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    • 专利摘要:
    The present invention relates to the use of a composition of a joint mortar comprising at least one silylated polymer comprising at least one alkoxysilane group, at least one catalyst and at least one filler for producing tile joints or joints between LVT blades ("Luxurious Vinyl Tile" in English or "high-end vinyl blades" in French).
    公开号:FR3035662A1
    申请号:FR1553832
    申请日:2015-04-28
    公开日:2016-11-04
    发明作者:Jeremy Becquet；Liam Devlin；Quentin Guerineau
    申请人:Bostik SA；
    IPC主号:
    专利说明:

    [0001] TECHNICAL FIELD OF THE INVENTION The present invention relates to the use of a composition as a grouting mortar, also called joint mortar or mortar-jointing comprising at least one silylated polymer having at least one alkoxysilane group, at least one catalyst and at least one filler for making joints on a surface coating, particularly tile tile joints or joints between LVT blades ("Luxurious Vinyl Tile "in English or" high-end vinyl blades "in French). BACKGROUND ART In the installation of tile tiles, such as ceramic tiles, or LVT boards, the tiles or boards being joined edge-to-edge with spaces between said tiles or said boards, it is necessary to fill the interstices between the adjacent tiles with a bonding material commonly referred to as a joint mortar.
    [0002] The sealant compositions currently used are either based on an aqueous dispersion, such as an acrylic dispersion, acrylic styrene or polyurethane dispersion, or based on epoxy or based on Portland or Aluminous cement. For proper use, joint mortars must have certain properties, such as ease of preparation of the product (ready-to-use or mixing composition), good workability, good stain resistance, good resistance to ultraviolet light ( UV), uniform color appearance, good chemical resistance and easy cleaning of tiles or planks after jointing. Maneuverability facilitates spreading of the joint mortar composition (also called "grout") between the edges of adjacent tiles or boards without creating gaps or voids. Handling is a very important point of the joint because it directly affects the ease of implementation of the compositions (or products) and those with great maneuverability are more profitable because they require less work to perform a grout work. In addition, an easier implementation of the product is claimed by users.
    [0003] The joint stain resistance property is also important because tiles, such as ceramic tiles, or boards are used both functionally and ornamentally. Thus, the permanent stains on the joints 3035662 2 affect the decorative appearance of the coating. Stain resistance (eg wine, ketchup, etc.) refers to the fact that the color of the joint is not affected for example by the presence of wine or ketchup on the eye. The ease of cleaning is another important property for the user. In effect, the joint mortar composition is applied after the ceramic tiles for example have been fixed on a support (floor or wall for example). During the grouting operation, a portion of the excess sealant composition adheres to the tiles or blades to form a surface film and this excess must be removed from the tile or blades without damaging the joints that come just 10 to be made. Cleaning is the most common complaint of tilers (users). However, as indicated above, the tile-based or LVT tile-based coatings are also used for decorative purposes, so it is essential to be able to remove the excess sealant composition present on the tiles or the slats.
    [0004] Chemical resistance is another important property because the seals are frequently exposed to cleaning or cleaning products such as bleach or acidic anti-scale products. The cement-based joints and ready-to-use joints currently used are not very resistant to chemicals. US 2013/0102713 discloses a sealant composition based on an aqueous acrylic dispersion. US 8,263,694 discloses a sealant composition based on an aqueous polyurethane dispersion. Such sealant mortar compositions do not exhibit excellent chemical resistance. In addition, when applying the joint mortar composition, there is a high risk of cracking during drying of the aqueous composition then requiring at least a second application of the joint mortar composition. It has further been found that aqueous dispersion sealants are not easy to clean. WO 2004/063246 discloses an epoxy resin joint mortar composition. Such compositions are two-component compositions wherein the resin is packaged on the one hand and the hardener is packaged on the other hand, mixing the two components being performed just prior to application of the sealant composition. The use of such a composition is therefore more restrictive than single-component sealant mortar compositions. In addition, the epoxy-based seals do not exhibit long-lasting coloration, especially because they are U.V. sensitive and therefore tend to yellow. In addition, the epoxy is classified as environmentally toxic and allergenic, because of the epoxy but also because of the isocyanates present. It has also been found that epoxy resin sealants are not easy to clean. Another type of sealant mortar compositions are cementitious compositions. Like epoxy-based compositions, cementitious compositions are two-component compositions where the cement is conditioned on the one hand and the water must be provided on the other hand because when applying the joint mortar composition, the cement must be premixed with water. In addition, the cement-based joints do not have excellent chemical resistance or excellent stain resistance. Indeed, their porous nature makes them absorb stains 10 as well as products that can be used to clean said joints. In addition, as with the aqueous dispersion seals, when applying the cementitious joint mortar composition, there is a high risk of cracking (also called "drying shrinkage" phenomenon) when drying the aqueous composition then requiring at least a second application of the sealant composition. In addition, the cement is classified as corrosive. The object of the present invention is to provide a sealant mortar composition for overcoming the above-described disadvantages of currently used sealant mortar compositions.
    [0005] SUMMARY OF THE INVENTION A first object of the present invention relates to the use of a composition comprising at least one silylated polymer comprising at least one alkoxysilane group, at least one catalyst and at least one filler as a grouting mortar.
    [0006] The present invention also provides the use of a composition comprising at least one silylated polymer having at least one alkoxysilane group, at least one catalyst and at least one filler for making surface coating joints. Preferably, the gasket is a tile joint or a joint between LVT blades. According to one embodiment, the silylated polymer comprising at least one alkoxysilane group is chosen from silylated polyethers comprising at least one alkoxysilane group and silylated polyurethanes containing at least one alkoxysilane group, alone or as a mixture.
    [0007] According to one embodiment, the silylated polymer comprising at least one alkoxysilane group is chosen from the polymers of formulas (II), (III), (IVa), (IVb) or (V) below: 3035662 (R50) 3_p (R4) pSi - R3 - NH - C - [OR2], O4 OC - NH - R1 - NH - C - [OR2] p O - C - NH - R3 - Si (R4) p (OR5) 3 - p m1 (R50) 3 - (R4) pSi - R3 - [OR2] n - O - R3 - Si (R4) p (OR5) 3 - (R4) p (OR5) r (OR5) 2 - t III 3 ER 50) 3.pSi - If O - R - NH - - [OR2], OC - NH - R1 - NH - - [OR2] '(R) s (R4 (OR5) 2 - t (C) R5) r (R4) ## STR2 ## (OR5) r (R4) p ER50) 3 - Si - O - Si (O - Si) - R3 - N - O - NH - R1 NH - O - N - Ft - 3 (Si - O) - Si E0 - Si ( OR5) 31 R1 (R4) t R6 R6 (R4) t (R4) n2 NH-C- [OR2] nOC-NH-R10 (IVb) 50) 4 1 3 p (R (R) p Si - R 3 - N - C - NH - R R - O - NH - C - [OR 2] n - O - C - NH - R 0 O (V) NH - C In the formulas (II), (III), (IVa), (IVb) and (V): ## STR5 ## a divalent hydrocarbon radical comprising from 5 to 15 carbon atoms which may be aromatic or aliphatic, linear, branched or cyclic, R 3 represents a linear or branched divalent alkylene radical comprising from 1 to 6 carbon atoms, R2 represents a divalent linear or branched alkylene radical comprising from 2 to 4 carbon atoms, - R4 and R5, identical or different, each represent a linear or branched alkyl radical comprising from 1 to 4 carbon atoms, - R6 represents a hydrogen atom , a phenyl radical or a linear, branched or cyclic alkyl radical comprising from 1 to 6 carbon atoms, n is an integer such that the average molar mass of the polyether block of formula -PRI is from 300 g / mole at 40000 g / mol, - ml is zero or an integer such that the average molar mass of the polymer ranges from 500 g / mol to 50000 g / mol, 5 - m is an integer other than zero such that the molar mass Medium lift e of the polymer is from 500 g / mol to 50000 g / mol, - p is an integer equal to 0, 1 or 2, - q, r and s are integers equal to 0, 1 or 3 such that the sum q + r + s is equal to 3, 10 - t is an integer equal to 0, 1 or 2, u is an integer ranging from 0 to 8. Preferably, the composition comprises at least one polymer of formula ( IVa).
    [0008] According to one embodiment, the filler is chosen from sand, calcium carbonate, glass beads, glass, quartz, barite, alumina, mica, talc and preferably from sand, calcium carbonate and glass beads. According to one embodiment, the composition comprises at least two different charges.
    [0009] Preferably, said at least two fillers are chosen from sand, calcium carbonate, glass beads, glass, quartz, barite, alumina, mica, talc and preferably from sand. calcium carbonate and glass beads. According to one embodiment, the sand is a colored sand.
    [0010] According to one embodiment of the invention, the composition comprises: from 8 to 30% by weight, preferably from 12 to 24% by weight, of at least one silylated polymer comprising at least one alkoxysilane group; 0.1 to 1% by weight, preferably 0.3 to 0.5% by weight, of at least one catalyst, 5 to 85% by weight, preferably 10 to 80% by weight, at least one filler, based on the total weight of the joint mortar composition.
    [0011] According to one embodiment of the invention, the composition further comprises at least one additive chosen from plasticizers, solvents, pigments, moisture absorbers, UV stabilizers, flakes, fluorescent materials or luminescent materials. According to one embodiment of the invention, the composition comprises: from 8% to 30% by weight, preferably from 12% to 24% by weight, of at least one silylated polymer comprising at least one alkoxysilane group; 0.1 to 1% by weight, preferably 0.3 to 0.5% by weight, of at least one catalyst, 5 to 85% by weight, preferably 10 to 80% by weight, at least one filler, from 0.1 to 20% by weight, preferably from 0.5 to 15% by weight, of at least one other additive chosen from plasticizers, solvents, in particular volatile solvents. , pigments, moisture absorbers, UV stabilizers, flakes, fluorescent materials or luminescent materials, based on the total weight of the joint mortar composition.
    [0012] Another object of the present invention is a surface coating comprising tiles or blades, characterized in that the joints between two tiles or two adjacent blades are made using a joint mortar composition as defined in the present invention.
    [0013] The invention also relates to a method of manufacturing a surface coating comprising tiles or blades separated from each other by at least one gap, said method comprising the steps of: a) applying a joint mortar composition as defined in the present invention in said gap, b) hardening of the joint mortar composition. The present invention makes it possible to provide a single-component sealant mortar composition, making it possible to dispense with an additional mixing step before application. It can be packaged in a form that makes it directly ready for use by a user. The sealant mortar composition according to the invention is not or only slightly toxic, in particular the components of the composition are not classified as corrosive, irritant or allergenic or classified as dangerous for the environment.
    [0014] The sealant mortar composition according to the invention comprises a silylated polymer binder which cures at atmospheric humidity to 100% solids. Thus, the drying removal phenomenon does not appear. As described above, this drying shrinkage phenomenon can occur when drying an aqueous binder composition, such as aqueous dispersant binders or cementitious binders which require mix with water before application. Due to the evaporation of the water during drying, cracks may appear in the seal, thus necessitating the renewal of the application. The seal obtained after application and drying of the sealant mortar composition according to the invention has a durable coloration over time, in particular thanks to an excellent resistance to UV. Moreover, the use of colored sand makes it possible to overcome use of pigment. It has been found that the use of pigment makes the epoxy mortar or aqueous dispersion compositions difficult to remove from the tiles or blades before drying, in the case where the composition is present on the tiles. tiling or LVT blades. The sealant mortar composition according to the invention has excellent chemical and stain resistance.
    [0015] In addition, the sealant mortar composition according to the invention is easy to remove from the tiles or blades after jointing said tiles or said blades (application of the joint mortar composition), in case the mortar composition is deposited on the tile or the blade. It is indeed very important to be able to remove this joint mortar composition from the decorative surface of the tiles or blades to obtain a better aesthetic appearance of the tiles or blades. DETAILED DESCRIPTION OF THE EMBODIMENTS OF THE INVENTION The present invention relates to the use of a composition comprising at least one silylated polymer comprising at least one alkoxysilane group, at least one catalyst and at least one filler as a grouting mortar (also designated by seal mortar or mortar joint). In particular, the present invention relates to the use of a composition of a grout composition comprising at least one silylated polymer comprising at least one alkoxysilane group, at least one catalyst and at least one load for making joints of a surface coating, especially tile joints or joints between LVT ("luxurious Vinyl Tile" blades in English or "high-end vinyl blade" in French).
    [0016] Silylated Polymer Within the meaning of the present invention, the term "silylated polymer" is understood to mean a polymer comprising at least one alkoxysilane group. Preferably, the silylated polymer comprising at least one alkoxysilane group is a polymer comprising at least one, preferably at least two, groups of formula (I): ## STR5 ## in which R 5 and R 5, which are identical or different, each represent a linear or branched alkyl radical comprising from 1 to 4 carbon atoms, with the possibility that when there are several radicals R 4 (or R 5), the latter are identical or different. ; p is an integer equal to 0, 1 or 2.
    [0017] The silylated polymer as defined above comprises at least one crosslinkable alkoxysilyl group. The crosslinkable alkoxysilyl group is preferably positioned at the end of said polymer. Positioning in the middle of the chain is not excluded, however. The polymer is generally in liquid form.
    [0018] The joint mortar composition is not crosslinked prior to application between the surface coating slabs. The joint mortar composition is applied under conditions permitting its crosslinking. The crosslinking of the sealant composition has the effect of creating, between the polymer chains of the silylated polymer described above and under the action of atmospheric moisture, siloxane-type bonds which lead to the formation of a three-dimensional polymeric network. According to one embodiment, the silylated polymer comprises at least two groups of formula (I), preferably at least three groups of formula (I), more preferably at least four groups of formula (I).
    [0019] Preferably, the silylated polymers are selected from silylated polyurethanes, silylated polyethers, and mixtures thereof. Preferably, the silylated polymer or polymers have an average molar mass ranging from 500 to 50000 g / mol, more preferably ranging from 700 to 20000 g / mol. The molar mass of the polymers can be measured by methods well known to those skilled in the art, for example by steric exclusion chromatography using polyethylene glycol type standards. According to one embodiment, the silylated polymer corresponds to one of the formulas (II), (III), (IVa), (IVb) or (V): (R50) 3_p (R4) pSi-R3 - NH - C - [OR 2], OC - NH - R 1 - NH - C - [OR 2], O - C - NH - R 3 - Si (R 4) p (OR 5) 3 - O (R 50) 3 - ( R4) pSi - 0 0 mi (II) Si (R4) p (OR5) 3 - p R3 - [OR2] n - O - R3 - 10 (III) (R4) p (OR5) r (OR5) 2-t (OR5 2-t (OR5) r (R4) p [R50] 3.pSi-O-R3-NH-C- [OR2], O-C-NH-R1-NH-C- [OR2] 'O-C - NH - R3 (Si - O) - If LO - Si (OR5) 31 ci 0 0 L The h (R4) s (R) t OO (Ri) t (R4) s m1 (IVa) (R4) p (OR5) r (OR5) 24 (OR5) 2-MDR)) r (R4) p ER50) 3-Si-O-Si {0 -u R3-N-C NH-R1 NH-C- [OR2] nOC- NH - R 1 NH - C - N - R - 1 (Si - O) - If LO - Si (OR 5) 31 a I II a (R -) s (R 4) t R 6 O 0 O O R 6 (R 4) t (R 4) s (IVb) 541 1 3 4 5 (ROh 3 P (p) -R 3 -NH-NH-R 2] n NH-C-N-R-Si (R) p (OR) 3 -p NH-C In the formulas (II), (III), (IVa), (IVb) and (V): ## STR1 ## in which R represents a radical; divalent hydrocarbon comprising 5 at 15 carbon atoms which may be aromatic or aliphatic, linear, branched or cyclic, - R3 represents a linear or branched divalent alkylene radical comprising from 1 to 6 carbon atoms, - R2 represents a linear or branched divalent alkylene radical comprising from 2 to 4 carbon atoms, R 3 and R 5, which may be identical or different, each represent a linear or branched alkyl radical comprising from 1 to 4 carbon atoms; R 6 represents a hydrogen atom, a phenyl radical or a radical; linear, branched or cyclic alkyl comprising from 1 to 6 carbon atoms, 5 - n is an integer such that the average molar mass of the polyether block of formula -PRI is from 300 g / mol to 40000 g / mol, ml is zero or an integer such that the average molar mass of the polymer ranges from 500 g / mol to 50000 g / mol; m is an integer other than zero such that the average molar mass of the polymer is 500 g / mol; mole at 50000 g / mole, - p is an integer equal to 0, 1 or 2, - q, r and s are integers equal to 0, 1 or 3 such that the sum q + r + s is equal to 3, - t is an integer equal to 0, 1 or 2, 15 - u is an integer ranging from 0 to 8. Preferably, R 1 is chosen from one of the following divalent radicals whose formulas below show the 2 free valences: ) the divalent radical derived from isophorone: b) c) OR 30 d) CH2 or 35 e) - (CH2) 6- (or hexamethylene radical).
    [0020] The polymers of formula (II) can be obtained according to a process described in documents EP 2336208 and WO 2009/106699. Among the polymers corresponding to formula (II), mention may be made of: GENIOSIL® STP-E10 (available from Wacker): polyether comprising two dimethoxy-type groups (I) (mi equal to 0, p equal to 1 and R4 and R5 represent a methyl group) having a number average molecular weight of 8889 g / mol where R3 represents a methyl group; GENIOSIL® STP-E30 (available from Wacker): polyether comprising two dimethoxy groups (I) (mi equal to 0, p equal to 1 and R4 and R5 represent a methyl group) having a number-average molar mass 14493 g / mol where R3 represents a methyl group; SPUR + e 1050MM (available from Momentive): polyurethane comprising two groups (I) of trimethoxy type (half different from 0, p equal to 0 and R5 represents a methyl group) having a number-average molecular weight of 16393 g wherein R3 is n-propyl; SPUR + e Y-19116 (available from Momentive): polyurethane comprising two groups (I) of trimethoxy type (half different from 0 and R5 represents a methyl group) having a number-average molar mass ranging from 15,000 to 17,000 g mol / mol where R3 represents an n-propyl group; DESMOSEAL® XP 2636 (available from Bayer): polyurethane comprising two groups (I) of trimethoxy type (ml different from 0, p equal to 0 and R5 represents a methyl group) having a number average molar mass of 15038. g / mol where R3 represents an n-propyl group.
    [0021] The polymers of formula (III) can be obtained by hydrosilylation of polyether diallyl ether according to a method described for example in document EP 1829928. Among the polymers corresponding to formula (III), mention may be made of the MS® 303H polymer (available from Kaneka) corresponding to a polyether comprising two groups (I) of dimethoxy type (p equal to 1 and R4 represents a methyl group) having a number-average molar mass of 12030 g / mol.
    [0022] The polymers of formula (IVa) can be obtained according to a process as described in documents EP 2336208 and WO 2009/106699 (as for obtaining the polymer of formula (II)) by substituting mole for mole in the second Step 5 ## STR2 ## The polymers of formula (IVb) can be obtained according to a process similar to that of the polymer (V) described in the experimental part. substituting mole for mole in the second step: (R: 4) p HN - R2 - Si (R4) p R5 by HN - R Si 'CR' (R.), Among the polymers corresponding to formula (IVa) mention may be made of the GENIOSIL® XB502 polymer (available from Wacker) corresponding to a mixture of two polymers, of which a polymer of formula (II) having a number-average molar mass of 14000 g / mol and a polymer of formula (IVa) of average molecular weight in number of 800 g / mol. The mass proportion between the polymer of formula (II) and the polymer of formula (IVa), (II) / (IVa) is 25/75 in the GENIOSIL® XB502 product. An example of a process for producing a silylated polymer of formula (V) is described in the experimental section. According to a preferred embodiment of the invention, the sealant composition comprises at least one silylated polymer of formula (IVa) or (IVb), preferably at least one polymer of formula (IVa).
    [0023] According to one embodiment, the mortar composition comprises at least two different silylated polymers chosen from a polymer of formula (II), a polymer of formula (III) a polymer of formula (IVa), a polymer of formula (IVb) and a polymer of formula (V). According to a preferred embodiment of the invention, the sealant composition comprises at least one silylated polymer of formula (II) and at least one silylated polymer of formula (IVa).
    [0024] The silylated polymer (s) preferably represent from 8 to 30% by weight, preferably from 12 to 24% by weight, of the total weight of the joint mortar composition. Catalyst 5 The catalyst used in the sealant composition according to the invention can be any catalyst known to those skilled in the art for silanol condensation. Examples of such catalysts are: aminosilanes such as N- (2-aminoethyl) -3-aminopropyltrimethoxysilane or 3-aminopropyltrimethoxysilane; organic titanium derivatives such as titanium acetylacetonate (commercially available under the US Pat. TYZOR® AA75 designation from DuPont), - aluminum such as aluminum chelate (commercially available under the name K-KAT® 5218 from King Industries), 15 - amines such as 1.8 -diazabicyclo [5.4.0] undec-7-ene (DBU) or 1,5-diazabicyclo [4.3.0] non-5-ene (DBN), - tin catalysts such as Neostann® S- 1 or Tib-Kat® 216 (available from Kaneka or Tib Chemicals, respectively). These tin catalysts are particularly suitable for the silylated polymers of formula (III). The catalyst (s) is preferably from 0.1 to 1% by weight, preferably from 0.3 to 0.5% by weight, of the total weight of the mortar composition.
    [0025] Charges Charges may increase the volume of the sealant composition. The fillers may also make it possible to modify the visual appearance of the joint obtained after hardening of the joint mortar composition.
    [0026] The filler used in the sealant composition according to the invention preferably has a particle size of from 1 to 400 μm, more preferably from 10 to 350 μm, more preferably from 50 to 300 μm. is an inorganic filler. According to one embodiment, the filler is selected from sand, calcium carbonate, glass beads, glass, quartz, barite, alumina, mica, talc. Preferably, the filler is selected from sand, calcium carbonate and glass beads.
    [0027] According to one embodiment, the mortar composition comprises at least two different fillers chosen from sand, calcium carbonate, glass beads, glass, quartz, barite, alumina, mica, talc, preferably selected from sand, calcium carbonate and glass beads.
    [0028] According to one embodiment, the sand is a colored sand. For the purposes of the present invention, a colored sand is a sand coated with a colored thermoset resin. For example, the sand may be coated with a polyaspartic or polyurethane or epoxy resin in which a pigment is dispersed. Such colored sands may contain from 1 to 10% by weight of pigment, typically from 2 to 3% by weight of pigment, based on the total weight of colored sand. Colored sands are commercially available from the Sibelco Company under the name Blansil® 24T for example. The colored sand makes it possible to improve the ease of cleaning the tiles or vinyl strips after grouting (application of the joint between two tiles or slabs), with respect to a composition comprising sand and pigments.
    [0029] The sand which can be used in the present invention preferably has a particle size of from 1 to 400 μm, more preferably from 10 to 350 μm, more preferably from 50 to 300 μm. Preferably, if calcium carbonate is used, it is rendered hydrophobic, for example with calcium stearate or an analogue to impart partial or total hydrophobicity to the calcium carbonate particles. The more or less hydrophobic character of the calcium carbonate will have an impact on the rheology of the composition. In addition, the hydrophobic coating prevents the calcium carbonate from absorbing the constituents of the joint mortar composition and rendering them ineffective. The hydrophobic coating of calcium carbonate may be from 0.1 to 3.5% by weight, based on the total weight of calcium carbonate. As an example of calcium carbonate, mention may be made of Mikhart® 1T (available from La Provençale). The calcium carbonate which can be used in the present invention preferably has a particle size of from 1 to 400 μm, more preferably from 10 to 350 μm, more preferably from 50 to 300 μm. The glass beads which can be used in the present invention preferably have a particle size ranging from 1 to 400 μm, more preferably from 10 to 350 μm, more preferably from 50 to 300 μm.
    [0030] The filler (s) is preferably from 5 to 85% by weight, preferably from 10 to 80% by weight, of the total weight of the joint mortar composition.
    [0031] In one embodiment, the composition comprises: - from 8 to 30% by weight, preferably from 12 to 24% by weight, of at least one silylated polymer, 5 - of 0.1 at 1% by weight, preferably from 0.3 to 0.5% by weight, of at least one catalyst, from 5 to 85% by weight, preferably from 10 to 80% by weight, of at least a filler, based on the total weight of the joint mortar composition.
    [0032] According to one embodiment of the invention, the composition further comprises at least one additive chosen from plasticizers, solvents, in particular volatile solvents, pigments, moisture absorbers (in English "moisture scavenger"). UV stabilizers, flakes, fluorescent materials or luminescent materials.
    [0033] The plasticizer may, for example, be chosen from the derivatives of benzoic acid, phthalic acid, trimellitic acid, pyromellitic acid, adipic acid, sebacic acid, fumaric acid and the acid. maleic acid, itaconic acid or citric acid or from derivatives of polyester, polyether, hydrocarbon mineral oil. Among the phthalic acid derivatives are phthalates, such as dibutyl phthalate, dioctyl phthalate, dicyclohexyl phthalate, diisooctyl phthalate, diisodecyl phthalate, dibenzyl phthalate or phthalate. butylbenzyl. Preferably, the plasticizer, if present, is chosen from phthalates, sebacates, adipates and benzoates. In particular, the plasticizer is compatible with the polymer and does not run down in the composition. The plasticizer makes it possible to increase the plasticity of the composition and to reduce its viscosity. When a plasticizer is present in the composition, its content is preferably less than or equal to 5% by weight, more preferably less than or equal to 3% by weight, expressed relative to the total weight of the composition. When present, the plasticizer may for example be from 0.1 to 5% by weight or from 0.5 to 3% by weight of the total weight of the composition. The solvent is preferably a volatile solvent at room temperature (temperature of the order of 23 ° C). The volatile solvent may for example be chosen from volatile alcohols at room temperature, such as ethanol or isopropanol. The volatile solvent makes it possible to reduce the viscosity of the composition and to make the sealant composition easier to apply. The volatile nature of the solvent 3035662 16 allows the seal, obtained after curing the composition, to no longer contain a solvent. Thus, the solvent does not have a negative influence on the hardness of the joint. When a solvent, in particular a volatile solvent, is present in the composition, its content is preferably less than or equal to 3% by weight, more preferably less than or equal to 2% by weight, expressed relative to the total weight. of the composition. When present, the solvent, in particular the volatile solvent, may for example represent from 0.5 to 3% by weight or from 1 to 2% by weight of the total weight of the composition. When a pigment is present in the composition, its content is preferably less than or equal to 3% by weight, more preferably less than or equal to 2% by weight, expressed relative to the total weight of the composition. When present, the pigment may for example represent from 0.1 to 3% by weight or from 0.5 to 2% by weight of the total weight of the composition. The pigments can be organic or inorganic pigments.
    [0034] The moisture absorber, if present, may be selected from vinyltrimethoxysilane (VTMO), vinyltriethoxysilane (VTEO), alkoxyarylsilanes, such as GENIOSIL® XL 70 available from Wacker. When a moisture absorber is present in the composition, its content is preferably less than or equal to 3% by weight, more preferably less than or equal to 2% by weight, expressed relative to the total weight of the composition. When present, the moisture absorber may for example represent from 0.5 to 3% by weight or from 1 to 2% by weight of the total weight of the composition.
    [0035] Preferably, the composition comprises: from 8 to 30% by weight, preferably from 12 to 24% by weight, of at least one silylated polymer, from 0.1 to 1% by weight, preferably from 0 to From 3 to 0.5% by weight, of at least one catalyst, from 5 to 85% by weight, preferably from 10 to 80% by weight, of at least one filler, from 0.1 to 20% by weight, preferably from 0.5 to 15% by weight, of at least one other additive chosen from plasticizers, solvents, in particular volatile solvents, pigments, moisture absorbers, stabilizers and the like. UV, flakes, fluorescent materials or luminescent materials, based on the total weight of the joint mortar composition.
    [0036] According to one embodiment, the composition consists essentially of: from 8 to 30% by weight, preferably from 12 to 24% by weight, of at least one silylated polymer, from 0.1 to 1% by weight; weight, preferably from 0.3 to 0.5% by weight, of at least one catalyst, from 5 to 85% by weight, preferably from 10 to 80% by weight, of at least one filler, from 0.1 to 20% by weight, preferably from 0.5 to 15% by weight, of at least one other additive chosen from plasticizers, solvents, in particular volatile solvents, pigments, absorbers of moisture, UV stabilizers, flakes, fluorescent materials or luminescent materials, based on the total weight of the joint mortar composition. According to one embodiment, prior to application to a surface coating, the sealant composition according to the invention is substantially anhydrous, preferably completely anhydrous. The sealant composition according to the invention is preferably in single-component form, that is to say that all the components are packaged in the same compartment.
    [0037] The sealant mortar composition is preferably ready for use, ie the user (an individual or a professional) can directly apply the mortar composition to make the joint, without having to perform a pre-mix. The sealant mortar compositions are preferably packaged in the absence of air, particularly in the absence of moisture from the air. For example, sealant compositions are stored under vacuum, for example in vacuum bags. Vacuum aluminum bags are particularly well suited for storing sealant compositions according to the invention. The sealant mortar composition according to the invention can also be packaged in an inert environment, for example under a nitrogen atmosphere. The sealant mortar composition according to the invention may be packaged in the form of an article containing said sealant mortar composition insulated from ambient moisture and ready for use. In particular, said sealant composition is preferably packaged in an anhydrous form in said article. According to one embodiment, the composition is contained in a hermetic package, in particular a pouch, wherein the mortar composition is packaged under an inert atmosphere or under vacuum.
    [0038] The sealant mortar compositions may be prepared by mixing the silylated polymer (s) and the charge (s) at a temperature of from 5 ° C to 80 ° C, preferably under an inert atmosphere. The catalyst (s) may be added at the same time as the silylated polymer (s) but said catalysts are preferably added in a second step, after mixing the polymers and fillers. The other additives are introduced into the joint mortar composition in accordance with the usual practice.
    [0039] The present invention provides the use of the above-described composition for making surface coating joints. The surface coating may be tiles (tile tiles) or slats or slabs. The tiles may be of various natures and surfaces, for example the surface may be smooth or non-slip. Among the tiles that can be used are ceramic tiles, but also tiles of marble, granite, limestone, cements or stone. Blades or slabs can be flexible or semi-flexible. Among the blades or slabs that can be used are LVT blades (vinyl blade) and cork-based blades. Among the LVT blades, there may be mentioned blades based on PVC (polyvinyl chloride). In particular, the PVC-based blades can be chosen from homogeneous PVC blades, multilayer PVC blades or cork PVC strips.
    [0040] The seal is for example obtained after application of the joint mortar composition in the gap between two tiles or blades and drying of the joint mortar composition. The gap between the tiles or the blades may for example have a width ranging from 1 mm to 30 mm.
    [0041] The blades or tiles may be of different shapes, for example in the form of polygons, such as squares, rectangles, lozenges, hexagons. For example, tiles or blades may have sides of a length ranging from a few centimeters to a few meters. Preferably, the tiles or slides are attached to the support (eg floor or wall), leaving a gap between two tiles or two blades. The tiles or the blades can be fixed on the support with the aid of an adhesive composition, conventionally used for this type of application. Among these adhesive compositions 3035662 19 for gluing the tiles or the blades on the support, mention may be made of cement-based adhesive mortars or ready-to-use tile adhesives based on polymers in aqueous phase. According to one embodiment, the surface coating is present on a support, which may be a floor or a wall. The support may for example be concrete, cellular concrete, old tiles or floors, wood, anhydrite screed or plasterboard. The sealant mortar composition may be applied by any method known to those skilled in the art, for example by means of a spatula, a rubber scraper or a foam scraper. Surface Coating The present invention also provides a surface coating comprising tiles or blades, characterized in that the joints between two adjacent tiles or blades are made using a joint mortar composition comprising at least one silylated polymer, at least one catalyst and at least one filler. According to one embodiment, the sealant composition used to make the surface coating is as defined in the present invention. According to one embodiment, the tiles and / or the blades are as defined in the present invention.
    [0042] According to one embodiment, the surface coating is present on a support, which may be a floor or a wall. The support may for example be concrete, cellular concrete, old tiles or floors, wood, anhydrite screed or plasterboard.
    [0043] Surface Coating Manufacturing Method The present invention also provides a method of manufacturing the surface coating comprising tiles or blades separated from each other by at least one gap. The manufacturing method comprises the steps of: a) applying the sealant composition according to the invention in at least one gap of said surface coating, b) curing the sealant composition.
    [0044] Step a) may be preceded by a step of laying the tiles or blades on a support. Said tiles or said blades may be optionally bonded to said support. This bonding can be performed using an adhesive composition conventionally used for this type of application.
    [0045] Prior to step b) of curing the composition, it is possible to provide a step of cleaning the tiles or blades to remove excess composition that could have been deposited on said tile or slats. Step b) of curing can for example be carried out thanks to the ambient humidity (or atmospheric humidity); in particular, a physical or mechanical step for curing (or drying) is not necessary. For example, ambient humidity can be characterized by a relative humidity of 50% at 23 ° C.
    [0046] EXAMPLES Example of a process for producing a silylated polymer of formula (V) as described above: Step (i): Synthesis of a polyurethane comprising 2 -NCO end groups and one or more polyether blocks: In a closed reactor of 250 ml, equipped with stirring, heating means, a thermometer and connected to a vacuum pump, is introduced 83.04 g of Desmophen® 4028 BD polyether polyol having a hydroxyl number of 28. mgKOH per g (corresponding to an equivalent number of -OH function equal to 0.499 mmol / g). The assembly is heated to 80 ° C and maintained at a reduced pressure of 20 mbar for 1 hour to dehydrate the polyether polyol. 0.5 mg of a bismuth / zinc carboxylate catalyst (Borchi® Kat VP0244 from Borchers GmbH) and 8.79 g are then introduced into the reactor maintained at atmospheric pressure and brought to a temperature of 90 ° C. isophorone diisocyanate IPDI (titrating 37.6% w / w in -NCO group), the amounts introduced thus corresponding to an NCO / OH ratio equal to 1.9. The polyaddition reaction is continued for 4 hours until 91.83 g of a polyurethane having a content of -NCO (followed by potentiometric titration with an amine) equal to 0.406 mmol / g is obtained, which corresponds to the complete consumption of the hydroxyl functions of the polyether polyol.
    [0047] Step (ii): Synthesis of a polyurethane terminated by urea functions each connected to an alkoxy silyl end group: The end of step (i) is charged to 8.23 g of gamma-amino npropyl-triethoxysilane (M = 221 g / mol), corresponding to an NCO / NH 2 ratio equal to 1. The reactor is then maintained under an inert atmosphere at 100 ° C. for 1 hour until complete reaction (detected by the disappearance of the strip). -NCO at analysis 5 Infra-red). 100.06 grams of a translucent product are obtained. Its melt viscosity measured by a Brookfield RTV viscometer (at 23 ° C. for a rotation speed of 20 rpm and a needle 7) is 85,000 mPa. s.
    [0048] Its number-average molecular weight is 22500 Da measured by steric exclusion chromatography (GPC) (for "Gel Permeation Chromatography"). Preparation of the mortar compositions The following products were used for the manufacture of the sealant compositions according to the invention: the following silylated polymers: Geniosil® XB502 (available from Wacker); - Geniosil® STPE10 (available from Wacker); Geniosil® STPE30 (available from Wacker); - MS® 303H (available from Kaneka); - Desmoseal® SXP2636 (available from Bayer); - SPUR + e 1050M (available from Momentive); - SPUR + e Y19116 (available from Momentive); Silane A1120, N- (beta-aminoethyl) -gammaaminopropyltrimethoxysilane type catalyst, available from Momentive, Blansile 24T, colored sand having a real density (measured by pycnometer) of 2.65 and a density of apparent dry sand of 1.5, available from Sibelco, Spheriglass® 2024, a glass microbead having a particle size distribution ranging from 106 to 212 μm and a bulk density (measured according to ASTM D-3101). 78) unpacked about 1.17 kg / m3 and packed about 1.26 kg / m3, available from Potters, - Mikhart® 1T, calcium carbonate having a density of 2.7 and a mass Bulk volume of 0.7 g / cm.sup.3 and packed of 1 g / cm.sup.3, available from La Provençale, 3035662 22 - Hexamoll Dinch®, diisononyl ester plasticizer of 1,2-cyclohexane dicarboxylic acid, available from BASF, - Isopropanol solvent, - S ilane® A171, vinyltrimethoxysilane (CH3O) 3SiCH = CH2 moisture absorber, available from Wacker. The compositions of Examples 1 to 8 were prepared according to the following procedure: in a stirring mixer under nitrogen, the following constituents were introduced in the following order: 10-silylated polymer, - colored sand (if present), - carbonate calcium, - Glass microball, - Plasticizer, 15 - Solvent, - Moisture absorber, - Catalyst. The compositions are then packaged in an aluminum vacuum bag. The compositions of Examples 1 to 8 show the ingredients and proportions shown in Table 1 below. The proportions are expressed as a percentage by weight relative to the total weight of the joint mortar composition.
    [0049] Table 1: compositions of Examples 1 to 8 1 2 3 4 5 6 7 8 Geniosil® XB 502 18 16 Geniosil® STPE10 18 Geniosil® STPE30 18 ms® 303H 18 Desmoseal® SXP2636 18 SPUR + e 1050M 18 SPUR + ® Y19116 18 Silane® A1120 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 Blansil® 24T 64.1 0 64.1 64.1 64.1 64.1 64.1 64.1 Spheriglass® 2024 11 79.1 11 11 11 11 11 11 Mikhart® 1T 2 2 2 2 2 2 2 2 Hexamoll Dinch® 2 0 2 2 2 2 2 2 Solvent 1 1 1 1 1 1 1 1 Silane® A171 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 The compositions of Examples 1 and 2 differ essentially from each other in the nature of the filler: the composition of Example 1 comprises a majority of colored sand as a filler while the composition of Example 2 comprises a majority of glass beads as a filler. The compositions of Examples 3 to 8 correspond to the compositions of Example 1 in which the nature of the silylated polymer has been modified. These compositions 1 to 8 were compared to commercial comparative joint mortar compositions: Comparative Composition A: Composition comprising an epoxy binder having a CAS No. 28064-14-4, 3-aminomethyl-3,5,5- Trimethylcyclohexylamine as hardener, and sand (commercial product Weberj anointed poxy® available from Weber), - Comparative composition B: composition comprising a binder based on an aqueous dispersion of polyurethane and sand (commercial product TruColor® available from Bostik). Comparative Composition C: Composition comprising a cementitious binder and sand (Weber commercial fine seal product available from Weber).
    [0050] Surface tension of joints after curing in ambient air and at 23 ° C for 28 days Surface tension was evaluated using test inks. The test ink is quickly applied to the surface of the sample using the brush built into the bottle. One begins directly with an ink having a high surface tension (for example 72 mN / m). If the brush stroke on the edges is stable for two seconds, the surface is easily wettable. The surface tension of the substrate corresponds to at least the value of the test ink. If the brush stroke of the test ink contracts, the test is continued with the next lower ink. In this way, the value of the surface tension of our sample is progressively approached. The surface tension of the material is equal to the value of the last ink tested which showed good wetting for at least 2 seconds. The surface tensions are shown in Table 2 below.
    [0051] Table 2: Surface tensions Surface tension Comparative composition B 40 dynes Comparative composition A 60 dynes Example 1 30 dynes Example 2 30 dynes The lower the surface tension, the greater the resistance to stainability. It can be seen that the seals according to the invention are easier to clean and more stain resistant than commercial epoxy-based seals or an aqueous polyurethane dispersion.
    [0052] After 1 month at 40 ° C and intense exposure under U.V lamp To check the U.V resistance of the compositions, the compositions of Examples 1 and 2 were applied to faience in 1 cm thickness. The products were allowed to cure for 7 days and then placed under U.V lamp at 40 ° C for 1 month. The ultraviolet lamp (model HQL 400) has a power of 400W and a luminous flux of 22 000 Lm. A colorimeter (Minolta brand, model CR-400) was used to evaluate the color, before and after exposure to the UV lamp. Parameters L, a and b were measured before exposure (washing, before and after) and after exposure (after, after and after) and the difference found for each parameter is shown in Table 3 below (Wash-off, before-after, bounce-baprès). The sum in absolute value of the three differences (delta) is also calculated and makes it possible to quantify the UV resistance Table 3: differences of the parameters L, a and b before and after exposure and sum of the differences in absolute value (delta) Lavant- The after-before-after-delta-delta Comparative composition B 0.15 0.15 -0.17 17.82 Comparative composition A -4.31 0.06 0.22 4.59 Example 1 0.35 0.02 0, 0.62 Example 20 -0.18 0.55 0.73 It is considered that if the delta is less than or equal to 2, the color difference is not perceptible to the eye of the user. In particular, Table 3 shows that the comparative composition based on epoxy binder changes color after UV exposure, especially the yellowing epoxy composition when exposed to UV.
    [0053] Chemical Resistance and Mechanical Strength The chemical resistance can be evaluated according to the EN 12808-1 standard of January 2009. The mechanical strength can be evaluated by measuring the Shore D hardness according to the ISO 868 standard of March 2003. In particular, the resistance The chemical is evaluated by measuring the mass absorption percentage of the seal when said seal is immersed in different solutions and the mechanical strength is evaluated by measuring the Shore D hardness of the seal before and after immersion of the joints in different solutions. In accordance with the EN 12808-1 standard of January 2009, these tests were carried out on samples after 28 days of curing in air (23 ° C and 50% relative humidity). The samples are then immersed for 3 days in 5 different chemical solutions at 23 ° C. The samples were also immersed in water at 50 ° C for 3 days. The mass percentage of absorption when the joints are immersed in water at 50 ° C for 3 days is shown in Table 4 below, where the "mass before test" refers to the mass of the seal before immersion and the "Mass after test" means the mass of the joint after immersion. Table 4: measurement of the chemical resistance - immersion for 3 days in water at 50 ° C Mass before test Mass after test% by weight (in gram) (in gram) of absorption Composition 1 22.9 22.9 0, 00 Composition 2 16.8 16.9 0.30 Composition 3 17.1 17.9 4.68 Composition 4 22.7 23 1.32 Composition 5 18 18.1 0.56 Composition 6 16.5 16.9 2 , 42 Composition 7 18.6 19.6 5.38 Composition 8 26 26.6 2,31 Composition A 24,32 24,45 0,53 Composition B 26,95 29,5 9,46 Composition C 27 32,5 20.4 The sealant mortar compositions according to the invention have water absorption mass percentages quite acceptable, in particular the water intake is less than 7% for all compositions 1 to 8. on the contrary, the comparative composition C has a water intake that is much too high.
    [0054] The percentage of hardness loss when the seals are immersed in water at 50 ° C for 3 days is shown in Table 4a below, where the "pre-test hardness" refers to the Shore D hardness of the seal before immersion and "hardness after test" means the Shore D hardness of the seal after immersion. Table 4a: Measurement of mechanical strength - immersion 3 days in water at 50 ° C Hardness before test Hardness after test% loss of hardness Composition 1 70 68 2.86 Composition 2 60 58 3.33 Composition 3 18 17 5,56 Composition 4 12 12 0,00 Composition 5 15 14 6,67 Composition 6 23 21 8,70 Composition 7 16 15 6,25 Composition 8 18 17 5,56 Composition A 80 75 6,25 Composition B 52 33 36 Composition C 60 40 33,33 The sealant compositions according to the invention have a percentage of loss of hardness quite acceptable, in particular the loss of hardness is less than 15% for all compositions 1 to 8. In contrast, comparative compositions B and C have a hardness loss of greater than 30%. The mass percentage of absorption when the seals are immersed in 20% citric acid at a temperature of 23 ° C for 3 days is shown in Table 5 below, where the "test mass" refers to the mass of the seal before immersion and "mass after test" means the mass of the seal after immersion.
    [0055] TABLE 5 Measurement of chemical resistance - immersion for 3 days in 20% citric acid at 23 ° C. Mass before test Mass after test% by mass (in grams) (in gram) of absorption Composition 1 16, 4 16.5 0.61 Composition 2 18.6 18.7 0.54 Composition 3 24.5 26.8 9.39 Composition 4 17.7 19.3 9.04 Composition 5 14.3 15.4 7, 69 Composition 6 18.2 19.5 7.14 Composition 7 25.2 26.8 6.35 Composition 8 25 27.1 8.40 Composition A 24.92 25.15 0.92 Composition B 27.25 29, 6.72 Composition C - - - The sealant mortar compositions according to the invention have quite acceptable mass percentages of citric acid absorption, in particular the solids content is less than 10% for the On the contrary, the cement-based seal (composition C) was destroyed during immersion for 3 days in 20% citric acid.
    [0056] The percentage of hardness loss when the seals are immersed in 20% citric acid at a temperature of 23 ° C for 3 days is shown in Table 5bis below, where "hardness before testing" refers to the Shore D hardness of the seal before immersion and the "hardness after test" refers to the Shore D hardness of the seal after immersion.
    [0057] TABLE 5a: Measurement of mechanical strength - immersion for 3 days in 20% citric acid at a temperature of 23 ° C. Hardness before test Hardness after test% loss of hardness Composition 1 70 70 0.00 Composition 2 60 55 8,33 Composition 3 18 15 16,67 Composition 4 12 10 16,67 Composition 5 15 13 13,33 Composition 6 23 20 13,04 Composition 7 16 14 12,50 Composition 8 18 15 16,67 Composition A 80 80 0.00 Composition B 52 47 9.62 Composition C 60 0 100 The sealant compositions according to the invention have a percentage of loss of hardness quite acceptable, in particular the loss of hardness is less than 20%. all the compositions 1 to 8. On the contrary, the cement-based seal (composition C) was destroyed during immersion for 3 days in 20% citric acid.
    [0058] The mass percentage of absorption when the joints are immersed in 20% basic calcium hydroxide solution (Ca (OH) 2) at a temperature of 23 ° C. for 3 days is shown in Table 6 below. where "test mass" refers to the mass of the seal before immersion and "mass after test" refers to the mass of the seal after immersion.
    [0059] Table 6: Chemical Resistance Measurement - Immersion 3 days in Ca (OH) 2 at 20% at 23 ° C. Mass before test Mass after test% by mass (in grams) (in grams) absorption Composition 1 26, 3 26.3 0.00 Composition 2 22.1 22.2 0.45 Composition 3 23.4 23.6 0.85 Composition 4 19.0 19.0 0.00 Composition 5 16.6 16.7 0, 60 Composition 6 21.1 21.2 0.47 Composition 7 23.8 23.9 0.42 Composition 8 21.9 21.9 0.00 Composition A 27.43 27.56 0.47 Composition B 23.25 24.65 6.02 Composition C 27 32.5 20.4 The sealant mortar compositions according to the invention have fully acceptable calcium hydroxide absorption percentages, in particular the solids content. less than 5% for all of the compositions 1 to 8. In contrast, the setting weight is respectively 6.02% for the comparative composition B based on an aqueous dispersion of polyurethane and 20.4% for the comparative composition C based on cement.
    [0060] The percentage of hardness loss when the seals are immersed in 20% basic calcium hydroxide solution (Ca (OH) 2) at 23 ° C for 3 days is shown in Table 6a below. where "test hardness" refers to the Shore D hardness of the seal before immersion and "test hardness" refers to the Shore D hardness of the seal after immersion.
    [0061] Table 6a: Measurement of mechanical strength - immersion 3 days in 20% Ca (OH) 2 at 23 ° C Hardness before test Hardness after test% loss of hardness Composition 1 70 66 5,71 Composition 2 60 58 3 , 33 Composition 3 18 17 5,56 Composition 4 12 11 8,33 Composition 5 15 14 6,67 Composition 6 23 22 4,35 Composition 7 16 15 6,25 Composition 8 18 17 5,56 Composition A 80 80 0, Composition B 52 46 11.54 Composition C 60 50 16.67 The sealant compositions according to the invention have a very acceptable percentage loss of hardness, in particular the loss of hardness is less than 15%. all of the compositions 1 to 8. As shown in Table 6a, the loss of hardness of the compositions 1 to 8 according to the invention is lower than the loss of hardness of the comparative compositions B and C.
    [0062] The mass percentage of absorption when the seals are immersed in a solution of glycol ether at a temperature of 23 ° C for 3 days is shown in Table 7 below, where the "mass before test" designates the mass. seal before immersion and "mass after test" refers to the mass of the seal after immersion.
    [0063] The glycol ether is used in cleaning products such as window washers.
    [0064] TABLE 7 Measurement of chemical resistance - immersion for 3 days in 20% glycol ether at 23 ° C. Mass before test Mass after test% by weight (in grams) (in gram) of absorption Composition 1 24 , 5 24.8 1.22 Composition 2 18.7 18.9 1.07 Composition 3 26.6 30 12.78 Composition 4 23.2 25.2 8.62 Composition 5 15.2 16.7 9.87 Composition 6 20.5 22.5 9.76 Composition 7 24.4 28 14.75 Composition 8 29.5 32.5 10.17 Composition A 26.25 26.61 1.37 Composition B 33.52 49.81 48.6 Composition C 27 32.5 20.4 The sealant mortar compositions according to the invention have fully acceptable glycol ether absorbance percentages, in particular the caking is less than 18. % for all of the compositions 1 to 8. In contrast, the setting weight is respectively 48.6% for the comparative composition B based on an aqueous dispersion of polyurethane and 20.4% for the comparative composition C cement-based.
    [0065] The percentage of hardness loss when the seals are immersed in a glycol ether solution at a temperature of 23 ° C for 3 days is shown in the table Ibis below, where "hardness before testing" refers to hardness. Shore D of the seal before immersion and the "hardness after test" refers to the Shore D hardness of the seal 15 after immersion.
    [0066] 3035662 33 Table Ibis: measurement of mechanical strength - immersion for 3 days in 20% glycol ether at 23 ° C Hardness before test Hardness after test% loss of hardness Composition 1 70 55 21,43 Composition 2 60 50 16 , 67 Composition 3 18 14 22,22 Composition 4 12 10 16,67 Composition 5 15 12 20,00 Composition 6 23 18 21,74 Composition 7 16 13 18,75 Composition 8 18 14 22,22 Composition A 80 65 18, Composition B 52 0 100 Composition C 60 40 33.33 The sealant compositions according to the invention have a very acceptable percentage loss of hardness, in particular the hardness loss is less than 25% for the set of compositions 1 to 8. As shown in Table 7a, the hardness loss of compositions 1 to 8 according to the invention is lower than the loss of hardness of comparative compositions B and C.
    [0067] It is observed that the chemical resistance and strength of the sealant compositions according to the invention is better than the compositions B and C where the binder is an aqueous binder or a cementitious binder. It is also noted that the chemical and mechanical resistance of the joint mortar compositions according to the invention is of the same order of magnitude as the chemical and mechanical resistance of the composition A where the binder is based on epoxy. It is noted that the sealant compositions of Examples 1 and 2 wherein the binder comprises a silylated polymer of formula (IVa), exhibit improved chemical resistance over the epoxy composition A.
    [0068] Thus, the sealant mortar composition according to the invention exhibits both good stain resistance, good UV resistance and good chemical resistance. In particular, the sealant composition according to the invention can easily be cleaned, that is, the excess composition present on the tiles or blades can easily be removed. The sealant composition according to the invention is easier to clean and has a durable coloration over time due to its greater UV resistance than an epoxy composition. Of course, the present invention is not limited to the examples and embodiments described and shown, but it is capable of numerous variants accessible to those skilled in the art.
    权利要求:
    Claims (15)
    [0001]
    REVENDICATIONS1. Use of a composition comprising at least one silylated polymer comprising at least one alkoxysilane group, at least one catalyst and at least one filler as grouting mortar.
    [0002]
    2. Use of a composition comprising at least one silylated polymer comprising at least one alkoxysilane group, at least one catalyst and at least one filler for making joints of a surface coating.
    [0003]
    3. Use according to claim 2, wherein the seal is a tile joint or a seal between LVT blades.
    [0004]
    4. Use according to one of claims 1 to 3, wherein the silylated polymer comprising at least one alkoxysilane group is chosen from silylated polyethers comprising at least one alkoxysilane group and silylated polyurethanes comprising at least one alkoxysilane group, alone or in combination with mixed.
    [0005]
    5. Use according to one of claims 1 to 4, wherein the silylated polymer comprising at least one alkoxysilane group is chosen from polymers of formulas (II), (III), (IVa), (IVb) or (V) below: (R 50) 3 - (R 4) p Si - R 3 - NH - C - [OR 2], O 0 - C - NH - R 1 - NH - C - [OR 2], O O - C - NH - R 3 - If (R4) p (OR5) 3_p 0 m1 (R50) 3_p (R4) pSi - R3 - [OR2] n - O - R3 - Si (R4) p (OR5) 3 - (R4) p (OR5) r (OR5 ) 2.t ER50) 3.pSi - 01ci Si (O - Si) u R3 - NH - C - [OR2], O - C - NH - R1 - NH - C - [OR2], (Rzt) s (R4) ) M0 (OR5) 2-t (0)) r (R4) p0-C-NH-R3 (Si-O> Si [O-Si (OR5)) (Ri) m1 (IVa) 3035662 (R4) p (OR5) r (OR5) 2 t ER5O) 3_pSi - 01 Si (O - Si) - R3 - N - O - NH - R1 to I, u III ( R-) (R4) t R6 0 36 NH-C- [OR2] nOC-NH-R10 (OR5) 24 (OR5I) r (R4) p NH-O-N-R-1 (Si-O) - If E0 - Si (OR5) 31 R6 (R4) t (R4) ss 50) 4 1 3p (R (R) pSi - R3 - N - C - NH - RR - O (IVb) NH - C - [OR2] n - O - C - NH - R 0 O (V) NH - C - N - R3 - Si (R4) p OR5) 3_p 0 R 'm in formulas (II), (III), (IVa), (IVb) and (V): - Ri represents a divalent hydrocarbon radical comprising from 5 to 15 carbon atoms which may be aromatic or Aliphatic, linear, branched or cyclic, - R 3 represents a linear or branched divalent alkylene radical comprising from 1 to 6 carbon atoms, - R 2 represents a divalent linear or branched alkylene radical comprising from 2 to 4 carbon atoms, - R 4 and R5, which may be identical or different, each represents a linear or branched alkyl radical comprising from 1 to 4 carbon atoms; R 6 represents a hydrogen atom, a phenyl radical or a linear, branched or cyclic alkyl radical comprising from 1 to 6; carbon atoms, n is an integer such that the average molar mass of the polyether block of formula -PRI is from 300 g / mol to 40000 g / mol, 25-ml is zero or an integer such that the mass molar average of the polymer ranges from 500 g / mole to 50000 g / mole, - m is an integer other than zero such that the average molar mass of the polymer is from 500 g / mol to 50000 g / mol, - p is an integer equal to 0, 1 or 2, 30 - q, r and s are integers equal to 0, 1 or 3 such that the sum q + r + s is equal to 3, - t is an integer equal to 0, 1 or 2, - u is an integer ranging from 0 to 8. 35
    [0006]
    6. Use according to claim 5, wherein the composition comprises at least one polymer of formula (IVa). 3035662 37
    [0007]
    7. Use according to one of claims 1 to 6, wherein the filler is selected from sand, calcium carbonate, glass beads, glass, quartz, barite, alumina, mica, talc and preferably from sand, calcium carbonate and glass beads. 5
    [0008]
    8. Use according to one of claims 1 to 7, wherein the composition comprises at least two different charges.
    [0009]
    9. Use according to claim 8, wherein said at least two fillers are selected from sand, calcium carbonate, glass beads, glass, quartz, barite, alumina, mica, talc. and preferably from sand, calcium carbonate and glass beads.
    [0010]
    Use according to claim 7 or claim 9, wherein the sand is a colored sand.
    [0011]
    11. Use according to one of claims 1 to 10, wherein the composition comprises: from 8 to 30% by weight, preferably from 12 to 24% by weight, of at least one silylated polymer comprising at least one alkoxysilane group, - from 0.1 to 1% by weight, preferably from 0.3 to 0.5% by weight, of at least one catalyst, - from 5 to 85% by weight, preferably from 10 to 80 % by weight, of at least one filler, based on the total weight of the joint mortar composition.
    [0012]
    12. Use according to one of claims 1 to 11, wherein the composition further comprises at least one additive selected from plasticizers, solvents, pigments, moisture absorbers, UV stabilizers, flakes, materials. Fluorescents or luminescent materials.
    [0013]
    13. Use according to claim 12, wherein the composition comprises: from 8 to 30% by weight, preferably from 12 to 24% by weight, of at least one silylated polymer comprising at least one alkoxysilane group; 0.1 to 1% by weight, preferably 0.3 to 0.5% by weight, of at least one catalyst, 5 to 85% by weight, preferably 10 to 80% by weight at least one filler, from 0.1 to 20% by weight, preferably from 0.5 to 15% by weight, of at least one other additive chosen from plasticizers, solvents, in particular volatile solvents, pigments, moisture absorbers, UV stabilizers, flakes, fluorescent materials or luminescent materials, based on the total weight of the joint mortar composition.
    [0014]
    14. Surface coating comprising tiles or blades, characterized in that the joints between two tiles or two adjacent blades are made using a joint mortar composition as defined in one of claims 1 to at 13.
    [0015]
    15. A method of manufacturing a surface coating comprising tiles or blades separated from each other by at least one gap, said method comprising the steps of: a) applying a sealant mortar composition as defined in one of claims 1 to 13 in said gap, b) hardening of the joint mortar composition. 20
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    同族专利:
    公开号 | 公开日
    WO2016174009A1|2016-11-03|
    FR3035662B1|2017-05-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3429847A|1964-11-10|1969-02-25|Rhone Poulenc Sa|Organosilicon compounds and compositions containing the same|
    WO2004063246A1|2003-01-09|2004-07-29|Laticrete International, Inc.|Water-based epoxy grout|
    US20050148726A1|2003-12-30|2005-07-07|Coggio William D.|Stain resistant grout|
    US20130102713A1|2010-01-28|2013-04-25|Custom Building Products, Inc.|Rapid curing water resistant composition for grouts, fillers and thick coatings|
    WO2006049087A1|2004-11-01|2006-05-11|Kaneka Corporation|Process for production of polyether polymers and compositions containing the polymers|
    FR2925517B1|2007-12-21|2010-01-08|Bostik Sa|ADHESIVE SENSITIVE TO ADHESIVE PRESSURE STABLE IN TEMPERATURE.|
    US8263694B1|2008-04-07|2012-09-11|Starquartz Industries, Inc.|Polyurethane-containing grouts|
    FR2954341B1|2009-12-21|2014-07-11|Bostik Sa|ADHESIVE COMPOSITION RETICULABLE BY HEATING|FR3066765B1|2017-05-23|2019-06-14|Bostik Sa|SILYL LOW MODULE MASTIC COMPOSITION|
    EP3878909A1|2020-03-09|2021-09-15|Bostik SA|Silylated sealing composition with improved adhesion on metallic substrates|
    CN113174173A|2021-05-19|2021-07-27|广西标牌化学科技有限公司|Preparation process of environment-friendly stone-like paint|
    法律状态:
    2016-03-09| PLFP| Fee payment|Year of fee payment: 2 |
    2016-10-31| PLFP| Fee payment|Year of fee payment: 3 |
    2016-11-04| PLSC| Search report ready|Effective date: 20161104 |
    2017-03-13| PLFP| Fee payment|Year of fee payment: 3 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1553832A|FR3035662B1|2015-04-28|2015-04-28|USE OF A COMPOSITION BASED ON SILYLATED POLYMERS AS A JOINT MORTAR FOR SURFACE COATING|FR1553832A| FR3035662B1|2015-04-28|2015-04-28|USE OF A COMPOSITION BASED ON SILYLATED POLYMERS AS A JOINT MORTAR FOR SURFACE COATING|
    PCT/EP2016/059244| WO2016174009A1|2015-04-28|2016-04-26|Use of a composition made from silylated polymers as jointing mortar for a surface coating|
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