# US 5,700,566 A · Heat resistant composite laminate > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,700,566 A - Document ID: US5700566A - Status: Granted - Kind: A - Application number: 08/540,766 - Filed: 1995-10-11 - Granted: 1997-12-23 - Earliest claimed: 1994-10-12 - Assignees: Roehm GmbH Chemische Fabrik - Inventors: Michael Muller; Volker Benz; Uwe Numrich; Horst Puhler; Wilhelm Wopker - Web page: https://patentgrep.com/patent/US5700566A ## CPC - B32B 27/08: of synthetic resin - B29C 48/21: the layers being joined at their surfaces - B32B 5/18: characterised by features of a layer {of} foamed material - B32B 27/065: {of foam} - B32B 27/20: using fillers, pigments, thixotroping agents - B32B 27/302: {comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers} - B32B 27/308: {comprising acrylic (co)polymers} - C08L 33/12: Homopolymers or copolymers of methyl methacrylate - C08L 33/20: Homopolymers or copolymers of acrylonitrile (C08L55/02 takes precedence) - B29C 48/07: Flat, e.g. panels - B29C 48/17: the components having different colours - B29K 2033/12: {Polymers of methacrylic acid esters, e.g. PMMA, i.e. polymethylmethacrylate} - B29L 2031/769: {Sanitary equipment (diapers B29L2031/4878)} - B32B 2305/08: Reinforcements - B32B 2309/105: Thickness - B32B 2325/00: Polymers of vinyl-aromatic compounds, e.g. polystyrene - B32B 2333/08: Polymers of acrylic acid esters, e.g. PMA, i.e. polymethylacrylate - B32B 2333/12: Polymers of methacrylic acid esters, e.g. PMMA, i.e. polymethylmethacrylate - B32B 2355/02: ABS polymers, i.e. acrylonitrile-butadiene-styrene polymers - B32B 2555/00: Personal care - C08F 212/10: with nitriles - C08F 236/10: with vinyl-aromatic monomers - C08F 236/12: with nitriles - C08L 2205/02: containing two or more polymers of the same C08L -group - C08L 2205/03: containing three or more polymers in a blend - Y10T 428/26: Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension - Y10T 428/29: Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof - Y10T 428/2915: including textile, cloth or fabric - Y10T 428/3192: Next to vinyl or vinylidene chloride polymer - Y10T 428/31928: Ester, halide or nitrile of addition polymer - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS - B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The invention relates to composites VS comprising at least two plastic layers A and C, suitable for the production of articles which, on one surface, come into contact with water at temperatures between 0.degree. and 90.degree. C., wherein the layer A, which comes into contact with water, comprises a thermoplastic, impact-resistant polymethyl methacrylate plastic SP having a Vicat softening temperature of at least 95.degree. C. according to ISO 306 procedure B and a notch impact resistance of at least 3.0 kJm.sup.-2 according to ISO 180 1A, and layer C comprises an impact-resistant acrylonitrile-styrene copolymer VP. In a preferred specific embodiment of the invention, another layer B, made of a thermoplastic polymethyl methacrylate plastic P, is placed between layers A and C. ## Claims ### Claim 1 A composite suitable for the production of articles, said composite comprising a layer A, said layer A having a non-laminated outer surface which comes into contact with water exhibiting temperatures between 0.degree. and 90.degree. C., said composite comprising: i) layer A consisting essentially of a thermoplastic, impact-resistant polymethyl methacrylate plastic comprising a core-shell structure, having a Vicat softening temperature of at least 95.degree. C. according to ISO 306 procedure B and a notch impact resistance of at least 3.0 kJm.sup.-2, according to ISO 180 1A; and ii) layer C, an impact-resistant acrylonitrile styrene copolymer. ### Claim 2 (depends on 1) The composite of claim 1, further comprising a layer B, a thermoplastic polymethyl methacrylate plastic, located between layer A and layer C. ### Claim 3 (depends on 1) The composite of claim 1, further comprising a reinforcement layer D, made of a curable cast resin, formed on an exterior surface of layer C which is opposite to layer A. ### Claim 4 (depends on 1) The composite of claim 1, wherein said composite is produced by coextrusion of layer A and layer B. ### Claim 5 (depends on 1) The composite of claim 1, wherein a thickness of layer A is between 0.2 and 5 mm and a thickness of layer C is between 0.5 and 20 mm. ### Claim 6 (depends on 2) The composite of claim 2, wherein a thickness of layer A is between 0.2 and 5 mm; a thickness of layer B, is between 0.5 and 20 mm; and a thickness of layer C, is between 0.5 and 20 mm. ### Claim 7 (depends on 2) The composite of claim 2, wherein a thickness of layer A is between 0.5 and 3 mm; a thickness of layer B is between 1 and 10 mm; and a thickness of layer C, is between 1 and 10 mm. ### Claim 8 (depends on 3) The composite of claim 3, wherein a thickness of said reinforcement layer D is between 3 and 20 mm. ### Claim 9 (depends on 1) The composite of claim 1, wherein layer A further comprises 0.1 to 10 wt. %, based on polymer SP of an element selected from the group consisting of pigments, UV absorbers, pigments and a mixture thereof. ### Claim 10 (depends on 3) The composite of claim 3, wherein said reinforcement layer D further comprises 5 to 40 wt %, based on said curable cast resin, of a fillers selected from the group consisting of minerals or fibrous substances. ### Claim 11 (depends on 3) The composite of claim 3, wherein said curable cast resin is a polyurethane resin or a resin formed from fractions of styrene and unsaturated polyesters. ### Claim 12 (depends on 1) The composite of claim 1, wherein said impact-resistant acrylonitrile-styrene copolymer is an acrylonitrile-butadiene-styrene terpolymer. ### Claim 13 (depends on 3) The composite of claim 3, wherein said reinforcement layer D is foamed. ### Claim 14 (depends on 1) The composite of claim 1, wherein the impact-resistant polymethyl methacrylate plastic of layer A comprises: i) 1-80 wt. % of an at least two-stage emulsion polymer; and ii) 20-99 wt. % of a polymethyl methacrylate plastic. ### Claim 15 (depends on 14) The composite of claim 14, wherein said at least two-stage emulsion polymer comprises: i') a core of a crosslinked polyacrylate; and ii') an outer shell of a polymethyl methacrylate plastic. ### Claim 16 (depends on 14) The composite of claim 14, wherein said at least-two stage emulsion polymer has a particle diameter of from 0.1 to 3 .mu.m. ### Claim 17 (depends on 2) The composite of claim 2, wherein said thermoplastic polymethyl methacrylate plastic is formed from a monomer mixture comprised of: i) 80-100 wt. % of methyl methacrylate; and ii) 0 to 20 wt. % of a copolymerizable monomer selected from the group consisting of a C.sub.1-4 alkyl acrylate, a vinyl aromatic and a mixture thereof. ### Claim 18 A three-dimensionally shaped sanitary article, wherein said article is formed from a composite comprising: i) layer A consisting essentially of a thermoplastic, impact-resistant polymethyl methacrylate plastic which comes into contact with water, comprising a core-shell structure having a Vicat softening temperature of at least 95.degree. C. according to ISO 306 procedure B and a notch impact resistance of at least 3.0 kJm.sup.-2, according to ISO 180 1A; and ii) layer C, an impact-resistant acrylonitrile styrene copolymer. ### Claim 19 (depends on 18) The three-dimensionally shaped sanitary article of claim 18, wherein said sanitary article has a concave surface and a corresponding convex surface wherein an exterior surface of said layer A is on said concave portion of said sanitary article which comes into contact with water.