Power transmission belt, traction rope for reinforcing an elastomeric article, method and adhesive c

专利摘要:
a belt with a tensioned thread fixed on an elastomeric body, having an adhesive composition of polyurea-urethane impregnating the thread and coating like fibers. the composition is the reaction product of a polyurethane prepolymer and a curing diamine or water. the prepolymer is a reaction product of a compact and symmetrical diisocyanate and a polyester polyol, polyether, or polycarbonate. the belt body can be made of cast polyurethane, vulcanized rubber, or thermoplastic elastomer. the wire may have an adhesive coating.
公开号:BR112012013342B1
申请号:R112012013342-0
申请日:2010-11-24
公开日:2020-03-24
发明作者:Joseph R. Duke；John Graeme Knox
申请人:The Gates Corporation；
IPC主号:

专利说明:

“STRENGTH TRANSMISSION BELT, TRACTION ROPE FOR THE STRENGTHENING OF AN ELASTOMERIC ITEM, METHOD AND ADHESIVE COMPOSITION TO IMPREGNATE A FIBER BEAM FOR USE IN THE STRENGTHENING OF A FLEXIBLE ELASTOMERIC ITEM”
History of the Invention
Field of the Invention [001] This invention refers in general terms to a method of treating rope traction for a force transmission belt, the treatment, rope and the resulting belt, more particularly to the carbon fiber reinforcement treated with polyurea -urethane, and specifically to a carbon fiber thread impregnated with a polyurea-urethane composition subjected to wet curing.
Description of Priority [002] US Patent No. 5,807,194 to Knutson et al, the contents of which are incorporated herein in full, discloses a force transmission belt synchronized with a belt body of cast urethane belt material, teeth of the belt formed from the body, a reinforcement of wear-resistant fabric arranged along the peripheral surfaces of the belt teeth, and a tensioned member of helical spiral rope embedded in the belt body and a carbon fiber thread, where there is interstices between the rope fibers and the belt material penetrates at least part of the rope interstices as the belt is fused so that the interstices of the threads contain a minimum of about 0.21 mg of belt material per mm ³ of string volume. The penetration of polyurethane elastomer into the rope can result in excellent physical adhesion. However, urethane in its cured state as a high modulus material of the belt can render a particular rope material unacceptable when it penetrates the interstices of the rope because such a penetrated rope can have an unacceptably high flexural modulus. Also, the penetrating urethane can transfer a very high tension to the filaments that comprise the string and thus cause unacceptable rupture of the filament resulting in string failure. Fused urethane materials are often of such viscosity that it is difficult to impregnate the rope sufficiently. Problems resulting from insufficient impregnation include the fraying of the thread, the short time of fatigue, etc.
[003] US Patent No. 5,231,159 to Patterson et al, the content of which is incorporated herein in its entirety, describes molten compositions or RIM polyurethane compositions useful for belts. Polyurethanes are based on the reaction product of an isocyanate-terminated prepolymer (preferably polyether), an amine or hydroxyl-terminated polyol, and a polyamine or polyol chain extender.
[004] US Patent No. 6,964,626 to Wu et al, the content of which is incorporated into it in its entirety, discloses improved polyurethane / urea elastomers having high stability
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2/30 temperatures at around 140-150 ° C and low temperature flexibility at around -35 - (-
40) ° C, for use in dynamic applications. These elastomers are useful for application on belts, specifically on synchronized or synchronized automotive belts, V-belts, multi-V or micro-ribbed belts, flat belts and the like. Polyurethane / urea elastomers are prepared by reacting polyisocyanate prepolymers with symmetric primary diamine chain extenders, mixtures of symmetric primary diamine chain extenders and secondary diamine chain extenders, or mixtures of symmetric primary diamine chain extenders and non-oxidative polyols , which are all chosen to eliminate the need for catalysts via standard molding processes, and to improve phase separation. Polyisocyanate prepolymers are reaction products of polyols which are not oxidative at high temperatures, such as polycarbonate polyols, polyester polyols, or mixtures thereof, with organic polysocyanates which are compact, symmetrical and aromatic, such as para-phenylene diisocyanate, 1 , 5-naphthalene diisocyanate, and 2,6-toluene diisocyanate, or are aliphatic and have geometric structure trans or trans, trans, such as trans-1,4-cyclohexane diisocyanate and trans, trans-4,4'dicyclohexylmethyl diisocyanate.
[005] Previous efforts to treat the rope with a softer material to produce a more flexible rope in polyurethane belts resulting in belts with less torque resistance, greater heat increase during flexion, little resistance to delamination, and the like . Adhesive treatments for carbon fiber rope were generally less than suitable for belt applications, whether for polyurethane or rubber belts. Representative prior treatments with carbon fiber adhesive are US Patent Nos. 6,695,733 and 6,945,891 to Knutson, which disclose a rubber toothed belt with tractioned carbon fiber rope treated with resorcinolformaldehyde latex (RFL). A also representative technique of carbon fiber adhesive is the epoxy and RFL based treatment of US Patent No. 4,044,540 to Toki et al, and the US RFL based and RFL treatment No. 4,978,409 to Fujiwara et al.
[006] US Patent Application Publication No. 2005-0271874A1 by Sakajiri et al. discloses carbon fiber spacer treatment with unsaturated urethane compound as the main component. JP 2005-023480A2 by Sakajiri et al. discloses a resin composition including a polyurethane, an epoxy resin and a crosslinking agent to impregnate a carbon fiber bundle.
[007] US Patent Publication No. 2009 / 0098194A1 describes the chemistry of urea urea.
[008] US Patent No. 3,962,511 discloses polyurethane compositions for encapsulating fabric for industrial conveyor and a method of applying a reaction mixture of polyurethane in a solution of organic solvent.
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3/30 [009] Reference is made to pending patent applications serial number 11 / 947,470 filed on November 29, 2007, serial number 12 / 044,957 filed on March 8, 2008, the content of which is fully incorporated in this.
Summary [0010] The present invention is directed to systems and methods that provide flexible high-modulus traction ropes for the reinforcement of dynamic rubber articles and belts, including polyurethane energy transmission belts and rubber driving belts. The present invention provides a rope with good adhesion and compatibility with materials of the polyurethane belt body and with improved operation including excellent tensile strength, reduced fraying or fraying, and durability. The polyurethane belts according to the invention have improved flexibility to withstand operation, posterior flexion, and the like, and improved cutting performance. The rubber belts with carbon traction ropes according to the invention exhibit improved performance compared to carbon rope treated with conventional RFL. The invention is directed to ropes with an adhesive treatment that can be applied to a twisted bundle of fibers with good penetration into the bundle.
[0011] The present invention is directed to a belt with a traction rope attached to an elastomeric belt body with the rope having a polyurea-urethane (PUU) adhesive treatment. The PUU adhesive can be based on a polyurethane prepolymer, such as a polyester or polyether or polycarbonate, terminated with isocyanate, having been derived from a polyol reacted with a diisocyanate. The polyester can be polycaprolactone. The polyol can be mixed with diol and triol. The diisocyanate can be a symmetrical and compact diisocyanate, such as PPDI, TDI, MDI, and the like. The diisocyanate may not be perfectly symmetrical, but it preferably is. The adhesive treatment can have a compact and symmetrical curing diamine, or it can be cured with water, such as ambient humidity. The invention is also directed to the traction rope and the adhesive composition.
[0012] In one embodiment of the invention, the stranded yarn can be based on carbon fiber filament yarn, which can be twisted prior to impregnation with the adhesive. The interstices between the fibers, regardless of the type of fiber, can be partially or completely filled with the adhesive. The fibers can be coated with the adhesive. The filling can be from 20% to 99% or 100% of the volume of the interstices. Although the fibers can be coated and some interstices filled with adhesive, the coating can be relatively thin and not sufficient to completely bond all fibers together. In one embodiment using fused polyurethane for the belt body material, the fused polyurethane can impregnate some or all of the remaining interstices and intimately contact the adhesive coating. Alternatively, the yarn may have an additional adhesive coating.
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4/30 [0013] The invention is also directed to a method including the steps of producing an adhesive immersion by mixing or dissolving the polyurethane prepolymer in a suitable solvent together with a small or compact and symmetrical curing diamine, immersing a strand or strand twisted on immersion, drying the solvent, and curing the adhesive at least partially. The dressing may be only water that may be available from the ambient humidity present in the solvent and / or air. During curing, bonds are formed between urea and isocyanate terminal groups in the prepolymer molecules. The prepolymer can be linear (two isocyanate ends) or branched (three or more isocyanate end groups) (preferably only two or three or mixtures thereof).
[0014] The above has very broadly defined the characteristics and technical advantages of the present invention so that the following detailed description of the invention can be better understood. The advantages of the invention and the additional features will be described hereinafter which form the subject of the claims of the invention. Those skilled in the art should appreciate that the design and the specific modality disclosed can readily be used as a basis for modifying or developing other structures to accomplish the same purposes as the present invention. Those skilled in the art should also realize that such equivalent constructions do not depart from the spirit and scope of the invention as determined in the appended claims. The new features which are believed to be characteristic of the invention, as well as their organization and method of operation, together with other objects and advantages will be better understood from the following description when considered together with the attached figures. It should be expressly understood, however, that each of the figures is provided for purposes of illustration and description only and is not intended as a definition of the limits of the present invention.
Brief Description of the Drawings [0015] The attached drawings, which are incorporated and form part of the specification, where similar numbers designate similar parts, illustrate modalities of the present invention and with the description, serve to explain the principles of the invention. In the drawings:
[0016] FIG. 1 is a fragmentary perspective view, with parts in section, of a synchronizing belt constructed in accordance with an embodiment of the present invention;
[0017] FIG. 2 is a fragmentary perspective view, with parts in section, of a V-belt constructed in accordance with an embodiment of the present invention;
[0018] FIG. 3 is a fragmentary perspective view, with parts in section, of a multi-V ribbed belt constructed in accordance with an embodiment of the present invention;
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5/30 [0019] FIG. 4 is a scheme of a flexibility test used to test a characteristic of a belt modality of the invention.
Detailed Description [0020] The present invention is directed to an adhesive polyurea-urethane (PUU) composition for use in textile fibers, and in particular for the preparation of treated traction rope for use in reinforced rubber articles such as belts or hoses . The PUU adhesive is based on a urethane-bonded prepolymer which is then cured with amines or water to form urea bonds. The PUU adhesive can preferably be subjected to wet curing, rather than being cured with amine. The PUU adhesive may preferably be based on a para-phenylene diisocyanate prepolymer (PPDI) and a polycaprolactone (PCL). PUU-treated rope is particularly advantageous on polyurethane (PU) and / or PUU belts or other polyurethane articles, be it melted elastomer or thermoplastic elastomer. With a suitable adhesive coating, the PUU-treated rope is also suitable for use in rubber belts, hoses, or other vulcanized rubber articles. The fiber of the treated rope may preferably be carbon fiber.
[0021] The PUU adhesive can be based on a polyurethane prepolymer, such as an isocyanate-terminated polyester or polyether or polycarbonate. Such prepolymers are produced by reacting a polyisocyanate, with a polyol (i.e., a hydroxy-terminated polymer, a diol and / or triol preferably). Preferably the polyisocyanate is a symmetrical and compact diisocyanate, such as PPDI, 2,4- and / or 2,6-toluene diisocyanate (TDI), 4,4'-methylene diphenyl diisocyanate (MDI), etc. The polyisocyanate may not be perfectly symmetrical, but it is preferably symmetrical. The PU prepolymer can then be dissolved in a suitable solvent together with a small, symmetrical, curing diamine / curative extender or only with water that may simply be available from the ambient humidity present in the solvent and / or the air, which after drying the solvent, reacts to form urea bonds between isocyanate end groups in the prepolymer molecules. The prepolymer can be linear (i.e., with two isocyanate end groups) or branched (i.e., with three or more isocyanate end groups), but preferably has only two or three isocyanate end groups or mixtures thereof. The urea bonds / segments aggregate to form rigid segment domains interspersed through a matrix of soft segment polyester, polyether, etc. For a belt rope application, it has been found advantageous to produce the adhesive softer than the material of the belt body, so small and compact dressings are preferred. The most preferable dressing is water, producing the smallest rigid segment and therefore the softest PUU adhesive. The most preferable soft segment for belt applications is a polyester such as polycaprolactone because of its excellent heat resistance, shear resistance, etc. Polyethers generally have less shear strength than polyesters.
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6/30
Shear strength can be very important in reinforced rubber articles such as belts, especially at the interface between the wire and the article body or the toothed compound of the belt. The most preferable diisocyanate for belt applications is PPDI because of its thermostable bonds, and because it has the best reactivity with water, the preferred dressing. The strings made with the preferred PUU are extremely flexible after immersion or treatment, and so impregnated partially or totally with PUU. As a result, the treated ropes exhibit minimal operational damage during processing and end use, and they bond well to various formulations of cast PU or PUU belt bodies, thermoplastic elastomers (TPEs), and thermoplastic polyurethanes (TPUs), and to rubber on vulcanized rubber belts. For some applications, the bond can be increased with suitable adhesive coatings.
[0022] The general term polyurethane (PU) can be commonly used in the art to include polyureas, polyisocyanurates, and other polymers that may have few or no urethane groups or bonds. Here, polyurethane is used in a more literal sense to refer to polymers that are reaction products of isocyanates and alcohols and thus contain significant amounts of urethane, -NR-CO-O- bonds. Here and in the claims, polyurea is used in reference to polymers that are reaction products of isocyanates with themselves in the presence of moisture or water, or reactions of isocyanates with amines that can be reaction intermediates, resulting in significant amounts of urea, -NR bonds '-CO-NR-. In these bonds urethane or urea, R, R, and R are each independently hydrogen; alkyl, or aryl groups. Included in the term polyurea are biurets, which are formed when a urea group reacts with additional isocyanate to form a branched polymer. Polyisiocyanurate is used in reference to polymers that are reaction products of isocyanates with themselves at high temperatures to form a triisocyanurate ring structure. The terms polyurea and polyurethane do not imply total purity of the reaction, but are used to indicate what is believed to be the dominant reaction mechanism and / or reaction product involved in the inventive adhesive system. Thus, smaller amounts of other reaction products or other reaction mechanisms can be involved without further mention in what can still be referred to in this as a reaction product predominantly of polyurea-urethane. The term polymer is understood to include polymers, copolymers (e.g., polymers formed using two or more different monomers), oligomers and combinations thereof, as well as polymers, oligomers, or copolymers that can be formed into a miscible mixture. The term prepolymer refers to a monomer or monomer system that has been reacted to an intermediate state of molecular weight. This material is capable of undergoing another polymerization by groups reactive to a state of high molecular weight fully cured. As such, mixtures of reactive polymers with unreacted monomers can also be referred to as prepol
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Mere 7/30. Typically such prepolymers are relatively low molecular weight polymers, generally between that of the monomer and film or resin polymer. As such, one skilled in the art will appreciate that the monomers react to form the polyurea-urethane so that the monomer is no longer present once the polymer is formed. However, in some compositions described here, both the monomer and the polymer may be present in the formulation before curing, and after curing, residual monomer may remain in the cured polymer. The term polyamine is used in reference to compounds having at least two amine functional groups (primary and / or secondary) per molecule. The term polyol is used in reference to compounds having at least two hydroxyl functional groups per molecule. The term diol is used in reference to compounds having two hydroxyl functional groups per molecule. The term triol is used in reference to compounds having three hydroxyl functional groups per molecule. The terms polyisocyanate and polyisothiocyanate ”, collectively referred to as polyiso (thio) cyanate are used in reference to compounds having at least two isocyanate or isothiocyanate functional groups, respectively, per molecule. The term diisocyanate is used in reference to compounds having two isocyanate functional groups per molecule.
[0023] Polyurethane prepolymers useful in the embodiments of the invention can be produced by reacting a polyol with a polyisocyanate according to methods known in the art. Useful polyols include, but are not limited to, polyester polyols, polyether polyether polyols, polyether polyols, polycarbonate polyols, and polycaprolactone polyols.
[0024] Polycaprolactones can be considered types of polyesters. Preferred polyols for applications requiring thermostability are not oxidative up to 150 ° C, and include, but are not limited to, polyester polyols, polycaprolactone polyols, and polycarbonate polyols. The polyester polyester polyols used in the present invention include, but are not limited to, reaction products of polyhydric alcohols, preferably dihydric alcohols with the addition of some trihydric alcohol, and / or polybasic carboxylic acids, preferably dibasic carboxylic acids with the addition of some acids tribasic carboxylics. The corresponding polycarboxylic acid anhydrides of or corresponding polycarboxylic acids of lower alcohol esters or mixtures thereof are preferred over their free polycarboxylic acid counterparts for the preparation of the polyesters. Carboxylic polyacids can be aliphatic, cycloaliphatic, and / or aromatic in nature. The following are mentioned as non-limiting examples: succinic acid, adipic acid, submeric acid, azelaic acid, sebásic acid, phthalic acid, isophthalic acid, trimellitic acid, phthalic acid anhydride, tetrahydrophthalic acid anhydride, hexahydrophthalic acid anhydride, anhydride tetrachlorophthalic acid, endomethylene tetrahydrophthalic acid, endomethylene tetrahydrophthalic acid anhydride, glutaric acid anhydride, fumaric acid, dimeric and trimeric fatty acids, optionally mixed with monomeric fatty acids,
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8/30 dimethyltereftalate and terephthalic acid-bis-glycol esters. Suitable polyhydric alcohols used to produce such polyesters include, but are not limited to, the following; ethylene glycol,
1,2- and 1,3-propylene glycol, 1,4- and 2,3-butylene glycol, 1,6-hexanediol, 1,8-octanediol, 1,10decanediol, neopentyl glycol, 1,4-cyclohexane dimethanol or 1,4-bis-hydroxymethylcyclohexane, 2-methyl-1,3-propanediol, glycerol, trimethylpropane (TMP), 1,2,6-hexanotriol, 1,2,4-butanotriol, trimethylolethane, and mixtures thereof. Lactone polyesters, such as ε-caprolactone, and hydroxycarboxylic acids, such as omega-hydroxycaproic acid, can also be used.
[0025] Suitable polycarbonate polyols are known and can be prepared, for example, by the reaction of diols, such as 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, 1,10-decanediol, neopentyl glycol, diethylene glycol, triethylene glycol or tetraethylene glycol, and mixtures thereof, with diaryl carbonates, for example diphenyl carbonate, dialkyl carbonate, for example diethyl carbonate, or phosphogen. Suitable polyether polyether polyols are known and include hydroxyl terminated polyethers such as those based on alkylene oxides which include propylene oxide (PPO), ethylene oxide, and polytetramethylene oxide (PTMO). The preferred alkylene oxide is a polypropylene oxide. The polyol may be a polyether polyol having an average hydroxyl functionality of about 2 to 8 with an average hydroxyl equivalent weight of about 500-5000, or a polyether polyol hydroxyl functionality of about 2 to 4 with an equivalent hydroxyl weight approximately 1000-3000. In one embodiment, the polyether polyol includes an average hydroxyl functionality of about 2-3 with an average hydroxyl equivalent weight of approximately 1500-2500.
[0026] Preferred polyols are polycarbonate polyols and polyester polyester polyols with molecular weights of about 500 to about 4000 or 5000, or mixtures of these polyols. The most preferred polyols are poly (hexamethylene carbonate) (PCB) diol and / or triol, polycaprolactone (PCL) diol and / or triol, and poly (hexamethylene adipate) diol and / or triol with molecular weights of about 300 or 500 to about 4000 or 5000. The most preferred polyols for traction ropes for belts and hoses are polycaprolactone diols and / or triois. The most preferred molecular weights for diols range from about 1500 to about 2500 and for triols range from about 1000 to about 4000, or from about 2500 to about 3500. The polyols are dried at a humidity level of less than about 0.03% by weight, and more preferably, at a level of about 0.0150% by weight prior to reaction with the diisocyanates to form the polyisocyanate prepolymers useful for that invention. The polyol used to prepare the prepolymer can be a mixture of at least one triol selected from the above polyols and one or more other polyols, preferably diols. The most preferred diols and triols are the most preferred polyols listed above. The amount of crosslinker triol in the polyol mixture is not particularly limited as it is possible to use any
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9/30 or about 2% to 100% triol. Therefore, in preferred embodiments, the amount of triol in the polyol mixture can preferably be from 5% to about 65% by weight of the total polyol prepolymer component, more preferably from about 15% to about 55%. The remainder of the polyol mixture can be diol. Too little triol leads to insufficient crosslinking and little or no improvement in performance at high temperature, while too much triol leads to processing or mixing difficulties due to increased viscosity of the prepolymer and / or absence of moisture or penetration of the textile reinforcement by polyurethane and / or chemical instability of the mixture. In embodiments of the invention, the prepolymer can be prepared by mixing a diol based prepolymer with a triol based prepolymer. However, the increased viscosity of triol-based prepolymers creates this difficulty. Thus, a preferred embodiment is a prepolymer prepared from a mixture of diol and triol, preferably PCL polyols.
[0027] Polysocyanates useful for the preparation of prepolymers include, but are not limited to, para-phenylene diisocyanate (PPDI), 2,4- and / or 2,6-toluene diisocyanate (TDI), 4,4'-diphenyl methylene diisocyanate (MDI), hexamethylene diisocyanate (HDI), 1,5-naphthalene diisocyanate (NDI), trans-1,4-cyclohexane diisocyanate (t-CHDI), trimethyl xylylene diisocyanate (TMXDI), isophorone diisocyanate (IPDI) and the like, and mixtures thereof. The organic polysocyanates suitable for the polyisocyanate prepolymers used in the present invention are preferably those that have the following characteristics: compact and symmetrical structure for aromatic compounds, or geometric structure trans or trans, trans for aliphatic compounds, for improved phase separation of the resulting elastomers , and high reactivity with amine or water groups in order to eliminate the need for catalysts in the formulations, which would otherwise accelerate the reversal of the resulting elastomers at high temperatures. Preferred polysocyanates as starting components for the preparation of polyurethane prepolymers include, but are not limited to, symmetrical, compact aromatic diisocyanates, including, but not limited to, PPDI, NDI, and 2,6toluene diisocyanate (2,6-TDI) . Oz polysocyanates useful as starting components for the preparation of polyisocyanate prepolymers also include cycloaliphatic diisocyanates with trans or trans, trans geometric configuration. These isomers are generally pure, that is, they exist in the substantial absence of cis-configured isomers, and thus promote good phase separation once cured. These include, but are not limited to, tCHDI, and trans, trans-4,4'-dicyclohexylmethyl diisocyanate (t, t-HMDI). Most preferred for use in embodiments of the present invention in reinforcing traction cords for belts and hoses is PPDI.
[0028] The chain extenders (i.e. dressings) useful in the present invention are selected so as to be capable of adequate reaction time with the prepolymer, and to give the desired urea bonds, with a desired volume of phase separation
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10/30 and hard segment properties. The chain extender may include a compound of aliphatic amines, aromatic amines and mixtures thereof. The chain extender can include an aliphatic amine such as ethylene diamine, 1,3-diaminopropane, 1,4-diaminobutane, hexamethylenediamine, aminoethanolamine, 1,4-diaminocyclohexane, isophorone diamine (IPDA) and triethylenetetramine. The chain extender may preferably be an aromatic amine which may include 2,4-diaminotoluene, 2,6-diaminotoluene, 1,5-naphthalenediamine, 1,4-phenylenediamine, 1,4-diaminobenzene, 4,4'-methylene bis (orthochloroaniline ) (MOCA), 1,4butylene glycol, 4,4 * -methylenebisdianiline (MDA), 3,5-diethyl-2,4-diaminotoluene, diethyl toluene diamine (DETDA), trimethylene glycol diaminobenzoate (TMGDAB), 4,4'- methylenobis (3-chloro-
2,6-diethylaniline) (MCDEA), and 3,3 ', 5,5'-tetraisopropyl-4,4'-methylenebisaniline. Preferred chain extenders are small, compact and symmetrical aromatic diamines. Preferably, the chain extender is not larger than TMGDAB. Preferably, the dressing has no more than two phenyl rings and / or no more than one aliphatic group with three carbons. In a more preferred embodiment, the chain extender is water, including, for example, ambient humidity. Water forms the most compact of the urea bonds, -NH-CO-NH-. The simple urea bonds formed by the reaction with water as a dressing minimize the size of the domains of the rigid segment, while still giving rise to good phase separation and physical properties. This leads to good flexibility of the resulting treated fibers or traction ropes, as desired for use in dynamic rubber applications such as belts and hoses. In addition, such a small rigid water-based segment, combined with a small symmetrical diisocyanate, such as PPDI, results in a good overall balance of properties including high temperature stability, flexibility, modulus and strength.
[0029] Symmetric primary diamine chain extenders useful in the preparation of polyurea-urethane adhesive according to an embodiment of the present invention are those capable of reacting with polyisocyanate prepolymers quickly without the need for catalysts. The symmetry of the chain extenders useful in one embodiment of the present invention provides improved phase separation and thus increased thermal stability of the final PUU elastomers in dynamic applications. Suitable primary diamine chain extenders include, but are not limited to, symmetrical aromatic amines with molecular weights of about 90 to about 500, and mixtures thereof. Examples include: 1,4-phenylenediamine, 2,6-diaminotoluene, 1,5-naphthalenediamine, 4,4'-diaminodiphenyl methane, 3,3'-dimethyl-4,4'-diaminodiphenyl methane, 1-methyl-3, 5-bis (methylthio) -2,6-diaminobenzene, 1methyl-3,5-diethyl-2,6-diaminobenzene, 4,4'-methylene-bis- (3-chloro-2,6-diethylaniline), 4, 4'-methylenobis- (ortho-chloroaniline), 4,4'-methylene-bis- (2,3-dichloroaniline), trimethylene glycol di-paraaminobenzoate, 4,4'-methylene-bis- (2,6-diethylaniline) , 4,4'-methylene-bis- (2,6-diisopropylaniline), 4,4'-methylene-bis- (2-methyl-6-isopropylaniline), 4,4'-diamino diphenyl sulfone, and the like. Symmetric primary diamine chain extenders can optionally be combined
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11/30 with a small amount of secondary diamine chain extenders in order to vary the elastomer characteristics such as hardness. Suitable examples of secondary diamine chain extenders have molecular weights of about 150 to about 500, and include, but are not limited to, N, N'-di-sec-butyl-amino benzene and N, N'-di -sec-butyl-aminodiphenylmethane.
[0030] It may be advantageous to block the isocyanate groups in the prepolymer. Suitable blocking reagents include polyketine, phenols, caprolactam, oximes, triazoles, certain alcohols, and β-dicarbonyl compounds such as ethyl acetoacetate and ethyl malonate. A preferred blocking agent is methyl ethyl ketoxime (MEKO).
[0031] The present invention can also use several other additives in order to assist in the processing of a product from the composition of the invention or to assist in the functioning of a product made from the elastomer of the invention, including antioxidants, plasticizers, fillers, dyes , adhesion promoters, co-reactants, chain extenders, and the like. For example, antioxidants are particularly useful when the elastomeric composition of the present invention is used in a force transmission belt product. Suitable antioxidants include 2,6-di-t-butylphenol and polyalkylene glycol esters of branched substituted alkanoic acid phenols. Examples of antioxidants include ethylene glycol ester 3,5-di-t-butyl-4-hydroxybenzoic acid, trimethylene glycol bis {3- (3-methyl-5-t-butyl-4-hydroxyphenyl) propionate}. Examples of useful or suitable plasticizers include organo-phosphates, dialkyl-ether di-alkyl esters and polyalkylene-ether di-alkyl esters, such as di- or polyethylene glycol di-alkyl esters. Dialkyl-ether diesters include C4 to C12 esters from C1 to C4-ether- or polyether-dicarboxylic acids. Examples of such plasticizers can include esters such as caprate, caprylate, hexanoate, heptanoate, pelargonate, 2 ethylylate, and the like. Examples of such plasticizers can include di-alkyl esters of ethers such as ethylene glycol, propylene glycol, triethylene glycol, tetrethylene glycol, and polyethylene glycols having a molecular weight of up to about 800. Other polyols, polysocyanates, isocyanate-terminated polymers, epoxies, and / or amines can be included, although preferably they are not included, such as adhesion promoters, co-reactants, chain extenders.
[0032] Other added compounds may be useful with the composition of the present invention. These include catalysts to decrease the reaction time of the components. The catalysts can be selected from any desirable compound known in the art such as organometallic compounds, tertiary amines, and alkali metal alkoxides. However, polyurea-urethanes can be prepared with or without catalysts, while polyurethanes based on polyols that do not contain amine-terminated groups are more typically prepared with a catalyst. Suitable organometallic compounds useful as catalysts include, but are not necessarily limited to, lead, mercury, iron, zinc, bismuth, antimony, cobalt, magnesium, soaps
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12/30 vanadium, copper and the like. Examples include organic binders that are 2-20 carbon carboxylic acids, such as lead dibutyl dilaurate, lead dimethyl dilaurate, phenylmercuric propionate, copper naphthenate, bismuth neodecanoate, and the like. In a preferred embodiment, no catalyst is used.
[0033] Thus, a preferred embodiment of an adhesive composition according to the invention comprises polyurethane prepolymer and a curative compact diamine or only water as the curative as the only reactive ingredients.
[0034] Throughout this disclosure, the term yarn treatment is used to indicate a material applied to a yarn and / or yarn filament (which may or may not include a spacer) and which ends up positioned on at least part of the surface of the yarn and / or yarn filament or dimensioned surface and within at least part of one or more interstices formed between such filaments and yarns.
[0035] Many polyisocyanate prepolymers are commercially available and can be beneficially employed in the practice of one or more embodiments of the present invention; and include those generally referred to as free lower prepolymers as described, for example, in US Patent No. 6,174,984 to Peter, US Patent No. 5,703,193 to Rosenberg, US Patent Publication No. 2003/0065124 to Rosenberg et al, and US Patent No. 6,046,297 to Rosenberg et al, in which the level of free diisocyanate in the prepolymer is reduced to a level of, for example, less than 1% of the prepolymer, or less than 0.5%, or less than 0.25%, for example, about 0.1% or less.
[0036] Suitable isocyanate-terminated prepolymers for carrying out the invention include the following commercially available. For example, several useful prepolymers are available under one or more trade names, such as ADIPRENE®, DURACAST, and VIBRATHANE®, from Chemtura Corporation, including Adiprene® LFP 295 OA, a preferred minor free monomer, PPDI-terminated polycaprolactone prepolymer; Adiprene® LFP 3940 A, a PPDI-terminated polycarbonate prepolymer; Adiprene® LFP 195 OA, a PPDI-terminated polyester prepolymer; Adiprene® LF 195 OA, a TDI-terminated polyester prepolymer, and Adiprene® LFP 950A, a PPDI-terminated polyether prepolymer; Adiprene® LF 1600D, LF 1700A, LF 1800A, LF 1860A, and LF 1900A are free minor monomers, useful TDI-terminated polyester prepolymers; and Adiprene ^® LF 600D, LF 750D, LF 753D, LF 800A, LF 900A, LF 950A, LFG 740D, LFG 920, and LFG 964A are useful free minor monomers, useful TDI-terminated polyether prepolymers; Adiprene ^® LFM 2450, Duracast ™ C930, and Vibrathane® 8030 and 8045 are useful MDI-terminated polycaprolactone prepolymers; Adiprene® LFH 120, 2840, and 3860 are useful HDI-terminated prepolymers. Useful prepolymers are also available under one or more of the trade names VUL OLLAN® and BAYTEC® from Bayer Material Science; under the trade name TECHTHANE® by Trelleborg; under the trade names AIRTHANE® and / or VERSATHANE®
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13/30 Air Products and Chemicals, Inc .; polyurethane prepolymers sold under the trade name ECHELON ™ by Dow; and so on.
[0037] With reference to FIG. 1, a typical timing belt 10 is illustrated. The belt 10 includes an elastomeric main body part 12 and a pulley contact part 14 positioned along the inner periphery of the main body part 12. This particular pulley contact part 14 is in the form of alternating cross teeth 16 and parts flush 18 which are designed to fit on a pulley with transverse grooves or sprocket. The tension layer 20 is positioned within the main body part 12 to provide support and strength to the belt 10. In the illustrated form, the tension layer 20 is in the form of several traction ropes 22 aligned longitudinally along the length of the main body part. 12. It should be understood that, in general, any type of tension layer 20 known in the art can be used. In addition, any desired material can be used as the tensioned member, such as cotton, rayon, polyamide, polyester, aramid, steel, glass, carbon, PBO, polyketone, basalt, boron, and even staple fibers oriented to low load capacity . In the embodiment of FIG. 1, the tensioning layer 20 is in the form of illustrated tensile strings 22 made from one or more high modulus fiber yarns, twisted or pleated together into a rope and treated with the PUU treatment adhesive described herein. Preferred high modulus fibers include carbon, polyethylene naphthalate (PEN), poly (p-phenylene-2,6-benzobisoxazole) (PBO), aramid, basalt, boron, or liquid crystal polymer (LCP). In a preferred embodiment, the strings 22 comprise aramid or carbon fiber. More preferably, the rope may be a twisted filament yarn, or a bundle of twisted strands of continuous carbon filaments.
[0038] By aramid is meant a long chain synthetic polyamide, with its amide bonds directly attached to two aromatic rings in either the para or meta position. In the present invention, use may be made, for example, of PPD-T, poly (p-benzamide), copoly (p-phenylene / 3,4'-oxyphenylene terephthalamide), or the like. PPD-T means the resulting homopolymer from the mol-to-mol polymerization of p-phenylene diamine and terephthaloyl chloride, and also copolymers resulting from the incorporation of small amounts of other diamines with p-phenylene diamine and small amounts of other diacid chlorides with terephthaloyl chloride. Commercial aramid fibers suitable for the practice of this invention include those sold under the trade names TEIJINCONEX, TECHNORA, and TWARON by Teijin Limited, and under the trade names NOMEX, and KEVLAR by E.I. DuPont of Nemours and Company.
[0039] Reinforcement fabric 24 can be used and closely fit along alternating teeth 16 and alternating level parts 18 of the belt 10 to form a face cover or tooth cover for the pulley contact part. This fabric can be of any desired configuration such as a conventional fabric consisting of
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14/30 in warp and weft yarns at any desired angle, or may consist of warp yarns held together by bundling ropes, or in a knitted or braided configuration, or a non-woven fabric, and the like. More than one layer of fabric can be used, or combinations of different types of fabric. If desired, the fabric 24 can be cut in a bias so that the threads form an angle with the direction of movement of the belt. Conventional fabrics can be used using materials such as cotton, polyester, polyamide, acrylic, aramid, polyketone, hemp, jute, fiberglass, and several other natural and synthetic fibers including mixtures or combinations thereof. In a preferred embodiment of the invention, the fabric layer 24 consists of a wear-resistant expandable fabric in which at least one of the warp or weft threads is made of nylon. In the preferred form, the fabric layer 24 is made from a nylon 66 stretch fabric, and has an elastomer-free (polyurethane / urea-free) surface for engaging cooperative drive pulleys. The elastomer-free surface may include a polymeric film laminated to the fabric. The fabric can also be treated with the inventive PUU adhesive rope if desired.
[0040] With reference to FIG. 2, the standard V-toothed belt 26 is illustrated. The V-belt 26 includes an elastomeric body part 12 similar to that of FIG. 1 and reinforcement tension layer 20 in the form of ropes 22, also similar to that as illustrated in FIG.
1.
[0041] The elastomeric body 12, the tensioning layer 20, and the ropes 22 of the V-belt 26 can be constructed from the same materials as described above for FIG.
1. It should be noted that the tension layer 20 may optionally include an elastomeric composition or rubber material that is different than the rest of the main body part in order to provide a transition layer in terms of modulus or other property and / or to act as an adhesive layer between rope and main body. The optional rubber adhesive member may, for example, be of a higher modulus than the main body as described in US Patent No. 6,616,558 to South, the contents of which are incorporated herein by reference.
[0042] The V-belt 26 also includes part of contact with the pulley 14 as in the force transmission belt of FIG. 1. In this modality, however, the contact parts of the pulley 14 are the two juxtaposed sides of the belt, projected into a V-pulley. The lower surface of the V-belt 26 is in the form of alternating depression surfaces between the teeth or rails 28 and projections 30. These alternating toothed depression surfaces 28 and projections 30 can follow a generally sinusoidal direction, as illustrated, which serves to distribute and minimize the bending stress as the pulley contact part 14 passes around the pulleys and pulleys. Several profiles of teeth that deviate from sinusoidal in different ways are also useful. However,
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15/30 rails 28 and projections 30 are optional. Included in the V-belt category are those V-belts designed for continuously variable transmission (CVT) applications, which often exhibit a belt body relatively wider than the belt thickness.
[0043] With reference to FIG. 3, a multi-V ribbed belt 32 is illustrated. Multi-V ribbed belts 32 include elastomeric main body part 12 as in the belts of FIGs 1 and 2 and also include tensioning member 20 preferably in the form of ropes 22, also as previously described. The contact part of the pulley 14 with longitudinal grooves is in the form of several suspended areas or vertices 36 alternated with several areas of trough 38 having opposite sides that define motor surfaces 34 of the belt 32. In each of these cases of FIGs 1-3 , the pulley contact part 14 is integrated with the main body part 12 and can be formed from the same elastomeric material to be described in greater detail below, or in layers of different material. While the present invention is illustrated with reference to the modalities shown in FIGs 1-3, it should be understood that the present invention should not be limited to these particular modalities or shapes as illustrated, but is very applicable to any belt constructions within the scope of claims as defined below.
[0044] Carbon fibers are typically made by carbonizing another fiber such as polyacrylonitrile fiber, where, during the carbonization process, the diameter of the fiber is substantially reduced. The carbon yarn is generally characterized by the number of fibers contained in it, and not by denier or TEX title. A number nomenclature and the letter k are used to indicate the number of carbon fibers in a strand. Certainly, carbon fiber can be characterized by such another term when desired. In a 3k carbon fiber yarn, k is an abbreviated designation for 1000 fibers ”, and 3 indicates a multiplier. Thus 3k carbon yarn identifies a yarn of 3000 fibers or filaments. The filaments are generally of sufficient length to be considered continuous. Like other textile materials, several carbon fibers are combined to form a yarn. A wire can be combined with another wire to form a larger wire, and the wire or bundles of wire can be twisted together to form a rope. The carbon fiber can have an extremely small diameter that can vary from about 4 to about 8 microns, or about 5 to 7 microns. Individual fibers are easily broken when a filament is processed to form a string. For this reason, it is desirable to minimize the number of mechanical operations to which the filament is subjected when producing a rope. For example, twisting several threads together to form a bundle of threads and inversely twisting the bundles of thread so folded to form a string are mechanical operations that break the individual fibers. The number of breaks is reduced by reducing the number of twisting operations. To form a desired rope size it may include grouping in different bundles 870190035454, from 12/12/2019, pg. 22/41
16/30 the wires with the lowest filament count, for example, five 3k wires to obtain 15k (designated 3k-5), or three 6k wires to obtain 18k rope (designated 6k-3). Preferably the torsion level is not too high so as not to damage the fibers. Thus a preferred torsion level is from 0.75 to 2.5 turns per inch, or up to about 2 turns per inch. The final carbon fiber bundle can be from 3k to 60k, depending on the desired application.
[0045] Fiber producers often coat the fibers with a spacer that acts to lubricate the fiber and inhibit breakage as the fiber is processed into the threads and wound in coils. In some cases, the spacer may have a chemical structure that is compatible with an adhesive used to treat a rope for inclusion in a force transmission belt. The types of spacer used by carbon fiber producers include, for example, epoxies, mixtures of epoxy with polyurethane, organosiloxanes, polyamide-imides, and others. The spacer can be present at a weight of about 0.1 to about 2.5% based on the final weight of the yarn. It is believed that the modalities of the invention described herein are not particularly sensitive to the type or level of spacer that may be present in the carbon fiber. It may be that the primary way of bonding the PUU adhesive treatment to the carbon beam fiber is physical chaining rather than chemical bonding. Also, the present invention can involve using a solvent to apply the PUU adhesive to the carbon beam fiber, and the solvent can penetrate or even remove the spacer if desired.
[0046] The body part of the elastomeric belt (or other articles) may be vulcanized rubber or another cross-linked elastomer such as molten polyurethane (PU); or it can be thermoplastic elastomer (TPE) or thermoplastic polyurethane (TPU). The treatment of the rope with PUU disclosed in this is particularly compatible with a cast polyurethane or PUU belt body, and can be advantageously used with it without the need for any additional adhesive treatment. Likewise, the treatment of the rope with PUU may be compatible with TPE and TPU elastomers and may not need any additional adhesive treatment for use with it. In the case of vulcanized rubber articles, it may be advantageous to include one or more additional adhesive treatments to provide an improved bond between the PUU-treated tensile rope and the vulcanized elastomer. Such additional adhesive treatment will be referred to herein as a coating or an adhesive coating. It may be advantageous to use two different adhesive coatings to provide maximum bonding between the PUU and a rubber material of the belt body.
[0047] Regarding the elastomeric main body for use with a PUU-treated traction rope modality, useful compositions of molten PU or PUU that can be used in the practice of various modalities of the present invention, and such compositions and methods are described, for example, in US Patent No. 5,231,159 to Patterson et al. and Pa
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17/30 try US No. 6,964,626 by Wu et al, the content of which is incorporated herein by reference. PUU typically has better dynamic properties over PU due to increased phase separation, more rigid segments, etc., and PUU is therefore preferred for applications in high-performance belts.
[0048] The elastomeric body can be formed from TPE or TPU using, for example, thermoplastic lamination processes for long-length belts, or other suitable molding processes. Types of TPE that can be useful in various modalities include unlimited mixtures of polystyrene-elastomer block copolymers, polyester block copolymers, polyurethane block copolymers, polyamide block copolymers and polypropylene / EP copolymer. Types of TPU that may be useful in a variety of embodiments are not particularly limited, but may include similar chemistry as discussed above with respect to fused polyurethanes, such as thermoplastic polyester urethanes or thermoplastic polyether urethanes. Thermoplastic belt modalities can have the general shape of the toothed belt of FIG. 1, for example, an endless belt, both by molding and by joining two belt ends together. The modalities can have two ends that can be fixed to several associated mechanisms, for example, in transmission, transport, fixation, or positioning applications.
[0049] In each of the cases of FIGS. 1-3 demonstrated above, the main body part of the belt 12 can be formed of any conventional and / or suitable composition of cured elastomer, and can be the same or different from that described below in relation to the optional adhesive rubber member comprising the tensor layer 20. Suitable elastomers that can be used for this purpose include, for example, polyurethane elastomers (also including polyurethane / urea elastomers and so-called gums) (PU), polychloroprene rubber (CR), acrylonitrile rubber butadiene (NBR), hydrogenated NBR (FTNBR), styrene-butadiene rubber (SBR), chlorosulfonated alkylated polyethylene (ACSM), polyiepichlorohydrin, polybutadiene rubber (BR), natural rubber (NR), and ethylene alpha olefin elastomers such as ethylene propylene (EPM) copolymers, ethylene propylene diene (EPDM) terpolymers, ethylene octene (EOM) copolymers, ethylene butene (EBM) copolymers, terpolymers ethylene octene (EODM); and ethylene butene terpolymers (EBDM); ethylene vinylacetate (EVM) elastomers; ethylene methylacrylate (EAM); and silicone rubber, or a combination of any two or more of the above.
[0050] To form the body part of the elastomeric belt 12 (or other article) according to an embodiment of the present invention, the elastomer (s) can be mixed with ingredients of conventional rubber compounds including fillers, plasticizers, stabilizers, agents vulcanization / dressings and accelerators, in amounts conventionally used. For example, for use with ethylene-alpha elastomer
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18/30 olefin and diene elastomers such as FTNBR, one or more metallic salts of alpha-beta organic acids can be used in amounts now conventionally used to improve the dynamic performance of the resulting article. Thus zinc dimethacrylate and / or zinc diacrylate can be used in such compositions in amounts of about 1 to about 50 phr; or alternatively from about 5 to about 30 phr; or from about 10 to about 25 phr. These materials also contribute to the adhesion capacity of the composition, and increase the overall crosslink density of the polymer with curing with peroxide or related agents through ion crosslinking, as is now well known in the art.
[0051] Someone skilled in the relevant technique would readily appreciate any number of compositions suitable for use in or as the elastomeric parts of the rubber articles useful here. Several suitable elastomer compositions are described, for example, in The R.T. Vanderbilt Rubber Handbook (13th ed, 1996), and in relation to EPM or EPDM compositions and such compositions having a high modulus of particular tensile properties, are further determined in US Patent No. 5,610,217, and 6,616,558 respectively, the content of which, with respect to various elastomer compositions which may be suitable for use in forming parts of the force transmission belt body, is specifically incorporated herein by reference. In an embodiment of the present invention associated with applications in automotive accessories, body parts of the elastomeric belt 12 may be formed from a suitable ethylene alpha olefin composition, such as an EPM, EPDM, EBM or EOM composition.
[0052] The body part of the elastomeric main belt 12 can furthermore be loaded with staple fibers as is well known in the art, using materials such as including, but not limited to, cotton, polyester, fiberglass, aramid and nylon , in forms such as staple or sectioned fibers, in flake or pulp, in amounts generally employed. In a preferred embodiment relating to profiled multi-V ribbed belts (for example, by cutting or shredding), such fiber loading is preferably formed and arranged in such a way that a substantial part of the fibers are formed and arranged so that they are in a direction generally transverse to the direction of movement of the belt. In molded multi-V ribbed belts and / or synchronized belts made according to flow methods, however, the fiber load would generally not have the same degree of orientation.
[0053] For use in rubber belts, the PUU-treated ropes of the present invention can advantageously be coated with a secondary adhesive in order to primarily coat the outer surface of the rope bundle. Such an adhesive is here called an adhesive coating.
[0054] The coating is generally applied at a level in the range of about 1% to
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19/30 about 10% dry weight, based on the final weight of the rope so treated. Examples of useful adhesive coatings are found in the art and include without limitation several compositions sold under the trade names CHEMLOK or CHEMOSIL by Lord Corporation, and several compositions under the trade name CILBOND by Chemical Innovations Limited (CIL). The particular coating can be chosen to be compatible with both the underlying adhesive treatment and the rubber belt body and to have other desired properties such as heat resistance, environmental resistance or the like. It may be advantageous to apply two separate adhesive coating compositions. If the PUU-treated rope is only partially impregnated, a first coating can be used to fully impregnate the rope and a second coating to coat the outer surface of the treated rope bundle. For some combinations of PUU-treated rope and a rubber belt body composition, it may be advantageous to use a two-layer coating to ensure good bonding, for example, since PUU can be more polar than many elastomers.
[0055] Thus, the invention provides a method for preparing a high-modulus traction rope, such as carbon rope, at least partially filled or impregnated with a PUU binder. Compared to the use of raw carbon rope (or other high-modulus rope) in cast PU straps, the invention provides independent control of rope properties. For example, the PUU binder used on a carbon rope can be selected to be softer than the cast PU of the belt body. The invention can thus improve the properties of the belt operation without negatively impacting the dynamic load or flexing capacity. The invention can also improve the processing and the product produced in low pressure melting operations and in processes in which the melting resin has a faster gel time or higher viscosity, because the rope is already impregnated with a PUU binder, which gives the string integrity and prevents fraying with cutting, if the subsequent melting resin also penetrates the string or not. The ability to treat already twisted carbon fiber with a low viscosity adhesive can advantageously produce a generally more rounded and more uniform rope than previous treatment methods that required spreading over the fibers during treatment, followed by twisting.
[0056] In an embodiment of a cast PU article or belt having a high modulus tooth or PU body compound, the traction rope can be treated with a polyurethane prepolymer solution and cured with a smaller curative molecule than Fused PU, yielding a binder with a smaller similar or at least compatible chemistry module. Thus, the complex modulus of the rope can be reduced (that is, the flexibility of the rope can be increased) without negatively affecting the integrity of the compound. There is good adhesion between the filled string and the body / tooth compound. Preferably the body
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20/30
Composite PU is replaced inside the rope with a similar prepolymer, but with a smaller, more compact and rigid segment or bandage such as water, in order to provide a softer rope treatment with less modulus. Thus, the curative adhesive cord may preferably be water, while the article body may use the same prepolymer, but a more conventional chain extender such as polymeric or similar diamine or diamine.
[0057] To apply PUU adhesive resin to the fibers of the tensile rope, the ingredients of the adhesive composition can be dissolved or suspended in a suitable solvent. A suitable solvent is one that will dissolve the prepolymer and also moisten the fibers of the rope for good impregnation. A low contact angle between the solvent or the adhesive solution and the fiber is desirable. Suitable solvents include, without limitation, tetrahydrofuran (THF), dimethyl sulfoxide, dimethyl formamide, N-methylpyrrolidone (NMP), toluene, xylene, benzene, acetone, methyl ethyl ketone, methyl isobutyl ketone, and the like. For the treatment of carbon fiber strings according to an embodiment of the invention, preferable solvents include THF and toluene.
[0058] In a preferred embodiment, a minor PPDI / polycaprolactone free prepolymer is dissolved in a solvent, such as toluene or THF, at a predetermined concentration that can vary from 10-50% by weight, or from 20% to 40% % by weight, and the solution is added to an immersion tank. The rope, which can be preferably in twisted form, for example, from 0.75 to 2.5 turns per inch for carbon fiber rope, is pulled through the dip tank and then through an oven, where, the solvent is discharged. Alternatively, the rope can be immersed and dried in a non-twisted form, to cover the fibers for maximum penetration, and then be twisted. After passing through the oven, and removing more of the solvent, the prepolymer is allowed to react with water. The rope can be immersed in a water bath to improve the reaction before winding, for example, to prevent the rope from sticking to the coil. The water bath can, but does not need to contain a chemical, such as a catalyst, that accelerates the formation of a urea coating on the outside of the rope. Likewise, heat, for example, in a dry oven, can be used to accelerate the formation of the urea coating. The prepolymer on the inside of the string will heal with ambient humidity. This healing on the inside of the rope can take several days, but the rope can be used in a product made with molten PU at any time after treatment, whether fully cured or not. The rope will continue to heal as the product is cured. Even a fully cured rope treatment will generally have enough reactive groups to continue to heal and bond with a product's body material during product curing. Water acts as a dressing by reacting with isocyanate groups in the prepolymer. The isocyanate reacts with water to form carbamic acid. Carbamic acid dissociates
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21/30 to form an amine and carbon dioxide. The amine will react with isocyanate to form a di-substituted urea bond and further reaction to condensation. This reaction creates a very compact rigid segment with urea connections.
[0059] According to an embodiment of the invention, the PUU treatment can advantageously be 20-40% solids and preferably of low enough viscosity to fully penetrate the fiber bundle during an immersion treatment whether it is twisted or not. After the solvent is removed by drying, the PUU preferably lines the individual fibers of the bundle, but does not need to completely fill the interstices of the rope. It may be advantageous for PUU resin to occupy about 20% to about 99% or 100% of the interstices, depending on the intended use of the treated rope. In particular, for use in cast polyurethane articles such as energy transmission belts, only partially fill the interstices, for example, from 20% to 90%, or 30% to 80% fill, or 40% to 60 % fill, may leave interstices or voids that can be penetrated by the molten PU of the belt body, thus providing a level of mechanical adhesion without making the rope excessively rigid and still benefiting from the use of PUU treatment. When a PU cast belt body thus penetrates the voids in the rope treated with PUU materials, the PU and PUU can be in close contact, facilitating the chemical bond between them. On the other hand, when the rope must be covered with additional adhesives for chemical adhesion as it should be done for bonding certain rubber articles, a rope more fully impregnated may be more suitable, for example, from 40% to 100% , or 60% to 99% fill. The levels of contamination indicated, for example, as weight% of adhesive contamination based on the weight of the treated rope may vary depending on the degree of voids or interstices in the twisted rope. The level of contamination of the PUU adhesive on the rope can vary from 6% to 25%, or 8% to 22% or from 10% to 15%.
[0060] Belts of cast urethane according to a modality using the inventive traction ropes can be made according to known methods such as those described in the references already incorporated in this by reference. Likewise, TPE or TPU belts can be made by known methods, including continuous rolling methods that produce belts having two ends, rather than infinite belts. The two ends can be joined according to known methods to produce infinite TPE or TPU belts. Rubber belts can be built on a mandrel, cured, and cut to width according to methods known in the art.
[0061] It should be understood that reinforcement cords according to one embodiment of the invention can be used in various types of articles of elastomeric compounds, such as belts for energy transmission, transport or transfer belts, strips,
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22/30 tires, hoses, air springs, vibrating platforms, etc.
Examples [0062] The following illustrations and examples are not intended to limit the invention, but to demonstrate its usefulness in several modalities. Examples demonstrate the use of the invention in cast polyurea-urethane belt applications, TPU belt applications, and rubber belt applications.
Illustration I [0063] A pair of 12k-1 wires identified as G30 700 12k HTA-7C from Toho was twisted in opposite directions at a level of 2.0 ± 0.1 turns per inch to form 12k S and Z carbon strings A portion of the raw twisted rope was used to produce a 8 mm gap cast PU timing belt plate according to the method of US Patent No. 5,807,194 to Knutson et al, referred to in this as Comparative Example 1 ( Ex. Comp. 1). Another part of the rope was treated according to an embodiment of the present invention and then used to produce a second plate of inventive toothed belts with an 8 mm gap, referred to herein as Example 2 (Ex. 2).
[0064] For the PUU adhesive treatment of Ex. 2, a PPDI-terminated di- and tri-functional polycaprolactone prepolymer mixture with a final functionality of approximately 2.1 was added to the toluene solvent to produce a solution with 33 % by weight of solids for the immersion tank. The raw twisted rope was immersed and then the solvent was discharged by passing the damp thread through an oven. Immediately after leaving the oven, the rope was immersed in a water bath, dried in the air, and then wound in a coil. The contamination of solids was determined for immersed S and Z ropes at 16.1 and 14.0% by weight, respectively. The rope stiffness was measured immediately after winding and after resting in a high humidity environment during the night. String stiffness was measured on a Tinius Olsen Stiffness Tester according to the ASTM D747 procedure, but based on the actual peak flexural strength in units of pounds strength (or kilograms strength) for five parallel strings tested at a deviation of 12 , 7mm over a deflection in the range from zero to 65 °. The initial stiffness of Ex. 2 was 0.49 and 0.73 lbf, respectively. After standing overnight, stiffness was measured at 1.14 and 1.08 lbf, respectively. Water curing can be relatively slow, resulting in a gradual change in stiffness over hours or even days. Based on the recorded equivalent cross section of carbon in the string (0.00455 cm ² ) and the area of the final cross section of the rope in the straps (0.00665 cm ² ), the void volume in the rope was calculated to be about 31.6 % of final cross section. The treatment weight% defined for the S and Z ropes thus corresponds to the interstices of the rope being filled in about 55 to 60 percent with PUU resin. Inspection of the resulting strings showed that the outer layer of fibers was lightly coated leaving enough interstitial space for additional impregnation
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23/30 by the cast PU during the construction of the belt, resulting in very good adhesion of the rope to the belt body. Tensile testing of the treated rope versus the raw rope yielded a tensile strength of 148 lbs for the raw rope and 222 lbs for the treated rope, an improvement of 50%. This dramatic improvement in the tensile strength may reflect the difficulties in the tensile test of raw yarns, and the improvement in the operational properties of the treated yarn. Inspection of the cross sections of the belt under high magnification revealed that the cast PU resin had substantially and completely filled all remaining interstices after adhesive rope treatment. The fused PU resin formulation used to produce the belts was based on a TDI-terminated polyether prepolymer based on TMGDAB-cured polytetramethylene ether (PTMEG).
[0065] After production of the belt, rope samples were removed from raw and treated wire belts and subjected to the rope stiffness test. Two samples of parallel strings were used instead of the common five. The rope of the Ex. Comp. 1 was more rigid than the treated rope, starting from Ex. 2, that is, 0.66 vs 0.52 lbf, respectively. The treatment of the inventive rope thus lowered the static bending stiffness of the rope on the belt by approximately 20%.
[0066] The dynamic belt flexion test at two frequencies and temperatures also showed a significant difference in the module between the raw and the treated rope. The results for this test are shown in Table 1. In all test conditions, the belt flexion modules were smaller for the Ex. 2 treated rope belt than for the Ex. Comp raw rope belt. 1. Rope treatment with inventive PUU adhesive treatment has reduced the dynamic bending modulus of the rope.
Table 1
Dynamic bending test at 3 points Comp. Ex. 1 Ex. 2 Ex. Reason 2:Ex. Comp. 1 K * at 23 ° C, 0.1 Hz (N / mm) ¹ 7.86 5.00 0.64 K 'at 23 ° C, 0.1 Hz (N / mm) ² 7.59 4.88 0.64 K ”at 23 ° C, 0.1 Hz (N / mm) ³ 2.03 1.09 0.53 K * at 100 ° C, 0.1 Hz (N / mm) 5.96 3.65 0.61 K 'at 100 ° C, 0.1 Hz (N / mm) 5.7 3.62 062 K ”at 100 ° C, 0.1 Hz (N / mm) 1.02 0.49 0.48 K * at 23 ° C, 1.0 Hz (N / mm) 8.40 5.14 0.61 K 'at 23 ° C, 1.0 Hz (N / mm) 8.13 5.05 0.62 K ”at 23 ° C, 1.0 Hz (N / mm) 2.12 0.97 0.46 K * at 100 ° C, 1.0 Hz (N / mm) 5.91 3.71 0.63 K 'at 100 ° C, 1.0 Hz (N / mm) 5.4 3.68 0.63 K '' at 100 ° C, 1.0 Hz (N / mm) 0.93 0.46 0.49
¹ K * is complex stiffness.
² K 'is storage or elastic stiffness.
³ K is inelastic loss or stiffness.
[0067] The PUU treatment of Ex. 2 was also mixed into THF at a concentration of 25% solids by weight and used to melt a film in a window
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24/30
GO. The resulting PUU film was 0.018 inches thick. It was placed in an FTIR instrument to follow the evaporation of the solvent and the reaction of the NCO groups with water. The peak area of NCO was reduced by 50% after about 200 minutes, and substantially disappeared after about 500 minutes. An attempt was made to melt a thicker film from the inventive treatment and the PUU melted from the belt body for tension testing. Although some bubbles were observed, the resulting films were considered sufficient for a comparison of the tensor test. The water-cured adhesive treatment exhibited a modulus about 2/3 less than that of the TMGDAB-cured belt material, an elongation around it, and a tensile force about 1/3 less. Thus, according to one embodiment of the invention, a reinforcement rope can be treated with a PUU analogue subjected to the wet curing of a melted dicured PUU amine composition to obtain a relatively smaller modulus, more flexible rope with much equivalent tensile strength better, and with excellent compatibility with the cast PUU.
[0068] Ex. 2 belts have undergone several tests, demonstrating certain advantages over Ex. Comp. 1. The resistance to breakage of the belt was measured by mounting a belt on two sprockets with 60 grooves, and traction on a conventional tension tester machine at 25.4mm / min with an optional extensiometer attached. The flexion conditioning of the belts was carried out in a two-point format with two pulleys with 22 slots driven at 3600 rpm with a deadweight tension of 74.84 kg (165 pounds) for 168 and 336 hours. The tensile force retained after (ie, post) flexion conditioning is reported in Table 2. In a posterior tilt test, belts were flexed backwards three times at the same location on the belt around a tube of a given diameter and then tested for tension with the damage location in the deviation between the two pulleys. The tensile strength retained after posterior flexion is also reported in Table 2. Static chord adhesion test (pulling a short length of two strings off the belt) and a static tooth shear test on the belts showed no significant difference between o Ex. Comp. 2 and Ex. 1. Finally, the dynamic test of the belts was carried out on a dynamometer (Test on the Dynamometer) to evaluate the load capacity of the belt, dynamic adhesion, durability and the like. The dynamometer test used an 18mm belt, with 140 teeth, 8mm GT® profile passed at 19 hp and 2000 rpm, on two pulleys with 24 grooves with 96.61 kg (213 pounds) of dead tension at room temperature. Two different known tests were used for significantly different results. The average of the lives of two belts was calculated for each result reported in Table 2.
[0069] It can be seen from Table 2 that the inventive belt has slightly greater tensile strength initially and after flexion conditioning than the control belt. This can be attributed to the treated rope having improved operational tolerance in relation to
Petition 870190035454, of 12/12/2019, p. 31/41
25/30 tion to the raw rope. However, the posterior tilt test most clearly shows a dramatic advantage of the softer PUU-treated rope over the raw rope. While the raw rope loses half of its strength after the subsequent 27 mm flexions, the inventive rope does not suffer loss of strength. At greater posterior flexions, the inventive thread loses strength, but at a much lower rate than the control belt. Thus, the inventive belt performs similarly under 10 mm bends to the control under 27 mm bends. It can also be seen from Table 2 that the Ex 2 belts performed slightly better on average than the control belts in the Dynamometer Test (the tooth shear failure mode was observed for all belts). Thus, treatment with soft PUU adhesive provides significant improvement in operational tolerance without loss of other performance characteristics such as adhesion or load capacity.
Table 2
Tensile strength of test belts (belt width in lbf / inch) Ex. Comp. 1 Ex. 2 Initial Tensile Force 9406 11552 Post-flexion conditioning (168 hours) 9500 10000 Post-flexion conditioning (336 hours) 9400 10000 After bending after 27 mm in diameter 4800 10900 After flexion after 17 mm in diameter 2600 7000 After bending after 10 mm in diameter 2000 4600 After bending after 4.5 mm in diameter 1700 3700 Dynamometer Test In Test # 1 (average life in hours) 316 379 In Test # 2 (average life in hours) 43.4 68.4
Illustration II [0070] In a second series of tests, the Ex. Comp. 3 and Ex. 4 were built with a TPU belt body based on polyester and nylon woven fabric on the tooth surface. These toothed belts were endless with a T10 metric profile (10 mm gap, and trapezoidal shaped tooth) and cut to a width of 25 mm. The Ex. Comp. 3 was built with a conventional steel rope, and Ex. 4 used the same inventive rope as Ex. 2 above. The specimens of these two belts were subjected to a rope adhesion test, the results of which are shown in Table 3. Table 3 shows that the inventive rope treated in Ex. 4 has an adhesive performance equal to or better than the conventional rope used in Ex Comp. 3, demonstrating that one embodiment of the invention is suitable for use in TPU belts.
Table 3.
Ex. Comp. 3 Ex. 4 Adhesion to the wire (N) 977.1 1060.4 Fail mode Wire break Sticker
Illustration III [0071] For this series, Torayca T700GC 41E 12k-1 yarns were used to produce toothed PUU belts with 8 mm intervals, as in Illustration I. The colors
Petition 870190035454, of 12/12/2019, p. 32/41
26/30 control lines made with raw twisted wire are referred to as Ex. Comp. 5. A portion of the rope was treated in accordance with another embodiment of the present invention and then used to produce a toothed belt plate with an inventive 8 mm gap, referred to in this as Ex. 6. PUU adhesive treatment of Ex. 6 comprised a polyester / TDI prepolymer, with a MEKO blocking agent in the isocyanate groups. The dressing was diamine, DETDA. The liquid mixture of blocked prepolymer and dressing was impregnated into the carbon fiber bundle under pressure, although the use of a solvent as described above would have been easier. The belts were again evaluated for tensile decline in the Flexion Conditioning Test, but at a tension of 68.03 kg (150 pounds) of deadweight, and for operational damage by both posterior inclination and anterior inclination in tubes of various diameters. The results are shown in Table 4. It can be seen that this modality also presents improved operational resistance in relation to the control. In another example of using a blocked prepolymer, called Ex. 7, the dressing was diamine, MCDEA, but no data on the belt is available.
Table 4
Belt breaking strength test (belt width lbf / inch) Ex. Comp. 5 Ex. 6 Initial tensile force 12100 10100 Post-flexion conditioning (2 hours) 8800 10100 Post-flexion conditioning (24 hours) 8600 10200 Post-flexion conditioning (48 hours) 8000 10200 Post-bending conditioning (190 hours) 8000 9900 After bending after 50 mm in diameter 5800 10300 After bending before 37 mm in diameter 5500 10600
Illustration IV [0072] In this set of examples, a modality using rope treated with carbon PUU is compared to a conventional carbon rope treated with RFL on a rubber toothed belt. A 12k1 carbon bundle was again treated with PUU as in Ex. 2 of Illustration I, but in addition, the treated rope was immersed in a Cilbond 81 adhesive coating and dried again. For a control, a 12k rope treated with X-HNBR-RFL was prepared according to the methods of US Patent No. 6,695,733 (see Table 1 therein and associated text, which is incorporated by reference), and also coated with Cilbond 81. Toothed belts were made according to well-known methods, including the application of a nylon fabric sleeve to a 97 groove mandrel (9.525mm gap), curving helically by winding both twisted S and Z at 18 total threads per inch producing adequate distance through which the rubber can flow, applying a layer of sulfur-cured HNBR rubber, and curing under pressure and temperature so that the rubber flows through the rope, press the fabric into the grooves and form the teeth as the compound is cured. After removing the resulting sleeve from the mandrel, individual belts
Petition 870190035454, of 12/12/2019, p. 33/41
27/30 were cut to 19 mm wide. Control belts with RFL-treated rope are designated Ex. Comp. 8, and the inventive belts with PUU-treated rope are designated Ex. 9. Several belt tests were performed and the results are shown in Table 5. The tensile strength was measured as previously described, as well as the rope adhesion. The coating adhesion test involved removing the fabric tooth from the belt, producing a minimum in the region of the web where the coating-yarn adhesion is primarily measured and a maximum in the region of the tooth where the coating-rubber adhesion is primarily measured. The temperature of the moving belt was measured over a period of 24 hours in an unloaded bending test device. The Flexion Test is illustrated in FIG. 4. A 97 tooth synchronized belt was passed over a drive pulley 50 with 19 grooves, two drive pulleys 52 and 54, with 19 grooves and 20 grooves respectively, two later tension pulleys 56 (50 mm in diameter) and one tensioner 58. A tension of 200N was applied with tensioner 58 by a pending weight. The Flexion Test was performed at 6200 rpm at room temperature.
[0073] Table 5 shows that the rubber belts according to the invention behave comparable to the control belts. It was observed that in some cases, the original inventive belts tested inferior to the control, while the inventive belts aged in contact with air were comparable, for example, in the rope adhesion test and in the dynamic tooth durability test. This is believed to be due to the slow curing of the PUU material and indicates a possible advantageous use of a post-cure treatment or addition of a catalyst to the adhesive, for some embodiments of the invention. In the bending test device, the inventive PUU-treated rope resulted in lower belt movement temperatures than RFL-treated rope, which is believed to be attributable to the improved dynamic properties of PUU over RFL.
Table 5
Ex. Comp. 8 Ex. 9Original Air-aged Original Air-aged Tensile force (kN / 20 mm) 43 44.5 31.5 32.5 Wire Adhesion (N) 1050 1200 650 1050 Adhesion (N) to the Wire Jacket (weft) 28 26 26.5 25 Adhesion (N) to Tooth Coating 140 110 100 110 Belt passing temperature (° C) 112 108 - 102 Dynamic tooth durability (cycles) 3000 10000 300 100000
Illustration V [0074] This series of examples is largely a repeat of Illustration I, but with 27.5% solids in the adhesive solution, variations in adhesive contamination levels, and with a variety of other carbon rope sizes, including a bundle of
Petition 870190035454, of 12/12/2019, p. 34/41
28/30 much larger twisted carbon rope, 12k-4 and 1.2-1.3 turns per inch. An immersion in water after treatment was not used. As before, a portion of the raw twisted strings (both S and Z) was used to produce comparative cast PUU timing belts, according to the method of US Patent No. 5,807,194 to Knutson et al. As shown in Table 6, the treated 12k-4 carbon ropes (made from Toho 12k wires from Illustration I) were placed on straps with a 14mm gap of HTD® profile. The 14 mm belts in this illustration used the same formulation of cast PUU resin for the belt body as in Illustration I above, that is, a TDI-terminated polyether prepolymer based on PTMEG, cured with TMGDAB. As shown in Table 6, Ex. 11 and 12 strings 12k-4 showed improved tensile strength over Ex. Comp. 10. The increase in rigidity in relation to the 12k-1 ropes in Illustration I is commensurate with the increased diameter of the rope. The increase in the tensile strength of the strings after treatment is comparable to that observed above in Illustration I. The immersion contaminations ranged from 10.3 to 14% for this 12k-4 rope pass.
[0075] Finally, note that the operational test for the Ex. 11 and 12 belts again shows great improvements in the tensile strength retained after posterior flexion on the pulleys of decreasing size, in relation to the Ex. Comp. 10.
Table 6
Ex. Comp. 10 Ex. 11 Ex. 12 Carbon rope construction 12k-4 12 k-4 Contamination with solids (S, Z) (%) - 11, 12.8 Tensile Force (average) (lb) 530 926 Rigidity (S, Z) (lbf, after 23 d) - 6.17, 6.22 Testing tensile strength on the belt (14mm HTD) (belt width in lbf / inch) Made in cell 3 Cell 3 Cell 1 Initial tensile force (inverted on 102 mm diameter pulleys) 21308 20469 17657 After flexions later than 43mm in diameter 11441 16526 16763 After bending after 33 mm in diameter 8159 13930 15284 After bending after 28 mm in diameter 5735 11632 14480
[0076] The results shown in Table 7 indicate that the invention is applicable in the production of a variation of rope sizes, in this illustration from 12k-1 to 18k-1. The results in Table 7 also show a wide variation in contamination values of solids for the resulting strings, from 6.2% to 17%. In each case, the inventive yarn example shows significant improvements in tensile strength compared to raw rope, which is most likely indicative of improved operation in the tensile test. It is also noteworthy that the tensile strength of the inventive strings was independent of the level of contamination of solids, so a single mean value is reported for both S and Z strings. The string stiffness appears to increase with string size and with solid contamination. .
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29/30
Table 7
Ex. Comp.13 Ex. 14 Ex. Comp.15 Ex. 16 Ex. Comp.17 Ex. 18 Ex. Comp.19 Ex. 20 Carbon rope construction Toho12k-1 Toho12k-1 Graffiti12k-1 Graffiti12k-1 Grafil 15k-1 Grafil 15k-1 18k-1 Grafil 18k-1 Grafil Contamination with solids (S, Z) (%) - 6.2,17 - 8.8,12 - 7.8,14.9 - 6.2,15.7 Tensile Force (average) (lb) 157 281 149 274 216 329 230 380 Rigidity (S, Z) (lbf, after 23 d) - 0.77,1.27 - 0.91,1.07 - 1.09,1.64 - 1.1,1.77
[0077] Microscopy was performed on several examples of the rope as prepared and on cross sections of the belt after fusion or formation. The outside of the inventive rope is generally free of a polymeric surface. The outer fibers of the rope generally appear to be well coated with PUU, but not necessarily bonded, but neither are the outer fibers prone to fraying or fraying when cutting the rope. The inner part of the rope is usually very well penetrated with PUU adhesive, but not necessarily completely filled. The material of the belt body in the cast urethane belts is generally able to penetrate the treated rope and almost completely fill the remaining interstices. This is believed to provide excellent physical or mechanical adhesion, as well as chemical adhesion. Depending on the treatment conditions, the treated wire may not be as circular in cross-section as the raw rope due to drying and polymerization or curing of the treated rope in a coil. Thus, the rope of the invention can have flattened surfaces formed on previous layers of rope due to winding in a coil.
[0078] The modalities of the invention exhibit several advantages over previous ones. The invention eliminates fraying during cutting and provides improvements in resistance to breakage of the belt, resistance to flexion of the belt, and resistance to damage by handling.
[0079] Generally, other physical properties of the belt, related to the performance of the belt, have not been negatively impacted by the invention. For example, in the case of cast PU belts, the resistance to flex fatigue and the load capacity and service life of the belts of the invention are as good or slightly better than those of belts made from raw rope. Similar advantages should be realized in other applications of reinforced elastomer such as those listed and / or illustrated previously in this.
[0080] Although the present invention and its advantages have been described in detail, it should be understood that various modifications, substitutions, and changes can be made to this without departing from the scope of the invention as defined by the claims
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30/30 attached. In addition, the scope of the present patent application is not intended to be limited to the particular modalities of the process, machine, manufacture, material composition, means, methods, and steps described in the specification. As someone skilled in the art will readily appreciate, from the disclosure of the present invention, processes, machines, manufacturing, material compositions, means, methods, or steps, currently existing or still being developed that perform substantially the same function or achieve substantially the same It follows that the corresponding modalities described herein can be used in accordance with the present invention. Likewise, the appended claims are intended to include within its scope such processes, machines, manufacturing, material compositions, means, methods, or stages. The invention disclosed in this can suitably be practiced in the absence of any element that is not specifically disclosed in this.

权利要求:
Claims (25)
[1]
1. Power transmission belt (10, 26, 32), FEATURED by the fact that it comprises: an elastomeric body (12), and a traction rope (22) embedded in the elastomeric body;
with the traction rope (22) impregnated with a polyurea-urethane composition different from said elastomeric body (12), said traction rope (22) comprising the polyurea reaction product of:
a polyurethane prepolymer; and a dressing selected from the group consisting of diamines and water.
[2]
2. Belt (10, 26, 32), according to claim 1, CHARACTERIZED by the fact that said prepolymer comprises the reaction product of a diisocyanate and one or more polyols selected from the group consisting of polyester polyols, polyols polycarbonate and polyether polyols; and where said dressing is water.
[3]
3. Belt (10, 26, 32), according to claim 2, CHARACTERIZED by the fact that said diisocyanate is selected from the group consisting of paraphenylene diisocyanate, toluene diisocyanate, and 4,4'-methylene diphenyl diisocyanate .
[4]
4. Belt according to claim 2 or 3, CHARACTERIZED by the fact that said one or more polyols is selected from the group consisting of polycarbonate polyols and polycaprolactone polyols.
[5]
5. Belt (10, 26, 32) according to claim 2, 3 or 4, CHARACTERIZED by the fact that said one or more polyols comprises a mixture of a diol and a triol.
[6]
6. Belt (10, 26, 32) according to any one of claims 1 to 5, CHARACTERIZED by the fact that said traction rope (22) comprises a filament yarn with interstices between fibers and said composition impregnates through the at least a part of said interstices and covers said fibers.
[7]
7. Belt (10, 26, 32), according to claim 6, CHARACTERIZED by the fact that said impregnated part is from 20% to 100% of the volume of the interstices.
[8]
8. Belt (10, 26, 32) according to any one of claims 1 to 5, CHARACTERIZED by the fact that said traction rope (22) comprises a thread comprising several carbon fibers with interstices between said fibers carbon, and wherein said composition impregnates 20% to 100% of the volume of said interstices and covers said carbon fibers.
[9]
9. Belt (10, 26, 32) according to claim 1, CHARACTERIZED by the fact that said prepolymer comprises the reaction product of para-phenylene diisocyanate and one or more polycaprolactone polyols; and wherein said dressing comprises water.
[10]
10. Belt (10, 26, 32) according to any one of claims 1 to 9,
Petition 870190115934, of 11/11/2019, p. 10/15
2/4
CHARACTERIZED by the fact that the said composition consists essentially of the reaction polyurea product of:
a polyurethane prepolymer; and water.
[11]
11. Belt (10, 26, 32) according to any one of claims 1 to 10, CHARACTERIZED by the fact that said elastomeric body (12) comprises fused polyurethane elastomer, and said elastomer is intimately in contact with said composition.
[12]
12. Belt (10, 26, 32), according to claim 11, CHARACTERIZED by the fact that said traction rope (22) comprises a thread comprising several carbon fibers with interstices between said carbon fibers, and wherein said composition impregnates 20% to 99% of the volume of said interstices and covers said carbon fibers; and wherein said elastomer impregnates at least a part of the remainder of said interstices.
[13]
13. Belt (10, 26, 32) according to any one of claims 1 to 12, CHARACTERIZED by the fact that said elastomeric body (12) comprises vulcanized rubber.
[14]
14. Belt (10, 26, 32) according to claim 13, CHARACTERIZED by the fact that said traction rope (22) comprises an adhesive coating layer disposed between said adhesive composition and said vulcanized rubber.
[15]
15. Belt (10, 26, 32) according to any one of claims 1 to 14, CHARACTERIZED by the fact that said elastomeric body (12) comprises a thermoplastic elastomer and said elastomer is intimately in contact with an adhesive composition .
[16]
16. Belt (10, 26, 32), according to claim 15, CHARACTERIZED by the fact that said elastomer is a thermoplastic polyurethane.
[17]
17. Belt (10, 26, 32) according to any one of claims 1 to 16, characterized by the fact that said belt (10, 26, 32) has a first end and a second end.
[18]
18. Belt (10, 26, 32) according to any one of claims 1 to 16, CHARACTERIZED by the fact that said belt (10, 26, 32) is an endless force transmission belt.
[19]
19. Belt (10, 26, 32), according to claim 18, CHARACTERIZED by the fact that said belt (10, 26, 32) is a toothed belt.
[20]
20. Belt (10, 26, 32), according to claim 1, CHARACTERIZED by the fact that the dressing is diamine, and the polyurethane prepolymer has terminal isocyanate groups that are blocked with a blocking agent.
Petition 870190115934, of 11/11/2019, p. 11/15
3/4
[21]
21. Traction rope (22) for the reinforcement of an elastomeric article, CHARACTERIZED by the fact that it is with at least a part of said rope impregnated with a polyurea-urethane composition different from the said elastomeric article, comprising the reaction product of:
a polyurethane prepolymer comprising the reaction product of a polyisocyanate and at least one polyol selected from polyester polyols, polycarbonate polyols, and polyether polyols; and a chain extender selected from diamines and water.
[22]
22. Traction rope (22) according to claim 21, CHARACTERIZED by the fact that said polyol is selected from the group consisting of polycarbonate polyols and polycaprolactone polyols and includes a mixture of a diol and a triol; said polyisocyanate is selected from the group consisting of para-phenylene diisocyanate,
2,6-toluene diisocyanate, and 4,4'-diphenyl methane diisocyanate; and said chain extender is water.
[23]
23. Traction rope (22) according to claim 21 or 22, CHARACTERIZED by the fact that said traction rope (22) comprises a filament yarn comprising several carbon fibers with interstices between said carbon fibers, and wherein said composition impregnates 20% to 99% of the volume of said interstices and covers said carbon fibers.
[24]
24. Method, CHARACTERIZED by the fact that it comprises:
mixing an immersion comprising a polyurethane prepolymer in an inert solvent;
immerse a filament yarn in said immersion;
drying said dipped filament yarn to remove said solvent; and at least partially curing said prepolymer in the presence of water;
wherein a tension cord (22) is provided comprising said filament yarn, at least partially impregnated with a polyurea-urethane composition; said method further comprising embedding said traction rope (22) in an elastomeric body (12), wherein the traction rope (22) is at least partially impregnated with a polyurea-urethane composition different from said elastomeric body (12 ).
[25]
25. Adhesive composition to impregnate a bundle of fiber for use in reinforcing a flexible elastomeric article, CHARACTERIZED by the fact that it comprises the reaction product of:
a polyurethane prepolymer; and water;
the polyurethane prepolymer comprising the reaction product of para-phenylene diisocyanate and a polycaprolactone polyol;
Petition 870190115934, of 11/11/2019, p. 12/15
4/4 wherein the adhesive composition is different from the elastomer composition of the elastomeric article.

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引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

---

US2968575A|1953-06-30|1961-01-17|Du Pont|Stable polyurethane latex and process of making same|

---

BE642434A|1958-06-04|

---

US3228820A|1962-05-14|1966-01-11|Richard D Samson|Nonfoaming process for bonding foam to porous substrates|

---

US3256220A|1964-11-25|1966-06-14|Union Carbide Corp|Products resulting from the reaction of carbonate diisocyanates with active hydrogencompounds|

---

US3349634A|1965-04-13|1967-10-31|Dayco Corp|Transmission belt and method of manufacture|

---

US3803281A|1968-04-22|1974-04-09|Goodyear Tire & Rubber|Method of preparing polyurethane belts|

---

US3602364A|1969-07-22|1971-08-31|Stevens & Co Inc J P|Segmented belt|

---

DE2060599A1|1970-12-09|1972-06-29|Bayer Ag|Process for the production of coating compositions based on polyurethane|

---

US4048001A|1973-01-10|1977-09-13|American Cyanamid Company|Polyurethane textile adhesive|

---

US3964328A|1973-09-07|1976-06-22|The Gates Rubber Company|Elastomer-free fabric surface for power transmission belt tooth facing|

---

US3962511A|1974-11-21|1976-06-08|The Goodyear Tire & Rubber Company|Textile composite structure and method of preparation|

---

US4009307A|1975-07-24|1977-02-22|Ppg Industries, Inc.|Polyurea-urethane coatings|

---

US4044540A|1976-03-04|1977-08-30|Toray Industries, Inc.|Elastomer coated carbon filament reinforcing yarn or cord, method and article|

---

DE2612783C3|1976-03-25|1981-11-05|Hoechst Ag, 6000 Frankfurt|Biurets, processes for their manufacture and their use|

---

US4194940A|1976-11-03|1980-03-25|Lord Corporation|Method of bonding employing an adhesive composition containing polyisocyanate reaction products having an available isocyanate content of not more than 0.5 percent|

---

DE2707659A1|1977-02-23|1978-08-24|Bayer Ag|SELF-NETWORKABLE POLYURETHANES|

---

DE3206550C1|1982-02-24|1983-05-05|Franz Kuhlmann Präzisionsmechanik und Maschinenbau GmbH & Co KG, 2940 Wilhelmshaven|Drawing head for drawing machines|

---

US4501852A|1983-06-20|1985-02-26|Mobay Chemical Corporation|Stable, aqueous dispersions of polyurethane-ureas|

---

JPH0466948B2|1984-02-17|1992-10-26|Dai Ichi Kogyo Seiyaku Co Ltd|

---

JPH0791766B2|1984-12-28|1995-10-04|日本発条株式会社|Cushion body and manufacturing method thereof|

---

US4701480A|1985-09-23|1987-10-20|Mobay Corporation|Stable, aqueous dispersions of polyurethane-ureas|

---

US4978409A|1988-07-06|1990-12-18|Bando Chemical Industries, Ltd.|Method of bonding fibers to hydrogenated nitrile rubber|

---

JPH02175943A|1988-12-26|1990-07-09|Toho Rayon Co Ltd|Carbon fiber cord|

---

JPH02210071A|1989-02-10|1990-08-21|Teijin Ltd|Fiber structure|

---

JPH03185139A|1989-09-14|1991-08-13|Toho Rayon Co Ltd|Carbon yarn cord and production thereof|

---

WO1991005088A1|1989-10-03|1991-04-18|Kanebo, Ltd.|Composite elastic yarn and process for preparing the same|

---

US5059672A|1990-06-25|1991-10-22|Thare Coat, Inc.|Elastomeric reaction products of aromatic isocyanate, aliphatic isocyanate and aromatic diamine components|

---

US5231159A|1990-12-27|1993-07-27|The Gates Rubber Company|High temperature resistant molded elastomer|

---

US5183877A|1991-10-25|1993-02-02|H. B. Fuller Company|Polyurea or polyurea-urethane adhesive for bonding elastomers|

---

JP2520343B2|1992-04-06|1996-07-31|バンドー化学株式会社|Transmission belt|

---

DE69310927T2|1992-12-07|1997-10-09|Uniroyal Chem Co Inc|USED WITH 4,4'-METHYLENE-BIS HARDENED POLYURETHANE|

---

AU6367094A|1993-04-09|1994-11-08|W.R. Grace & Co.-Conn.|Water-based coating process for isocyanate-based polyurea-urethane polymers|

---

CA2117875A1|1993-10-25|1995-04-26|James C. Novack|Vibration compacted fabrics for orthopedic casting tape|

---

JPH07178841A|1993-12-21|1995-07-18|Bridgestone Corp|Urethane composition for transmission belt|

---

JPH07186296A|1993-12-27|1995-07-25|Bridgestone Corp|Urethane composition for transmission belt|

---

JP2821369B2|1994-06-22|1998-11-05|バンドー化学株式会社|Toothed belt and method of manufacturing the same|

---

CA2194992C|1994-07-14|2002-11-26|William W. L. Wu|High temperature polyurethane/urea elastomers|

---

US5610217A|1994-10-31|1997-03-11|The Gates Corporation|Ethylene-alpha-olefin belting|

---

US5703193A|1996-06-03|1997-12-30|Uniroyal Chemical Company, Inc.|Removal of unreacted diisocyanate monomer from polyurethane prepolymers|

---

JPH102379A|1996-06-13|1998-01-06|Bando Chem Ind Ltd|Toothed belt|

---

US5807194A|1996-10-31|1998-09-15|The Gates Corporation|Toothed belt|

---

CA2243026C|1997-07-14|2007-01-16|Mitsuboshi Belting Ltd.|Processed fiber which is bondable to a rubber composition and a power transmission belt incorporating the processed fiber|

---

US6465104B1|1997-12-01|2002-10-15|Henkel Kommanditgesellschaft Auf Aktien|Modified polyurethane hotmelt adhesive|

---

EP1036103B2|1997-12-01|2008-07-16|Henkel AG & Co. KGaA|Modified polyurethane hotmelt adhesive|

---

US6598634B1|1998-04-08|2003-07-29|Bridgestone Corporation|Cured tire including encapsulated high modulus composite|

---

US6012498A|1998-04-08|2000-01-11|Bridgestone Corporation|Tires having belts of high modulus composites|

---

KR100349041B1|1999-03-30|2002-08-21|가부시키가이샤 구라레|Process for producing a leather-like sheet|

---

US6174984B1|1999-06-14|2001-01-16|Uniroyal Chemical Company, Inc.|Clear, resilient polyurethane elastomers|

---

JP3810320B2|1999-11-30|2006-08-16|ケムチュアコーポレイション|High performance polyurethane elastomers from MDI prepolymers with reduced free MDI monomer content|

---

US6649727B1|2000-07-27|2003-11-18|3M Innovative Properties Company|Aqueous colloidal dispersions of sulfonated polyurethane ureas and products|

---

KR100464503B1|2000-08-18|2005-01-03|더 게이츠 코포레이션|Power transmission belt having high modulus adhesive rubber member|

---

JP2002071057A|2000-08-25|2002-03-08|Toray Ind Inc|Cord for reinforcing rubber and fiber reinforced rubber material|

---

JP2002147535A|2000-11-10|2002-05-22|Akihiro Yokono|Stress relief preventing rubber belt|

---

JP2002195349A|2000-12-26|2002-07-10|Mitsuboshi Belting Ltd|Driving belt|

---

DE60227482D1|2001-01-12|2008-08-21|Gates Corp|DRIVE BELT WITH LOW STRETCH|

---

US6945891B2|2001-01-12|2005-09-20|The Gates Corporation|Power transmission belt and method|

---

JP2003221787A|2001-11-26|2003-08-08|Toray Ind Inc|Polyester cord for reinforcing power transmission belt and method for producing the same|

---

JP4565537B2|2002-04-18|2010-10-20|東洋紡績株式会社|Method for producing polyester fiber cord for rubber reinforcement|

---

JP3764413B2|2002-09-27|2006-04-05|三ツ星ベルト株式会社|Transmission belt manufacturing method|

---

EP1500740A4|2002-10-31|2005-12-07|Toho Tenax Co Ltd|Carbon fiber strand|

---

JP2005023480A|2003-07-03|2005-01-27|Toho Tenax Co Ltd|Carbon fiber cord for rubber reinforcement and fiber-reinforced rubber material|

---

RU2253773C1|2003-10-28|2005-06-10|Сапаров Владимир Николаевич|Drive belt|

---

US7342068B2|2003-11-18|2008-03-11|Air Products And Chemicals, Inc.|Aqueous polyurethane dispersion and method for making and using same|

---

JP4402556B2|2004-09-24|2010-01-20|東邦テナックス株式会社|Manufacturing method of carbon fiber cord for rubber reinforcement, and carbon fiber cord for rubber reinforcement|

---

US7254934B2|2005-03-24|2007-08-14|The Gates Corporation|Endless belt with improved load carrying cord|

---

WO2007025690A1|2005-09-01|2007-03-08|Sartomer Technology Co., Inc.|High modulus rubber composition|

---

JP2007154382A|2005-12-08|2007-06-21|Toray Ind Inc|Carbon fiber cord for reinforcement of transmission belt, process for producing the same and transmission belt using the same|

---

US8357065B2|2006-06-01|2013-01-22|The Gates Corporation|Power transmission belt and a process for its manufacture|

---

JP4943238B2|2006-06-08|2012-05-30|日本板硝子株式会社|Reinforcing cord and polyurethane belt using the same|

---

RU2331001C2|2006-08-11|2008-08-10|Роман Эдуардович Попков|Driving belt|

---

US20080064844A1|2006-09-13|2008-03-13|Nagaraj Phaniraj T|Isocyanate terminated polycaprolactone polyurethane prepolymers|

---

JP2009024779A|2007-07-19|2009-02-05|Bando Chem Ind Ltd|Driving belt|

---

US8771725B2|2007-10-12|2014-07-08|Chesson Laboratory Associates, Inc.|Poly compositions useful as topical medicaments and methods of using the same|

---

US7824284B2|2007-11-29|2010-11-02|The Gates Corporation|Power transmission belt and cord adhesive system and adhesion method|

---

US20090159206A1|2007-12-20|2009-06-25|National Starch And Chemical Investment Holding Corporation|Moisture curable hot melt adhesive|

---

US7824288B2|2008-03-08|2010-11-02|The Gates Corporation|Polyurethane power transmission belt|CN104389948B|2009-09-24|2018-03-30|盖茨公司|Cvt belt|

---

JP6783946B2|2016-10-11|2020-11-11|ゲイツ コーポレイション|Urethane adhesive treatment of core wire for power transmission belt|

---

DE102011114919A1|2011-10-06|2013-04-11|Arntz Beteiligungs Gmbh & Co. Kg|Belts with embedded tension members|

---

DE102011054978A1|2011-11-02|2013-05-02|Contitech Antriebssysteme Gmbh|Belt with a tension member, in particular a carbon tensile member prepared with a cross-linked polyurethane, and a preparation method|

---

DE102011054976A1|2011-11-02|2013-05-02|Contitech Antriebssysteme Gmbh|Process for the preparation of a tension member, in particular a carbon tension member, in the manufacture of a belt|

---

US9347520B2|2011-12-01|2016-05-24|Gates Corporation|Flat belt clamping system and method|

---

DE102011121643A1|2011-12-20|2013-06-20|Arntz Beteiligungs Gmbh & Co. Kg|Belt with textile overlay|

---

CN104520394B|2012-06-15|2016-10-26|3M创新有限公司|Curable forms the compositions of polyureas, preparation method and composite article|

---

DE102012105510A1|2012-06-25|2014-02-20|Contitech Antriebssysteme Gmbh|Articles, in particular drive belts, with a textile support|

---

WO2014011187A1|2012-07-13|2014-01-16|Otis Elevator Company|Belt including fibers|

---

CA2880573C|2012-08-15|2017-05-02|Gates Corporation|Power transmission belt|

---

US9011975B2|2012-11-09|2015-04-21|E I Du Pont De Nemours And Company|Treatment of filaments or yarn|

---

CN103012723B|2012-12-29|2014-12-10|山东一诺威聚氨酯股份有限公司|Preparation method of polyurethane elastomer composition for industrial synchronous belt|

---

DE102013104764A1|2013-05-08|2014-11-13|Contitech Antriebssysteme Gmbh|Method for producing a PU belt with tension members|

---

DE102013104757A1|2013-05-08|2014-11-13|Contitech Antriebssysteme Gmbh|Method for producing a belt with prepared tension members with a cover layer|

---

JP5802877B2|2013-10-18|2015-11-04|国立大学法人岐阜大学|Mixed yarn and its manufacturing method, braid, woven fabric, knitted fabric and non-woven fabric|

---

JP6013434B2|2013-11-29|2016-10-25|三ツ星ベルト株式会社|Friction transmission belt and manufacturing method thereof|

---

CN104559134B|2014-12-31|2017-05-10|艾艾精密工业输送系统（上海）股份有限公司|Solvent-resistant coating material for thermoplastic polyurethane conveying belt, and preparation and application of solvent-resistant coating material|

---

CN104692225B|2015-01-26|2017-05-31|依合斯电梯扶手（上海）有限公司|A kind of V-type TPU handrails and preparation method thereof|

---

CN113975560A|2015-03-31|2022-01-28|费雪派克医疗保健有限公司|User interface and system for supplying gas to an airway|

---

JP6807163B2|2015-04-28|2021-01-06|三ツ星ベルト株式会社|Belt and its manufacturing method|

---

KR20180011790A|2015-05-26|2018-02-02|반도 카가쿠 가부시키가이샤|Urethane composition, polyurethane elastic body, and electric belt|

---

CN105131248A|2015-09-08|2015-12-09|沈阳化工大学|High-temperature-resistant robot crawler and preparation method thereof|

---

CN108778665A|2016-03-07|2018-11-09|沃尔特·弗兰德有限公司|Method for producing drive belt and drive belt|

---

US20170299017A1|2016-04-19|2017-10-19|Contitech Antriebssysteme Gmbh|Cross linked elastomeric facing on cast polyurethane synchronous drive belts|

---

US10220545B2|2016-04-30|2019-03-05|Contitech Antriebssysteme Gmbh|Water based urethane as predip for carbon fiber cord|

---

JP6553674B2|2016-05-25|2019-07-31|三ツ星ベルト株式会社|Toothed belt and method of manufacturing the same|

---

DE102016209633A1|2016-06-02|2017-12-07|Contitech Antriebssysteme Gmbh|V-belt and method for its manufacture|

---

WO2018102387A1|2016-11-29|2018-06-07|Lanxess Solutions Us Inc.|Blocked isocyanate terminated prepolymers with improved processing properties|

---

JP6883824B2|2017-04-06|2021-06-09|株式会社高尾|Pachinko machine|

---

AU2018202597A1|2017-04-20|2018-11-08|Otis Elevator Company|Tension member for elevator system belt|

---

WO2019009339A1|2017-07-04|2019-01-10|三ツ星ベルト株式会社|V-ribbed belt|

---

CN108312584B|2018-02-28|2020-09-08|广州创耐工业皮带有限公司|Production method of casting type conveying belt|

---

JP6531245B1|2018-04-03|2019-06-19|株式会社ハリガイ工業|Composite material combining carbon fiber woven fabric and elastic polymer compound and method for producing the same|

---

US10981614B2|2018-09-20|2021-04-20|AB Inventions, LLC|Seat with downwardly-slanted bump-less nose|

---

WO2020079917A1|2018-10-17|2020-04-23|バンドー化学株式会社|Toothed belt|

---

DE102019200801A1|2019-01-23|2020-07-23|Contitech Antriebssysteme Gmbh|Process for manufacturing a drive belt|

---

DE102020103294A1|2020-02-10|2021-08-12|Arntz Beteiligungs Gmbh & Co. Kg|Drive means for conveyor belts, in particular agricultural machines and processes for the production thereof|

---

DE102020109429A1|2020-04-03|2021-10-07|Arntz Beteiligungs Gmbh & Co. Kg|Drive belts, especially toothed belts, with improved properties and methods of manufacturing them|

---

CN111335039A|2020-04-21|2020-06-26|济南天齐特种平带有限公司|Application of aliphatic polyurethane dispersion liquid|

法律状态:
2018-04-10| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

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2019-02-12| B06T| Formal requirements before examination [chapter 6.20 patent gazette]|

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2019-08-13| B15K| Others concerning applications: alteration of classification|Free format text: AS CLASSIFICACOES ANTERIORES ERAM: D06M 15/564 , D06M 15/568 , D06M 15/572 , F16G 1/28 , F16G 5/20 , C08J 5/04 , C09J 175/00 , C08G 18/10 , C08G 18/12 , C08G 18/30 , C08G 18/32 , C09J 175/02 Ipc: C08J 5/04 (1974.07), C08G 18/10 (1974.07), C08G 18 |

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2019-08-13| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|

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2020-02-18| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

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2020-03-24| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 24/11/2010, OBSERVADAS AS CONDICOES LEGAIS. |

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2020-04-22| B25G| Requested change of headquarter approved|Owner name: THE GATES CORPORATION (US) |

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2020-05-19| B25D| Requested change of name of applicant approved|Owner name: GATES CORPORATION (US) |

优先权:

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申请号 | 申请日 | 专利标题

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US12/628,676|2009-12-01|

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US12/628,676|US9944763B2|2009-12-01|2009-12-01|Polyurea-urethane cord treatment for power transmission belt and belt|

---

PCT/US2010/057943|WO2011068729A1|2009-12-01|2010-11-24|Polyurea-urethane cord treatment for power transmission belt and belt|

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