# US 2010/0167615 A1 · Method for surface hardening substances by application of particularly transparent polymethacrylate layers > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0167615 A1 - Document ID: US20100167615A1 - Status: Published application - Kind: A1 - Application number: 12/646,453 - Filed: 2009-12-23 - Published: 2010-07-01 - Earliest claimed: 2003-09-26 - Assignees: Evonik Roehm GmbH - Inventors: Uwe Numrich; Michael Wicker; Achim Neuhaeuser; Christoph Krohmer; Guenther Dickhaut-Bayer - Web page: https://patentgrep.com/patent/US20100167615A1 ## CPC - C09D 133/12: Homopolymers or copolymers of methyl methacrylate - C08L 23/04: Homopolymers or copolymers of ethene - C08L 27/06: Homopolymers or copolymers of vinyl chloride - C08L 27/16: Homopolymers or copolymers or vinylidene fluoride - C08L 67/00: Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain (of polyester-amides C08L77/12; of polyester-imides C08L79/08); Compositions of derivatives of such polymers - C08L 77/00: Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain (of polyhydrazides C08L79/06; of polyamideimides or polyamide acids C08L79/08); Compositions of derivatives of such polymers - Y10T 428/167: Cellulosic sections [e.g., parquet floor, etc.] - Y10T 428/23986: With coating, impregnation, or bond - Y10T 428/24033: including stitching and discrete fastener[s], coating or bond - Y10T 428/263: Coating layer not in excess of 5 mils thick or equivalent - Y10T 428/2874: including aldehyde or ketone condensation polymer [e.g., urea formaldehyde polymer, melamine formaldehyde polymer, etc.] - Y10T 428/31786: Of polyester [e.g., alkyd, etc.] - Y10T 428/31855: Of addition polymer from unsaturated monomers - Y10T 428/31935: Ester, halide or nitrile of addition polymer - Y10T 428/31938: Polymer of monoethylenically unsaturated hydrocarbon - Y10T 442/291: Coated or impregnated polyolefin fiber fabric - C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The present invention describes a process for the surface finishing of materials via application of specific polymethacrylate layers. The polymethacrylate layers are composed of blends of at least two (co)polymers of polymethacrylates, and specific “reactive monomers” are present here in a polymerized mixture which forms the polymethacrylate layer. At the application temperature established, these form a chemical and, where appropriate, also a physical bond to the substrate, and therefore have adhesion-promoting action. ## Claims ### Claim at position 1 1-6. (canceled) ### Claim at position 2 7: A composite material produced by a process, comprising: coating a surface of a first material, to obtain a composite material with a surface finish; wherein the surface finish is based on at least one thermoplastic polymethacrylate layer which is obtained by: mixing polymers for which the basis is provided by polymerized monomer mixtures a. and b., wherein a. comprises: A) from 20 to 100% by weight of methyl methacrylate, B) from 0 to 80% by weight of a (meth)acrylate of the formula I, other than methyl methacrylate, wherein R1 is a hydrogen or a methyl, and R2 is a linear or branched alkyl radical or cycloalkyl radical having from 1 to 18 carbon atoms or is phenyl or naphthyl, C) from 0 to 40% by weight of a further unsaturated monomer other than a.A) and a.B), but copolymerizable with these, wherein (a.A) to (a.C) together give 100% by weight of the copolymerizable constituents, and from 0 to 80 parts by weight of further polymers, and also amounts of from 0 to 150 parts by weight of conventional additives, are added to 100 parts by weight of this polymerized mixture; and b. comprises: A) from 20 to 99% by weight of a methyl (meth)acrylate of the formula I wherein R1 is a hydrogen or a methyl and R2 is a linear or branched alkyl radical or cycloalkyl radical having from 1 to 18 carbon atoms, or is phenyl or naphthyl, B) from 1 to 80% by weight of one or more ethylenically unsaturated “reactive monomers” other than b.A) but copolymerizable with (b.A), wherein (b.A) and (b.B) together give 100% by weight of the copolymerizable constituents, and from 0 to 80 parts by weight of further polymers, and also amounts of from 0 to 150 parts by weight of conventional additives, are added to 100 parts by weight of this polymerized mixture; and the polymethacrylate layer is applied to the material at temperatures which permit chemical bonding of the polymethacrylate layer to the material. ### Claim at position 3 (depends on 7) 8: The composite material according to claim 7, wherein the further polymer used comprises a member selected from the group consisting of polyvinylidene difluoride, PVC, polyethylene, polyester, and polyamides. ### Claim at position 4 (depends on 7) 9: The composite material according to claim 7, wherein said process for producing said composite material applies a melt by means of coextrusion coating or melt coating. ### Claim at position 5 (depends on 7) 10: The composite material according to claim 7, wherein said process for producing said composite material applies a film by colamination, extrusion lamination, adhesive bonding, coil coating, sheathing or high-pressure lamination. ### Claim at position 6 (depends on 7) 11: The composite material according to claim 7, wherein the first material is treated with an adhesive prior to application of the surface finish. ### Claim at position 7 (depends on 7) 12: The composite material according to claim 7, wherein no multilayer system or adhesive is used. ### Claim at position 8 (depends on 7) 13: The composite material according to claim 7, wherein chemical crosslinking between the polymethacrylate layer and the first material is developed via an elevated temperature during the process. ### Claim at position 9 (depends on 7) 14: The composite material according to claim 7, wherein interpenetration between said first material and said polymethacrylate layer occurs. ### Claim at position 10 (depends on 7) 15: The composite material according to claim 7, wherein component a.B) is butyl methacrylate, 2-ethylhexyl methacrylate, cyclohexyl methacrylate, phenyl methacrylate, or naphthyl methacrylate. ### Claim at position 11 (depends on 7) 16: The composite material according to claim 7, wherein component a.C) are styrene, a styrene derivative, vinyl esters, vinyl chloride, vinyl fluoride or olefins. ### Claim at position 12 (depends on 7) 17: The composite material according to claim 7, wherein said additive is calcium carbonate, titanium dioxide, calcium oxide, perlite, precipitated chalk, coated chalk, or fumed silica. ### Claim at position 13 (depends on 7) 18: The composite material according to claim 7, wherein component b.B) is capable of free-radical polymerization and has a functional group which can interact with the material to be coated. ### Claim at position 14 (depends on 18) 19: The composite material according to claim 18, wherein said functional group is an amino group, a (cyclic) amide group, an imide group, a hydroxy group, an (ep)oxy group, a carboxy group, or an (iso)cyano group. ### Claim at position 15 (depends on 7) 20: The composite material according to claim 7, wherein component b.B) is a nitrogen-containing vinyl heterocycle having a 5-membered ring alongside a 6-membered ring. ### Claim at position 16 (depends on 7) 21: The composite material according to claim 7, wherein component b.B) is selected from the group consisting of vinylimidazoles, vinyllactams, vinylcarbazoles, and vinylpyridines. ### Claim at position 17 (depends on 7) 22: The composite material according to claim 7, wherein component b.B) is selected from the group consisting of glycidyl methacrylate, maleic acid, maleic anhydride, methylmaleic anhydride, maleimide, methylmaleimide, maleamides, phenylmaleimide, cyclohexylmaleimide, fumaric acid derivatives, methacrylic anhydride, and acrylic anhydride. ### Claim at position 18 (depends on 7) 23: The composite material according to claim 7, wherein a ratio of the polymerized monomer mixtures a. and b. in the polymethacrylate-based surface finish is 50 to 99% by weight of the polymerized mixture a., to the corresponding amount of b to give 100% by weight. ### Claim at position 19 (depends on 7) 24: The composite material according to claim 7, wherein the first material is in the form of a film or sheet, or cut-to-size film or sheet. ### Claim at position 20 (depends on 7) 25: The composite material according to claim 7, wherein the first material is a polyethylene textile.