). CBCK8555A and CBC8555T undercoats were applied to two coatings by SPRAYMATION using 90 seconds "flash-drying" at ambient temperature between each coating. After flash-drying the undercast panel for 90 seconds at ambient temperature, the transparent topcoats disclosed in Examples 19 and 20 were applied to the two coatings by SPRAYMATION using 90 seconds flashing at ambient temperature between the respective coatings. Applied. The clear top coat had a dry film thickness in the range of 1.6-1.8 mils (40.6-45.7 μm). The topped panels were flash-dried at ambient temperature for 10 minutes and then thermally cured at 254 ° F. (123.3 ° C.) for 40 minutes. The coated test panels were tested after standing for 4 days at ambient temperature.
[430] 20 ° gloss, scratch resistance, and retained scratch resistance in test panels made as described immediately above were evaluated in comparison to commercial one-pack and two-pack systems using the methods described above.
[431] The coated test panels were also tested for flexibility at 70 ° F. (21.1 ° C.). For the flexibility test, 1 inch by 4 inch pieces were cut from the coated test panel. The pieces are bent using a 2 in diameter steel mandrel to bring the two ends of the 4 in length specimen into contact with each other. The test panels were then visually inspected for coating cracks on a scale from 0 to 10 to grade for flexibility. No paint cracks were seen for the "10" grade panels. A "9" grade having less than 5 intermittent disconnection cracks; "8" has an intermittent line crack with up to four uninterrupted line cracks; "6" has 5 to 10 uninterrupted line cracks; "4" has at least 15 uninterrupted line cracks; "0" indicates fracture of the substrate.
[432] The test results are shown in Table 3 below.
[433]
[434] The data shown in Table 3 above shows the initial gloss and flexibility properties of the coating compositions of Examples 19 and 20 of the present invention similar to commercially clear coatings that do not contain silica or polysiloxane when applied to thermoplastic polyolefin (TPO) elastomeric substrates. Although provided, the scratch resistance retained compared to the above exemplifies excellence.
[435] Example 21
[436] This example discloses the preparation of an epoxy / acid coating composition containing functional group containing polysiloxanes and inorganic particles in colloidal form at levels of less than 1% based on the total weight of the resin solids of the composition. The coating composition was prepared from a mixture of the following ingredients:
[437]
[438] The black coating film (OBISIDIAN SCHWARTZ undercoat available from Fiji Industries, Inc.), which was previously applied to the test panel and cured for 30 minutes at 285 ° F. (140.6 ° C.) Applied on top. The clear coating composition of each example was lowered onto the cured undercoat using a 6 mil square drawdown rod and cured at 285 ° F. (140.6 ° C.) for 30 minutes.
[439]
[440] The data shown in Table 4 above illustrate that the coating compositions of Examples 21C-21E of the present invention provide superior initial and retained scratch resistance compared to comparative examples that do not contain inorganic particles or polysiloxanes.
[441] Example 22
[442] This example discloses the preparation of two-component coating compositions 22A-22I illustrating the effect of lower (ie, <2% by weight) levels of polysiloxanes. Comparative Examples 22A and 22B contain 0% colloidal silica / 0% polysiloxane and 2% colloidal silica / 0% polysiloxane, respectively. Examples 22C-22I disclose coating compositions containing 2% by weight of polysiloxane, respectively.
[443] Evaluated Polysiloxanes
[444]
[445] Coating composition
[446] The undercoat composition was prepared from a mixture of the following ingredients:
[447]
[448] The coating compositions of Examples 22A-22I, respectively, were prepared by adding the following weight percent colloidal silica and polysiloxane components to 178.8 g of the coating composition disclosed immediately above. The coating composition prepared as above was applied and tested as described above for Examples 1-18.
[449]
[450] The data reported above show that the coating composition of Example 22C of the present invention, which contains very low levels of polysiloxane polyols of Example A with inorganic particles in the form of colloidal silica, has excellent initial scratch resistance (scratch resistance). Example) Moreover, the data illustrate that the inorganic particles and polysiloxane polyols act synergistically to provide excellent retained scratch resistance.
[451] Example 23
[452] This example discloses the preparation of a clear top coat coating composition, which was subsequently applied and cured to evaluate using transmission electron microscope surface characterization techniques. Example 23A discloses the preparation of a transparent topcoat composition of the invention containing inorganic particles in the form of colloidal silica with the polysiloxane polyol of Example A, wherein the compounds are all added as separate components. Comparative Example 23B discloses the preparation of comparative transparent top coat compositions that contain inorganic particles in the form of colloidal silica but do not contain polysiloxanes. Example 23C discloses the preparation of a transparent top coat composition of the present invention wherein inorganic particles in the form of colloidal silica are dispersed in the polysiloxane polyol of Example A prior to incorporation into the composition.
[453] Each coating composition was prepared as follows.
[454] Example 23A
[455]
[456] Example 23B
[457]
[458] Example 23C
[459]
[460] Test Panel Preparation for Example 23A and Example 23B
[461] SMARAGDSCHWARZ MICA, a black undercoat available from Fiji (B & K), was used to commercialize ED-5000 electrocoat primers and GPXH-5379 primer surfaces (all of which are commercially available from Fiji Industries Inc.) using SPRAYMATION. Spray test was applied to steel test panels (4 " x12 " panels, commercially available from ACT Laboratories, Inc.) coated with available). The undercoat was applied to two coatings, without flashing between the coatings and then heat flashed at 200 ° F. for 5 minutes before applying the transparent coating. The undercoat had a dry film thickness of 0.47 mils (11.75 μm). The coating compositions of Examples 23A and 23B were spray applied to the cured undercoat of two coatings with a 60-second flashing between the coatings, followed by flashing at ambient temperature for 5 minutes, followed by 285 ° F. (140.6 ° C.). Cured at 30 minutes. Each clear coat had a dry film thickness of approximately 2.1 mils (54.5 μm).
[462] Test Panel Preparation for Example 23C
[463] OBSIDIAN SCHWARZ, a black undercoat available from Fiji (B & K), was spray applied and cured as described immediately above for Examples 23A and 23B. The coating composition of Example 23C was applied to the undercoat and cured as a clearcoat using the procedure described above for the clearcoats of Examples 23A and 23B. The undercoat had a dry film thickness of 0.5 mils (12.5 μm) and the transparent coat had a dry film thickness of 1.44 mils (36 μm).
[464] Transmission electron microscopy for cross sections:
[465] The cured coating sample was delaminated from the substrate and buried in epoxy using an EPONATE 812 epoxy investment kit available from Ted Pella's Inc. in a polyester cap closure mold. Once thermally cured, the samples were withdrawn from the mold and cut to a size of approximately 1.5 cm x 1 cm using a specially fine X-ACTO laser saw (# 75350). Samples of this size were then sliced using an RMC MY6000XL flake cutter using a vice clamp specimen holder at ambient temperature. The flake cut sections were cut using a 45 ° diamond knife blade loaded into a holder having a boat-shaped cavity filled with water. The cuts were made from light gold to dark gold (approximately 100 nm to 150 nm) of interference color, and then individual cut specimens were collected on a TEM formbar-carbon coated grid. Excess water was removed using filter paper and the thin sections were air dried at ambient temperature on a glass microscope slide. The sections were sorted by interference color concentration. The coated specimens were oriented on the glass slide inclined with respect to the axis such that a vertical cross section could be observed. Samples were placed on a Philips CM12 TEM operating at 100 KV acceleration voltage in transmission mode using standard tungsten filaments and visually inspected at various magnifications to record coating surface morphology and particle concentration. Kodak SO-163 electron image film was used to generate electron micrograph negatives and the negatives were subsequently developed.
[466] FIG. 1 is an electron micrograph (30,000-fold magnification) of a transmissive electron microscope of the cross section of the cured transparent top coat composition of Example 23A containing both colloidal silica and polysiloxane added as separate components. Upon visual inspection, it is present in the surface area of the cured composition, i.e. from the exposed air surface interface 1a to the cured coating depth of 20-50 nm (1 mm = about 30 nm) below the exposed surface. It can be seen that the particle concentration in the form of colloidal silica (1b) is greater than the concentration of colloidal silica (1c) present in the bulk region of the cured composition. It should also be noted that the particles (1b) and (1c) are present as aggregates in the polymer matrix rather than as separate monodisperse particles.
[467] FIG. 2 is an electron micrograph (30,000-fold magnification) on a transmission electron microscope of a cross section of a comparative cured transparent top coat coating composition of Example 23B containing colloidal silica but no polysiloxane. Upon visual inspection, the surface area of the comparative cured composition, i.e., extends from the exposed air surface interface 2a to a cured coating depth of 20-50 nm (1 mm = about 30 nm) below the exposed surface. It can be seen that the concentration of inorganic particles in the form of colloidal silica (2b) present in the cured region is lower than the concentration of colloidal silica (2c) present in the bulk region of the cured composition. Indeed, the colloidal silica observed in this surface area is essentially free. It should also be noted that the particles (2b) and (2c) are present as agglomerates in the polymer matrix rather than as separate monodisperse particles.
[468] FIG. 3 is an electron micrograph on a transmission electron microscope of a cross-section of the cured transparent top coat coating composition of Example 23A (see FIG. 1), magnified 54,000 times.
[469] FIG. 4 is an electron micrograph (105,000 times magnification) of a transmissive electron microscope of a cross section of a preferred cured transparent top coat composition of the present invention containing a preformed dispersion of colloidal silica and polysiloxane. In the visual inspection, in the form of colloidal silica 4b present in the surface region of the cured composition, i.e. from the exposed air surface interface 2a to the cured coating depth of 20-50 nm below the exposed surface. It can be clearly seen that the particle concentration is higher than the concentration of colloidal silica 4c present in the bulk region of the cured composition. It should also be noted that the particles 4b and 4c exist as separate monodisperse particles distributed in the polymer matrix rather than as aggregated particles (compare FIGS. 1 and 2).
[470] Example 24
[471] The coating composition of the present invention containing inorganic particles in the form of colloidal silica predispersed in functional group-containing polysiloxane in this example is compared with commercial two-component isocyanate clear films for coating penetration (scratch depth) as a function of load and scratch distance. Evaluated.
[472] Example 24A
[473] Coating compositions of the present invention were prepared from a mixture of the following ingredients:
[474]
[475] Example 24B
[476] Black aqueous undercoats were prepared from mixtures of the following components:
[477]
[478] Test panel manufacture:
[479] Steel-based test panels (available from ACT Laboratories Inc.) were coated with ED-5000 electrocoat primer (available from Fiji Industries Inc.). The undercoating of Example 24B was spray applied to the primitive coating panels of two successive coatings without a flashing period between the coatings. The primer panels were flash-heated for 5 minutes at 200 ° F. prior to application of the clear coat. The undercoat dry film thickness was 0.4 mil (10 μm). The coating composition of Example 24A and a commercial two-component clearcoat (TKU-1050, available from Fiji Industries, Inc.) were applied to the downcast panels of two coats for 60 seconds between the coats. Spray application using flashing followed by flashing for 10 minutes at ambient temperature followed by curing for 30 minutes at 285 ° F. (140.6 ° C.). The clearcoat dry film thickness was 1.6 mils (40 μm) for each sample.
[480] Test panels made as described above were tested by MTS Corporation (Oak Ridge) for surface penetration (or scratch depth) as a function of applied load at a given speed for a given distance. Using a conventional load ramp of 1000 μN / s with a maximum load of 25 mN for a scratch length of 500 μm, a Nano Indenter XP system using a cube corner indenter at a scratch rate of 20 / s is used. Used.
[481] 5 is a graph (scratch depth vs. scratch distance) of coating surface penetration versus load of a commercial two-component polyurethane coating (comparative example) using the nano-indenter technique described above. The critical load measured for the composition is 5.62 mN. The term "critical load" as used herein is defined from the onset of destructive cracking, ie breakage of the coating.
[482] FIG. 6 is a graph of coating surface penetration (scratch depth vs. scratch distance) versus load of the two-component coating of Example 24A of the present invention using the nano-indenter technique described above. The critical load measured for the composition of the present invention is 11.74. The coating composition of the present invention required greater force to cause coating failure than the commercial control under the same test conditions.
[483] Example 25
[484] This example discloses the preparation of a series of coating compositions of the present invention (Examples 25B-25G) containing increasing amounts of particles in the form of colloids. Comparative Example 25A discloses a coating composition containing no particles. The test results in Table 5 below illustrate the effect of silica blending on retained scratch resistance of the cured coating composition.
[485] Inorganic Particle-Free Coating Composition
[486] The coating composition was prepared with the following components, namely 35.9 wt% of the acrylic polyol of Example 23C; DESMODUR N-3300 29.1 wt%; 20% by weight of siloxane polyol of Example A (this amount includes siloxane polyols incorporated in the form of silica dispersions); 15 wt% CYMEL 202; TINUVIN 98 3 weight percent; 0.3 weight percent polybutyl acrylate flow additive and 0.5 weight percent catalyst of Example 12, wherein the weight percent was based on the weight of the total resin solids of the components forming the coating composition, were slowly mixed with stirring. . The particles were incorporated into the composition just disclosed in the form of the colloidal silica dispersion of Example 19 in the range of 0 to 8.5% by weight.
[487] The compositions of Examples 25A-25G were applied to the test panel described above for Example 24. The coated panels were subsequently tested for initial and retained scratch resistance as described above. The test results are shown in Table 5 below.
[488]
[489] The test data shown in Table 5 above illustrates a significant improvement in retained scratch resistance obtained by incorporating much lower levels (eg 0.25%) of silica in the coating composition of the present invention. Moreover, the data shows that the initial and retained scratch resistance results obtained using coating compositions with low levels of silica (ie, 2.0% or less) are similar to those obtained using coating compositions with higher levels of silica. To illustrate.
[490] 7 and 8 are electron micrographs on a transmissive electron microscope (105,000 times magnification) for the cross section of the coating composition according to Example 25E, and FIGS. 9 and 10 are transmissive electron microscopes for the cross section of the coating composition according to Example 25G An electron micrograph of a phase (105,000 times magnification).
[491] Example 26
[492] This example discloses the preparation of a plurality of coating compositions (Examples 26B-26D) of the present invention in solid particulate form. The compositions of Examples 26C and 26D contain inorganic particles in the form of aluminum oxide. In the composition of Example 26C, the aluminum oxide particles were dispersed in a surface active agent, and in the composition of Example 26D, the aluminum oxide particles were dispersed in the polysiloxane polyol of Example A. The compositions of Comparative Examples 26A and 26B each contained a surface active agent but no aluminum oxide. The compositions were respectively blended for 60 to 90 seconds in a Henschel blender with the components listed below and subsequently the mixture was screwed at 450 rpm and 100 to 100 rpm in a Werner & Pfleiderer idle twin screw extruder. Prepared by extruding at an extrusion temperature of 125 ° C. (212-257 ° F.). Each of the extruded compositions was then ground to a particle size of 14 to 27 μ using an ACM mill (air sorting mill from Micron Powder Systems, Summit, NJ) to prepare a powder coating composition. Each powder coating composition was electrostatically spray applied to test the panels and evaluate for scratch resistance (discussed below). The amounts shown below are parts by weight.
[493]
[494] The powder coating compositions of Examples 26A-26D were electrostatically spray applied to test panels previously coated with electrodepositable primers (commercially available as ED5051 from Fiji Industries, Inc., Pittsburgh, Pennsylvania). The powder coating composition was applied to a film thickness of 2.3 to 2.8 mils (58 to 71 μm) and cured for 30 minutes at a temperature of 293 ° F. (145 ° C.). The resulting coated panels were evaluated for initial 20 ° gloss as described above. The coated panels were then tested for scratch resistance using an atlas scratch tester and the procedure below. Using a felt cloth clamped to the acrylic finger on the arm of the device, each coated panel to which the BON AMI cleaner was applied was rubbed twice in duplicate. Each of the panels tested was washed with cold tap water and completely dried. The scratched surface of each test panel was then reevaluated for 20 ° gloss. The scratch resistance test results are shown as a percentage of the 20 ° gloss retained after surface scratches. Ie scratch resistance (scratch resistance) = (scratched 20 ° gloss / initial 20 ° gloss) × 100. The test data shown in Table 6 below is recorded in comparative form. That is, the results for Examples 26B to 26D are compared with the test results for the control composition of Example 26A. "+" Indicates improved scratch resistance (scratch resistance) compared to the control composition.
[495]
[496] The scratch resistance test data shown in Table 6 illustrates the improvement of scratch resistance (scratch resistance) provided by the particles incorporated into the powder coating composition in the form of aluminum oxide particles.
[497] Example 27
[498] Coating compositions of the present invention were prepared from a mixture of the following ingredients:
[499]
[500] Azuritblau, a undercoat available from B & K's pocket, was applied to the primed steel automotive substrate. The undercoat was formed to a film thickness in the range of 12-15 μm, followed by heat flashing at 80 ° C. for 5 minutes to apply the coating composition of Example 27. The coating composition of Example 27 was wet-on-wet spray applied to the undercoat to form a transparent coating having a film thickness in the range of 35 to 45 μ. The coating was then cured at 130 ° C. for 30 minutes.
[501] Example 28
[502] The silylated compounds for use in the coating compositions disclosed below were prepared as follows:
[503] Silylated Compound A
[504] This example illustrates the preparation of a silylated compound that is a semi-acid ester of methyl hexahydrophthalic anhydride and trimethylolpropane with carboxyl group residues reacted with propylene oxide.
[505] 1202.9 g of trimethylolpropane (commercially available from Bayer USA) with a stirrer, thermocouple, thermostat, pump and port with valve, triphenyl phosphine (Aldrich®) Commercially available from 14.4 g), triisooctyl phosphite (commercially available from GE Specialty Chemicals) and n-butyl acetate (Union Carbide Chemicals & Plastics Co., Inc.) Commercially available from Foretide).
[506] The reactor was heated to 115 ° C. and 4436.7 g of methylhexahydrophthalic anhydride (commercially available from Milliken Chemical) were added over 90 minutes and then maintained at 115 ° C. for 4 hours. 1533.4 g of propylene oxide (commercially available from Fisher Scientific Company) was charged to the reactor over 1 hour. The reaction was maintained for 4 hours until the acid number was less than 5.38 mg / g KOH. Residual propylene oxide was removed by vacuum distillation at 60-80 mmHg at up to 96 ° C. The resulting product had a total solids content of 95.25%.
[507] The product was silylated according to the following procedure: 637.6 g (95.25% solids) of the material described above were charged to a reaction flask equipped with an overhead stirrer, nitrogen inlet, thermocouple, addition funnel and condenser. The system was reliably dried by increasing the temperature to 110 ° C. by nitrogen sparging for 1 hour. The temperature was then reduced to 85 ° C. under a nitrogen blanket, at which point 180.9 g of hexamethyldisilazane (commercially available from Aldrich®) was added dropwise over 30 minutes. The reaction was continued for an additional hour, at which point nitrogen was sparged. The reaction was considered complete when the size of the IR peak corresponding to the hydroxyl residue was negligible. The solution was continuously stirred under nitrogen sparging at 85 ° C. until ammonia (byproduct) was removed. Theoretical resin solids content was 96.3%.
[508] Silylated compound B
[509] This example illustrates the preparation of a silylated compound that is a semi-acid ester of methyl hexahydrophthalic anhydride and trimethylolpropane with carboxyl group residues reacted with propylene oxide.
[510] A reaction vessel equipped with a stirrer, thermocouple, thermostat, pump and a port with a valve is 550.0 g of trimethylolpropane (commercially available from Bayer USA), triphenyl phosphine (Aldrich®) commercially 6.8 g, triisooctyl phosphite (commercially available from GE Specialty Chemicals) and n-butyl acetate (commercially available from Union Carbide Chemicals and Plastics Company Incorporated) Can be charged) 205.7 g. The reactor was heated to 115 ° C. and 2030 g of methylhexahydrophthalic anhydride (commercially available from Milliken Chemical) were added over 90 minutes and then held at 115 ° C. for 4 hours. The reactor was cooled to 100 ° C. and 769.9 g of propylene oxide (commercially available from Fisher Scientific Co.) was added to the reactor over 1 hour. The reaction was maintained at 100 ° C. for 5 hours until the acid value was 3.1 mg / g KOH. Residual propylene oxide was removed by vacuum distillation at 70 ° C. at 60-80 mmHg. The resulting product had a total solids content of 95.08%.
[511] The product was silylated according to the following procedure: 3449.3 g (80.0% solids) of the material described above were charged to a reaction flask equipped with an overhead stirrer, nitrogen inlet, thermocouple, addition funnel and condenser. The system was reliably dried by increasing the temperature to 110 ° C. by nitrogen sparging for 1 hour. The temperature was then reduced to 85 ° C. under a nitrogen blanket, at which point 821.9 g of hexamethyldisilazane (commercially available from Aldrich®) was added dropwise over 1 hour. The reaction was continued for an additional 15 hours at which point nitrogen was sparged. The reaction was considered complete when the size of the IR peak corresponding to the hydroxyl residue was negligible. The solution was continuously stirred under nitrogen sparging at 85 ° C. until ammonia (byproduct) was removed. Theoretical resin solids content was 96.3%.
[512] Silica dispersions, polysiloxane polyols and composition premixes for use in the coating compositions disclosed below were prepared as follows:
[513] Silica dispersion
[514] Colloidal silica dispersions were prepared from batches of scaled-up silica dispersions of Example 23C.
[515] Polysiloxane polyols
[516] Polysiloxane polyols are hydrosilylation products of reactive silicone fluids having an approximate degree of polymerization of 3 to 7, i.e., (Si-O) ₃ to (Si-O) ₇ . The polysiloxane polyols were prepared from proportionally scaled up batches of the components in the proportions indicated below:
[517]
[518] To a suitable reaction vessel equipped with means for maintaining a nitrogen blanket, sodium bicarbonate in an amount corresponding to 20-25 ppm of Charge I and total monomer solids was added at ambient conditions and the temperature was gradually increased to 75 ° C. under a nitrogen blanket. At this temperature, 5.0% of Charge II was added under stirring, followed by Charge III corresponding to 10 ppm of active platinum based on total monomer solids. The reaction was then exothermic to 95 ° C. at which point the remainder of Charge II was added at a rate such that the temperature did not exceed 95 ° C. After completion of the addition, the reaction temperature was maintained at 95 ° C. and monitored for disappearance of the silicon hydride absorption band (Si—H, 2150 cm ⁻¹ ) by infrared spectroscopy.
[519] Composition premix
[520] A premix of selected components of the coating composition discussed below was prepared by sequentially mixing the respective components with stirring.
[521] Preliminary Mixture 1:
[522]
[523] Preliminary Mixture 2:
[524]
[525] Preliminary Mixture 3:
[526]
[527] Preliminary Mixture 4:
[528]
[529] Premixes of components from premixes 1, 2, 3 and 4 were used in coating compositions 5-16. The components for the preparation of coating compositions 5-16 are shown in Tables 7-9 below. The amounts shown are in parts by weight in g and the amounts in parentheses are in weight percent based on the total weight of the resin solids of the components forming the composition. Each component was mixed sequentially with stirring.
[530]
[531]
[532]
[533] exam
[534] Coating compositions 5-16 were spray applied onto the colored undercoat to form a color + transparent composite coating on the primed electrocoated steel panel. The panels used were cold rolled steel panels (size 4 in x 12 in (10.16 cm x 30.48 cm) coated with ED5100 electrical coating and PCV70100M primer (all of which are available from Fiji Industries, Inc.). Was. The test panel is available as APR30471 from ACT Laboratories, Inc. (Hillsdale, Michigan).
[535] Coating compositions 5-9 were prepared in two different undercoats: HWB9517 (black colored aqueous acrylic / melamine undercoat commercially available from Fiji Industries, Inc.) and undercoat X (black colored aqueous acrylic). / Melamine undercoat) (combination to the above is provided below). Coating compositions 10-16 were evaluated for undercoat X.
[536] Undercoat X
[537]
[538] Two undercoat coatings were automatically spray applied to an electrocoated and primed steel panel at ambient temperature (70 ° F. (21 ° C.)). There was no flashing treatment between the application of the two undercoat layers. The total dry film thickness of the undercoat in the range of 0.5 to 0.7 mils (13 to 17 μm) was aimed. After applying the second undercoat, the undercoat was forced to flash after 1-10 minutes of air flashing at ambient temperature. For panels coated with HWB9517, the forced flashing was performed at 200 ° F. (93 ° C.) for 10 minutes. Panels coated with undercoat X were forcibly flashed at 200 ° F. (93 ° C.) for 5 minutes. Coating compositions 5-16 were each automatically spray applied at ambient temperature while flashing 90 seconds at ambient temperature between the coatings in the two panels of coated film at ambient temperature. The entire transparent coating was applied with a dry film thickness of 1.6-1.8 mils (41-46 μm). All coatings were air flashed at ambient temperature for 10 minutes. Panels prepared from each coating were baked at 285 ° F. (141 ° C.) for 30 minutes to completely cure the coating (s). The panels were fired to a horizontal position.
[539] For recoating, each panel was coated with another undercoat, a clear coat layer or a clear coat sole layer, as shown below. Examples 5-9 were recoated with HWB9517 or undercoat X and coating compositions 5-9 according to each original panel. Examples 10-16 were again coated with undercoat X and coating compositions 10-16 according to each original panel. For example, coating composition 5 (prepared above) on the original HWB9517 was recoated with HWB9517 and coating composition 5 transparent coatings. Half of the original panels from Examples 5-16 were topped and topped and The other half was coated with only a clear coating. In order to re-coat the panel, half of the bottom of the original panel was covered with aluminum foil, and then the respective undercoats were automatically spray applied as described above. The foil was removed, resulting in an original panel with the top half coated with the undercoat and the bottom half still having only the original coating layer. The panels were forced flashed as described above. Each transparent coating was then automatically spray applied to the entire panel as described above. The resulting panel was half coated with the undercoat / transparent film from the original spray application and another undercoat / transparent film layer (B / C // B / C) from the recoated spray application. The other half of the resulting panel was coated with a undercoat / transparent coating from the original spray application and another transparent coating layer (B / C // C) from the recoated spray application.
[540] Table 10 shows the properties of the coating materials for Examples 5-9 for the HWB9517 undercoat and for Examples 5-16 for the undercoat X in Table 11 below.
[541]
[542]
[543] Example 29
[544] Dual curing (ultraviolet and thermal curing) coating compositions were prepared and evaluated as discussed below.
[545] Coating compositions were prepared by adding the respective components under stirring in the order shown in the table below. Acrylic polyol and isocyanurate were preblended and then added to the other ingredients.
[546]
[547] The coating composition was applied to a pretreated and undercoated panel as described below. The panel used was a cold rolled steel panel (size 4 in x 12 in (10.16 cm x 30.48 cm) coated with an ED5000 electrical coating (available from Fiji Industries, Inc.). The test panel is available from ACT Laboratories, Inc. (Hillsdale, Michigan). The undercoat (BWB-8555 black aqueous undercoat available from Fiji Industries, Inc.) was spray applied to a thickness of 0.6 mil (15 μm) dry film and completely baked at 285 ° F. (141 ° C.) for 30 minutes. . The coating composition of the present invention was applied on the undercoat with a dry film thickness of approximately 1.0 to 1.2 mils (26 to 31 μm) using a 7 mil (179 μm) drawdown rod. The transparent coating was flashed at ambient temperature (25 ° C.) for 5 minutes and then cured using ultraviolet light of 576 mJ / cm 2 at a linear speed of 70 ft / min (21.3 m / min) and then 30 at 285 ° F. (141 ° C.). Heat cured for minutes.
[548] The coating on the panel was evaluated for scratch resistance as follows. 20 ° gloss was measured using a statistical Novo-Gloss 20 ° glossmeter (available from Paul En Gardner, Inc.). The scratch test can be applied to the coated substrate by rubbing linearly in 10 double rubs with weighed sandpaper using the Atlas AATCC Scratch Tester Model CM-5, available from Atlas Electrical Devices Co., Ltd. The sandpaper is a 3M 281Q WETORDRY ^™ PRODUCTION ^™ 9 micron abrasive paper sheet (available from 3M Company, St. Paul, MN). The panels are then rinsed with tap water and gently pated with a paper towel to dry. 20 ° gloss is measured on the scratched area of each test panel (using the same glossmeter as used for the initial 20 ° gloss). Using the lowest 20 ° gloss read from the scratched area, the scratch results are recorded as the percentage of initial gloss retained after the scratch test, ie 100% x scratched gloss / initial gloss. Larger values are preferred for the percentage of gloss retained.
[549] The test results are shown in Table 12 below.
[550]
[551] Example 30
[552] Polysiloxane polyols, which are hydrosilylation products of reactive silicone fluids with approximate degrees of polymerization of 3 to 7, i.e. (Si-O) ₃ to (Si-O) ₇ , were prepared. The polysiloxane polyols were prepared from proportionally scaled up batches of the components in the proportions indicated below:
[553]
[554] To a suitable reaction vessel equipped with means for maintaining a nitrogen blanket, sodium bicarbonate in an amount corresponding to 20-25 ppm of Charge I and total monomer solids was added at ambient conditions and the temperature was gradually increased to 75 ° C. under a nitrogen blanket. At this temperature, 5.0% of Charge II was added under stirring, followed by Charge III corresponding to 10 ppm of active platinum based on total monomer solids. The reaction was then exothermic to 95 ° C, at which point the remainder of Charge II was added at a rate such that the temperature did not exceed 95 ° C. After completion of the addition, the reaction temperature was maintained at 95 ° C. and monitored for disappearance of the silicon hydride absorption band (Si—H, 2150 cm ⁻¹ ) by infrared spectroscopy.
[555] Silica dispersion AA
[556] Colloidal silica dispersions were prepared as follows. A four-necked reaction flask equipped with a vacuum distillation apparatus was flushed with N ₂ . To the reaction flask was added 1500.9 g of the polysiloxane polyol described above, 3751.1 g of the colloidal silica ORGANOSILICASOL MT-ST (commercially available from Nissan Chemicals), and 960.4 g of methyl amyl ketone. The resulting mixture was vacuum distilled at 70 mmHg and 31 ° C.
[557] Film forming composition
[558] Formulation Premix: (each component was mixed sequentially with stirring)
[559] Example 1 (99-346-91A)
[560]
[561] A premix of the components from Example 1 was used in Examples 2 and 3. The compositions for Examples 2 and 3 are shown in Table 1 below. The amounts shown are in parts by weight in g and the amounts in parentheses are in weight percent based on the weight of the resin solids. Each component was mixed sequentially with stirring.
[562]
[563] exam
[564] The film forming compositions of Examples 2 and 3 were spray applied onto the colored undercoat to form a color + transparent composite coating on the primed electrocoated steel panel. The panels used were cold rolled steel panels (size 4 in x 12 in (10.16 cm x 30.48 cm) coated with ED5100 electrical coating and PCV70100M primer (all of which are available from Fiji Industries, Inc.). Was. The test panel is available as APR30471 from ACT Laboratories, Inc. (Hillsdale, Michigan).
[565] A black colored aqueous acrylic / melamine undercoat (Subcoat Z) available from Fiji Industries, Inc. was used. The formulation with respect to the undercoat Z is shown below.
[566] Undercoat Z
[567]
[568] The undercoats were automatically spray applied to an electrocoated and primed steel panel at ambient temperature (70 ° F. (21 ° C.)). There was no flashing treatment between the application of the two undercoat layers. It was aimed at a total dry film thickness of 0.66 mils (17 μm). After applying the second undercoat, the undercoat was forced to flash after 1-10 minutes of air flashing at ambient temperature. The forced flashing was performed at 200 ° F. (93 ° C.) for 5 minutes. The transparent coating compositions of Examples 2 and 3 were respectively autosprayed at ambient temperature while flashing 90 seconds at ambient temperature between the coatings to the two coated film panels at ambient temperature. The entire transparent coating was applied to a dry film thickness of 1.78 mils (45 μm). All coatings were air flashed at ambient temperature for 10 minutes. Panels prepared from each coating were baked at 285 ° F. (141 ° C.) for 30 minutes to completely cure the coating (s). The panels were fired to a horizontal position.
[569] Properties for the coating material are shown in Table 14 below.
[570]
[571] Example 31
[572] Coating compositions of the present invention were prepared from a mixture of the following ingredients:
[573]
[574] Coating compositions of the present invention were also prepared from a mixture of the following components:
[575]
[576] The compositions of the present invention have various advantages for coating applications, including but not limited to good initial and retained scratch resistance, good appearance properties such as gloss and clarity, and physical properties such as good flexibility and weather resistance. Can be provided.
[577] Those skilled in the art will appreciate that changes can be made to the above-described embodiments without departing from the broad concept of the invention. Thus, although the invention is not limited to the specific embodiments described above, it is, of course, intended to cover modifications within the spirit and scope of the invention as defined by the appended claims.

权利要求:
Claims (133)
[1" claim-type="Currently amended] (a) one or more polysiloxanes comprising one or more reactive functional groups;
(b) at least one reactant comprising at least one reactive functional group of said at least one polysiloxane and at least one functional group reactive with at least one functional group selected from at least one functional group of at least one reactant; And
(c) a plurality of particles selected from inorganic particles, composite particles, and mixtures thereof
A composition prepared from components, wherein each component is different and at least one reactive functional group of the at least one polysiloxane is substantially non-reactive with the particles.
[2" claim-type="Currently amended] The method of claim 1, wherein each one or more reactive functional groups of the one or more polysiloxanes may be the same or different and include hydroxyl groups, carboxyl groups, isocyanate groups, protected polyisocyanate groups, primary amine groups, secondary amine groups , Amide group, carbamate group, urea group, urethane group, vinyl group, unsaturated ester group, maleimide group, fumarate group, anhydride group, hydroxy alkylamide group, and epoxy group.
[3" claim-type="Currently amended] The composition of claim 1, wherein said at least one polysiloxane comprises two or more reactive functional groups.
[4" claim-type="Currently amended] The method of claim 1, wherein at least one reactive functional group of each of the at least one polysiloxanes may be the same or different and at least one reactive functional group selected from hydroxyl groups, carbamate groups, epoxy groups, carboxyl groups, and carbamate groups. Composition comprising a.
[5" claim-type="Currently amended] The composition of claim 4, wherein each one or more reactive functional groups of the one or more polysiloxanes may be the same or different and comprise two or more reactive functional groups selected from hydroxyl groups, and carbamate groups.
[6" claim-type="Currently amended] The composition of claim 4, wherein each one or more reactive functional groups of the one or more polysiloxanes may be the same or different and comprise an oxyalkylene group and two or more hydroxyl groups.
[7" claim-type="Currently amended] The composition of claim 1, wherein the one or more polysiloxanes are present in the composition in an amount ranging from 0.01 to 90 weight percent, based on the total weight of the resin solids of the components that form the composition when added to other components of the composition. Composition.
[8" claim-type="Currently amended] 8. The composition of claim 7, wherein said at least one polysiloxane is present in an amount of at least 2% by weight.
[9" claim-type="Currently amended] 9. The composition of claim 8, wherein said at least one polysiloxane is present in an amount of at least 5% by weight.
[10" claim-type="Currently amended] 10. The composition of claim 9, wherein said at least one polysiloxane is present in an amount of at least 10% by weight.
[11" claim-type="Currently amended] The method of claim 1, wherein the particles are fumed silica, amorphous silica, colloidal silica, alumina, colloidal alumina, titanium dioxide, cesium oxide, yttrium oxide, colloidal yttria, zirconia, colloidal zirconia, and any mixture of the above materials. Composition selected.
[12" claim-type="Currently amended] The composition of claim 1 wherein said particles are surface treated.
[13" claim-type="Currently amended] The composition of claim 1, wherein said particles comprise colloidal silica.
[14" claim-type="Currently amended] The composition of claim 1, wherein the particles have an average particle size of less than 100 microns prior to incorporation into the composition.
[15" claim-type="Currently amended] 15. The composition of claim 14, wherein said particles have an average particle size of less than 50 microns prior to incorporation into said composition.
[16" claim-type="Currently amended] The composition of claim 1, wherein the particles have an average particle size in the range of 1 to less than 1000 nanometers prior to incorporation into the composition.
[17" claim-type="Currently amended] The composition of claim 16, wherein the particles have an average particle size in the range of 1 to 100 nanometers prior to incorporation into the composition.
[18" claim-type="Currently amended] 18. The composition of claim 17, wherein said particles have an average particle size in the range of 5-50 nanometers prior to incorporation into said composition.
[19" claim-type="Currently amended] The composition of claim 1 wherein the particles are present in the composition in an amount ranging from 0.01 to 75% by weight, based on the total weight of the resin solids of the component that forms the composition, when the particles are added to another component that forms the composition. .
[20" claim-type="Currently amended] 20. The composition of claim 19, wherein said particles are present in an amount of at least 0.1% by weight.
[21" claim-type="Currently amended] The composition of claim 20, wherein said particles are present in an amount of at least 0.5% by weight.
[22" claim-type="Currently amended] The composition of claim 21 wherein the particles are present in an amount of at least 5% by weight.
[23" claim-type="Currently amended] The composition of claim 1 wherein said particles are present in an amount of less than 20% by weight.
[24" claim-type="Currently amended] The composition of claim 1, wherein said particles are present in an amount of less than 10% by weight.
[25" claim-type="Currently amended] The composition of claim 1, wherein the one or more reactants are selected from one or more curing agents.
[26" claim-type="Currently amended] 27. The composition of claim 25, wherein said at least one curing agent is selected from aminoplast resins, polyisocyanates, protected polyisocyanates, polyepoxides, polyacids, and polyols.
[27" claim-type="Currently amended] 27. The composition of claim 25, wherein said at least one curing agent is selected from aminoplasts and polyisocyanates.
[28" claim-type="Currently amended] 26. The composition of claim 25, wherein when said curing agent is added to other components forming said composition, it is present in an amount ranging from 1 to 65 weight percent based on the total weight of resin solids of the components forming said composition.
[29" claim-type="Currently amended] 29. The composition of claim 28, wherein said curing agent is present in an amount of at least 5% by weight.
[30" claim-type="Currently amended] 29. The composition of claim 28, wherein said curing agent is present in an amount of at least 10% by weight.
[31" claim-type="Currently amended] The composition of claim 1 wherein the component forming the composition comprises at least one film forming material different from (a).
[32" claim-type="Currently amended] 32. The composition of claim 31, wherein said at least one film forming material comprises a polymer comprising at least one functional group other than above in addition to said at least one polysiloxane.
[33" claim-type="Currently amended] 33. The method of claim 32, wherein at least one reactive functional group of the at least one polymer is hydroxyl group, carboxyl group, isocyanate group, protected polyisocyanate group, primary amine group, secondary amine group, amide group, carbamate group, urea Composition selected from the group consisting of urethane groups, vinyl groups, unsaturated ester groups, maleimide groups, fumarate groups, anhydride groups, hydroxy alkylamide groups, and epoxy groups.
[34" claim-type="Currently amended] 33. The composition of claim 32, wherein at least one reactive functional group of the at least one polymer is selected from hydroxyl groups and carbamate groups.
[35" claim-type="Currently amended] The composition of claim 1, wherein the components forming the composition comprise one or more catalysts.
[36" claim-type="Currently amended] 36. The composition of claim 35, wherein the one or more catalysts are present in an amount sufficient to promote a reaction between one or more functional groups of the one or more reactants and one or more reactive functional groups of the one or more polysiloxanes.
[37" claim-type="Currently amended] 36. The composition of claim 35, wherein said at least one catalyst is an acid catalyst.
[38" claim-type="Currently amended] 36. The composition of claim 35, wherein said at least one catalyst is selected from acid phosphates, substituted sulfonic acids, and unsubstituted sulfonic acids.
[39" claim-type="Currently amended] 39. The composition of claim 38, wherein said at least one catalyst is phenyl acid phosphate.
[40" claim-type="Currently amended] The composition of claim 1, wherein the components forming the composition comprise one or more surface active agents.
[41" claim-type="Currently amended] 41. The composition of claim 40, wherein said at least one surface active agent is selected from anionic surfactants, nonionic surfactants, cationic surfactants, and mixtures of any of the foregoing materials.
[42" claim-type="Currently amended] The composition of claim 1, wherein said at least one polysiloxane has at least one unit of formula
Formula I
R ¹ _n R ² _m SiO _{(4-nm) / 2}
Where
Each R ¹ may be the same or different and represents H, OH, or a monovalent hydrocarbon;
Each R ² may be the same or different and represents a group comprising one or more reactive functional groups;
m and n satisfy the requirements of 0 <n <4, 0 <m <4 and 2≤ (m + n) <4.
[43" claim-type="Currently amended] 43. The compound of claim 42, wherein each R ² is hydroxyl group, carboxyl group, isocyanate group, protected polyisocyanate group, primary amine group, secondary amine group, amide group, carbamate group, urea group, urethane group, A composition representing a group comprising at least one reactive functional group selected from vinyl groups, unsaturated ester groups, maleimide groups, fumarate groups, anhydride groups, hydroxy alkylamide groups, and epoxy groups.
[44" claim-type="Currently amended] The composition of claim 43 which represents a group comprising at least one reactive functional group selected from hydroxyl groups, carbamate groups, carboxyl groups and epoxy groups.
[45" claim-type="Currently amended] The composition of claim 1, wherein the at least one polysiloxane has the formula II or III:
Formula II

Formula III

Where
m has a value of 1 or more;
m 'ranges from 0 to 75;
n ranges from 0 to 75;
n 'ranges from 0 to 75;
Each R may be the same or different and is selected from H, OH, a monovalent hydrocarbon group, and a mixture of any of the above groups;
Each R ^a may be the same or different and includes formula IV:
Formula IV
-R ³ -X
Where
Each —R ³ may be the same or different and is selected from an alkylene group, an oxyalkylene group, an alkylene aryl group, an alkenylene group, an oxyalkenylene group, and an alkenylene aryl group;
Each X may be the same or different and may be hydroxyl group, carboxyl group, isocyanate group, protected polyisocyanate group, primary amine group, secondary amine group, amide group, carbamate group, urea group, urethane group, A group comprising at least one reactive functional group selected from vinyl group, unsaturated ester group, maleimide group, fumarate group, anhydride group, hydroxy alkylamide group, and epoxy group.
[46" claim-type="Currently amended] 46. The composition of claim 45, wherein (n + m) is in the range 2-9.
[47" claim-type="Currently amended] 46. The composition of claim 45, wherein (n '+ m') is in the range 2-9.
[48" claim-type="Currently amended] 49. The composition of claim 46, wherein (n + m) is in the range of 2-3.
[49" claim-type="Currently amended] 48. The composition of claim 47, wherein (n '+ m') is in the range of 2-3.
[50" claim-type="Currently amended] 46. The composition of claim 45, wherein each X can be the same or different and represents a group comprising at least one reactive functional group selected from hydroxyl groups and carbamate groups.
[51" claim-type="Currently amended] 46. The composition of claim 45, wherein each X can be the same or different and represents a group comprising at least two hydroxyl groups.
[52" claim-type="Currently amended] 46. The group of claim 45, wherein each X is the same or different and represents a group comprising one or more substituents selected from H, a group substituted with monohydroxy, and a group having the formula (V): wherein a portion of X is A composition which is a group having the formula (V):
Formula V
R ^4- (CH ₂ -OH) _P
Where
When p is 2 and R ³ is C ₁ to C ₄ alkyl, R ⁴ is Or
When p is 3, R ⁴ is to be.
[53" claim-type="Currently amended] 53. The composition of claim 52, wherein m is 2 and p is 2.
[54" claim-type="Currently amended] The process of claim 1, wherein the polysiloxane (a) is one or more of the following reactants:
(i) at least one polysiloxane of formula VI:
Formula VI

[Wherein,
Each substituent group R may be the same or different and represents a group selected from H, OH, a monovalent hydrocarbon group, and a mixture of any of the above groups;
At least one group represented by R is H and n 'is in the range of 0 to 100 such that the percent SiH content of the polysiloxane is in the range of 2 to 50%; And
(ii) hydroxyl groups, carboxyl groups, isocyanate groups, protected polyisocyanate groups, primary amine groups, secondary amine groups, amide groups, carbamate groups, urea groups, urethane groups, vinyl groups, unsaturated ester groups, maleis At least one molecule comprising at least one functional group selected from a mid group, a fumarate group, an anhydride group, a hydroxy alkylamide group, and an epoxy group, and at least one unsaturated bond capable of undergoing a hydrosilylation reaction
A composition that is a reaction product of.
[55" claim-type="Currently amended] 55. The composition of claim 54, wherein said at least one functional group is selected from hydroxyl groups.
[56" claim-type="Currently amended] The composition of claim 1, wherein the component forming the composition comprises one or more materials having one or more materials with one or more reactive functional groups protected by silyl groups.
[57" claim-type="Currently amended] 59. The composition of claim 56, wherein said silyl protecting group has the formula
Formula IX

Where
Each of R ₁ , R ₂ and R ₃ may be the same or different and is selected from hydrogen, an alkyl group containing 1 to 18 carbon atoms, a phenyl group and an allyl group.
[58" claim-type="Currently amended] 59. The composition of claim 56, wherein said at least one reactive functional group is selected from hydroxyl groups and carboxyl groups.
[59" claim-type="Currently amended] 59. The compound of claim 56, wherein the compound capable of reacting with the functional group to form the silyl group is hexamethyldisilazane, trimethylchlorosilane, trimethylsilyldiethylamine, t-butyl dimethylsilyl chloride, diphenyl methylsilyl chloride, Hexamethyl disilyl azide, hexamethyl disiloxane, trimethylsilyl triflate, hexamethyldissilyl acetamide and a mixture of any of the above compounds.
[60" claim-type="Currently amended] 59. The composition of claim 56, wherein said at least one substance comprises at least one bond selected from ester bonds, urethane bonds, urea bonds, amide bonds, siloxane bonds, and ether bonds.
[61" claim-type="Currently amended] 59. The composition of claim 56, wherein said at least one substance comprises at least one compound having the formula
Formula X

[62" claim-type="Currently amended] The composition of claim 1 wherein said composition has an initial scratch resistance value such that at least 50% of the initial 20 ° gloss is retained after a scratch test upon curing.
[63" claim-type="Currently amended] The composition of claim 1, wherein said composition has an initial scratch resistance value such that at least 40% of the initial 20 ° gloss is retained after a scratch test upon curing.
[64" claim-type="Currently amended] The composition of claim 1, wherein said composition has a retained scratch resistance value such that at least 30% of the initial 20 ° gloss is retained after a scratch test upon curing.
[65" claim-type="Currently amended] The composition of claim 1, wherein said composition has a retained scratch resistance value such that at least 40% of the initial 20 ° gloss is retained after a scratch test upon curing.
[66" claim-type="Currently amended] The composition of claim 1, wherein the composition has a concentration of particles in the surface region that is greater than the concentration of particles in the interior region upon curing.
[67" claim-type="Currently amended] A cured coating prepared from the composition according to claim 1.
[68" claim-type="Currently amended] 68. The cured coating of claim 67, wherein the cured composition is thermally cured.
[69" claim-type="Currently amended] 68. The cured coating of claim 67, wherein the cured composition is cured by exposure to ion beams.
[70" claim-type="Currently amended] 68. The cured coating of claim 67, wherein the cured composition is cured by exposure to actinic radiation.
[71" claim-type="Currently amended] 68. The cured coating of claim 67, wherein the cured composition is cured by exposure to (1) ion or actinic rays and (2) thermal energy.
[72" claim-type="Currently amended] A coated substrate comprising a substrate and a composition according to claim 1 deposited on at least a portion of the substrate.
[73" claim-type="Currently amended] A method of producing a cured coating material on a substrate, comprising coating the coating composition of claim 1 over at least a portion of the substrate.
[74" claim-type="Currently amended] 74. The method of claim 73 wherein the coating composition is thermally cured after being applied to the substrate.
[75" claim-type="Currently amended] 74. The method of claim 73, wherein the substrate is an automotive substrate.
[76" claim-type="Currently amended] A coated automotive substrate comprising an automotive substrate and a composition according to claim 1 deposited on at least a portion of said automotive substrate.
[77" claim-type="Currently amended] 77. The coated automotive substrate of claim 76, wherein said automotive substrate is a bumper.
[78" claim-type="Currently amended] 77. The coated automotive substrate of claim 76, wherein said automotive substrate is a hood.
[79" claim-type="Currently amended] 77. The coated automotive substrate of claim 76, wherein said automotive substrate is a door.
[80" claim-type="Currently amended] 77. The coated automotive substrate of claim 76, wherein said automotive substrate is a fender.
[81" claim-type="Currently amended] 77. The coated automotive substrate of claim 76, wherein said automotive substrate is a mirror housing.
[82" claim-type="Currently amended] A multicomponent composite coating composition comprising a undercoat deposited from a colored coating composition and a composition according to claim 1 applied over at least a portion of the undercoat.
[83" claim-type="Currently amended] 83. The multicomponent composite of claim 82, wherein said cured composition is a top coat.
[84" claim-type="Currently amended] 83. The multicomponent composite of claim 82, wherein said cured composition is transparent.
[85" claim-type="Currently amended] (a) applying a colored composition to a substrate to produce an undercoat;
(b) applying the composition of claim 1 over at least a portion of the undercoat; And
(c) curing the composition to produce a cured composition
Comprising a multicomponent composite.
[86" claim-type="Currently amended] 86. The method of claim 85, wherein the coating composition is thermally cured after being applied to the substrate.
[87" claim-type="Currently amended] 86. The method of claim 85, wherein the coating composition is cured by exposure to ion beams after being applied to the substrate.
[88" claim-type="Currently amended] 86. The method of claim 85, wherein the coating composition is cured by exposure to actinic radiation after it is applied to the substrate.
[89" claim-type="Currently amended] 86. The method of claim 85, wherein the coating composition is applied to the substrate and cured by exposure to (1) ion radiation or actinic radiation and (2) thermal energy.
[90" claim-type="Currently amended] A method of improving scratch resistance of a polymeric substrate or a polymer coated substrate, comprising coating the composition of claim 1 over at least a portion of the substrate.
[91" claim-type="Currently amended] A method of retaining the gloss of a polymeric substrate or a polymer coated substrate after a predetermined time, comprising coating the composition according to claim 1 over at least a portion of the substrate.
[92" claim-type="Currently amended] A method of revitalizing the gloss of a polymeric substrate or a polymer coated substrate, comprising coating the composition of claim 1 over at least a portion of the substrate.
[93" claim-type="Currently amended] (a) one or more polysiloxanes comprising one or more reactive functional groups;
(b) at least one reactant comprising at least one reactive functional group of said at least one polysiloxane and at least one functional group reactive with at least one functional group selected from at least one functional group of at least one reactant; And
(c) a plurality of particles
A composition prepared from a component comprising: wherein each component is different and at least one reactive functional group of the at least one polysiloxane is non-reactive with the particles, and the scratch resistance value retained upon curing of the composition is determined by the plurality of particles. Compositions greater than the scratch resistance value retained upon curing of a composition that does not include.
[94" claim-type="Currently amended] 94. The composition of claim 93, wherein said composition has initial scratch resistance such that at least 50% of said initial 20 ° gloss is retained after a scratch test upon curing.
[95" claim-type="Currently amended] 94. The composition of claim 93, wherein said composition is retained such that at least 40% of said initial 20 ° gloss is retained after a scratch test upon curing.
[96" claim-type="Currently amended] 94. The composition of claim 93, wherein said composition has a concentration of particles in the surface region that is greater than the concentration of particles in the interior region upon curing.
[97" claim-type="Currently amended] A cured coating prepared from the composition of claim 93.
[98" claim-type="Currently amended] A coated substrate comprising a substrate and a composition according to claim 93 deposited on at least a portion of the substrate.
[99" claim-type="Currently amended] 94. A method of producing a cured composition on a substrate, comprising applying the composition of claim 93 onto at least a portion of the substrate and curing the composition after being applied to the substrate.
[100" claim-type="Currently amended] 107. The method of claim 99, wherein the coating composition is thermally cured after being applied to the substrate.
[101" claim-type="Currently amended] 107. The method of claim 99, wherein the substrate is an automotive substrate.
[102" claim-type="Currently amended] A coated automotive substrate comprising an automotive substrate and a composition according to claim 93 deposited over at least a portion of the automotive substrate.
[103" claim-type="Currently amended] 107. The coated automotive substrate of claim 99, wherein said automotive substrate is a bumper.
[104" claim-type="Currently amended] 107. The coated automotive substrate of claim 99, wherein said automotive substrate is a hood.
[105" claim-type="Currently amended] 107. The coated automotive substrate of claim 99, wherein said automotive substrate is a door.
[106" claim-type="Currently amended] 107. The coated automotive substrate of claim 99, wherein said automotive substrate is a fender.
[107" claim-type="Currently amended] 93. A multicomponent composite coating composition comprising a coating film deposited from a colored coating composition and a composition according to claim 93 applied over at least a portion of the coating film.
[108" claim-type="Currently amended] (a) applying a colored composition to a substrate to produce an undercoat;
(b) applying the composition of claim 93 over at least a portion of the undercoat; And
(c) curing the top coat composition to produce a cured composition
Method for producing a multicomponent composite comprising a.
[109" claim-type="Currently amended] 94. A method of improving scratch resistance of a polymeric substrate or a polymer coated substrate, comprising coating the composition of claim 93 over at least a portion of the substrate.
[110" claim-type="Currently amended] 94. A method of retaining the gloss of a polymeric substrate or a polymer coated substrate after a predetermined time, comprising coating the composition of claim 93 over at least a portion of the substrate.
[111" claim-type="Currently amended] 93. A method of revitalizing the gloss of a polymeric substrate or a polymer coated substrate, comprising coating the composition of claim 92 over at least a portion of the substrate.
[112" claim-type="Currently amended] (a) comprises at least one reactive functional group and comprises at least one unit of formula (I), provided that less than 70% of the partial condensate is CH ₃ Si (OH) ₃ , provided that said polysiloxane is a partial condensate of silanol; Polysiloxanes as Subcondensates:
Formula I
R ¹ _n R ² _m SiO _{(4-nm) / 2}
[Wherein,
Each R ¹ may be the same or different and represents H, OH, or a monovalent hydrocarbon group;
Each R ² may be the same or different and represents a group comprising one or more reactive functional groups;
m and n satisfy the requirements of 0 <n <4, 0 <n <4, 2≤ (m + n) <4]; And
(b) a plurality of particles having an average particle size of less than 100 nanometers prior to incorporation into the composition
A composition prepared from a component comprising: wherein each component is different and at least one reactive functional group of the at least one polysiloxane is substantially non-reactive with the particles.
[113" claim-type="Currently amended] 112. The composition of claim 112, wherein said composition has an initial scratch resistance value such that at least 50% of said initial 20 ° gloss is retained after a scratch test upon curing.
[114" claim-type="Currently amended] 112. The composition of claim 112, wherein the composition has a scratch resistance value that is retained such that at least 40% of the initial 20 ° gloss is retained after a scratch test upon curing.
[115" claim-type="Currently amended] 116. The composition of claim 112, wherein the composition has a concentration of particles in the surface region that is greater than the concentration of particles in the interior region upon curing.
[116" claim-type="Currently amended] A cured coating prepared from the composition of claim 112.
[117" claim-type="Currently amended] A coated substrate comprising a substrate and a composition according to claim 112 deposited on at least a portion of the substrate.
[118" claim-type="Currently amended] A method of making a cured composition on a substrate comprising applying the composition of claim 112 over at least a portion of the substrate and curing the composition after being applied to the substrate.
[119" claim-type="Currently amended] 118. The method of claim 118, wherein the coating composition is thermally cured after being applied to the substrate.
[120" claim-type="Currently amended] 118. The method of claim 118, wherein the substrate is an automotive substrate.
[121" claim-type="Currently amended] A coated automotive substrate comprising an automotive substrate and a composition according to claim 112 deposited on at least a portion of said automotive substrate.
[122" claim-type="Currently amended] 126. The coated automotive substrate of claim 121, wherein said automotive substrate is a bumper.
[123" claim-type="Currently amended] 126. The coated automotive substrate of claim 121, wherein said automotive substrate is a hood.
[124" claim-type="Currently amended] 126. The coated automotive substrate of claim 121, wherein said automotive substrate is a door.
[125" claim-type="Currently amended] 126. The coated automotive substrate of claim 121, wherein said automotive substrate is a fender.
[126" claim-type="Currently amended] A multicomponent composite coating composition comprising a coating film deposited from a colored coating composition and a composition according to claim 112 applied over at least a portion of the coating film.
[127" claim-type="Currently amended] 129. The multicomponent composite of claim 126 wherein the composition is a top coat.
[128" claim-type="Currently amended] 126. The multicomponent composite of claim 126, wherein said composition is transparent.
[129" claim-type="Currently amended] (a) applying a colored composition to a substrate to produce an undercoat;
(b) applying the composition of claim 112 over at least a portion of the undercoat; And
(c) curing the composition to produce a cured composition
Multicomponent composite manufacturing method comprising a.
[130" claim-type="Currently amended] 118. A method of improving scratch resistance of a polymeric substrate or a polymer coated substrate, comprising coating the composition of claim 112 over at least a portion of the substrate.
[131" claim-type="Currently amended] 112. A method of retaining the gloss of a polymeric substrate or a polymer coated substrate after a predetermined time, comprising coating the composition according to claim 112 over at least a portion of the substrate.
[132" claim-type="Currently amended] 117. A method of revitalizing the gloss of a polymeric substrate or a polymer coated substrate, comprising coating the composition of claim 112 over at least a portion of the substrate.
[133" claim-type="Currently amended] (a) at least one polysiloxane comprising (i) at least one reactive functional group and at least one unit of formula (I):
Formula I
R ¹ _n R ² _m SiO _{(4-nm) / 2}
[Wherein,
Each R ¹ may be the same or different and represents H, OH, a monovalent hydrocarbon group or a monovalent siloxane group;
Each R ² may be the same or different and represents a group comprising one or more reactive functional groups;
m and n satisfy the requirements of 0 <n <4, 0 <m <4 and 2 ≦ (m + n) <4; And
(ii) at least one polyacrylate surface active agent having an amino and hydroxyl functional group, an acid functional group and at least one functional group selected from acid and hydroxyl functional groups
One or more surface active agents comprising; And
(b) a plurality of particles
A powder composition made from a component comprising a powder composition wherein each component is different and at least one reactive functional group of the at least one polysiloxane and at least one functional group of the at least one polyacrylate surface active agent are non-reactive with the particles. .

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同族专利:

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公开号 | 公开日

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CA2380408C|2008-04-22|

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AU6392900A|2001-02-19|

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US20030212199A1|2003-11-13|

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US20040225057A1|2004-11-11|

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MX253908B|2008-01-28|

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MX270896B|2009-10-14|

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JP2009197238A|2009-09-03|

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US6593417B1|2003-07-15|

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AU771279B2|2004-03-18|

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JP2003506518A|2003-02-18|

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BR0012875A|2002-04-16|

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KR100760068B1|2007-09-18|

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US7005472B2|2006-02-28|

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JP2006057098A|2006-03-02|

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EP1204708A1|2002-05-15|

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US6759478B2|2004-07-06|

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WO2001009259A1|2001-02-08|

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WO2001009259A9|2002-07-18|

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CA2380408A1|2001-02-08|

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CN1209427C|2005-07-06|

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CN1376187A|2002-10-23|

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MXPA02001097A|2003-07-21|

引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
1999-07-30|Priority to US36506999A

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1999-07-30|Priority to US09/365,069

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1999-12-23|Priority to US17189899P

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1999-12-23|Priority to US60/171,898

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2000-01-21|Priority to US48913200A

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2000-01-21|Priority to US09/489,132

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2000-07-31|Application filed by 랜닝 지. 브라이어, 피피지 인더스트리즈 오하이오, 인코포레이티드

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2000-07-31|Priority to PCT/US2000/020838

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2002-07-10|Publication of KR20020056882A

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2007-09-18|Application granted

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2007-09-18|Publication of KR100760068B1

优先权:

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申请号 | 申请日 | 专利标题

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US36506999A| true| 1999-07-30|1999-07-30|

---

US09/365,069|1999-07-30|

---

US17189899P| true| 1999-12-23|1999-12-23|

---

US60/171,898|1999-12-23|

---

US48913200A| true| 2000-01-21|2000-01-21|

---

US09/489,132|2000-01-21|

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PCT/US2000/020838|WO2001009259A1|1999-07-30|2000-07-31|Coating compositions having improved scratch resistance, coated substrates and methods related thereto|