# US 5,708,088 A · Multiphase thermoplastic composition based on polyamide resin containing an ethylene polymer with an epoxide functional group > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,708,088 A - Document ID: US5708088A - Status: Granted - Kind: A - Application number: 08/546,991 - Filed: 1995-10-23 - Granted: 1998-01-13 - Earliest claimed: 1992-04-03 - Assignees: Elf Atochem S.A. - Inventors: Marius Hert; Patrice Perret - Web page: https://patentgrep.com/patent/US5708088A ## CPC - 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 - C08L 77/02: Polyamides derived from omega-amino carboxylic acids or from lactams thereof (C08L77/10 takes precedence) - C08L 77/06: Polyamides derived from polyamines and polycarboxylic acids (C08L77/10 takes precedence) - C08L 23/08: Copolymers of ethene (C08L23/16 takes precedence) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract The present invention relates to a multiphase thermoplastic composition based on polyamide resin containing at least one ethylene/alkyl (meth) acrylate/unsaturated epoxide terpolymer. ## Claims ### Claim 1 A multiphase thermoplastic composition based on polyamide resin; comprising the following: (A) from 50% to 95% by weight of at least one polyamide resin and (b) from 5% to 50% of at least one mixture selected from the group consisting of: (i) (a) terpolymer (I) which comprises an ethylene/alkyl (meth)acrylate/unsaturated epoxide; (b) polyethylenes and/or (c) copolymer II which comprises an ethylene/alkyl (meth)acrylate; and (ii) (a) terpolymer (I) which comprises an ethylene/alkyl (meth)acrylate/unsaturated epoxide; (b) polyethylenes and/or (c) copolymer II which comprises an ethylene/alkyl (meth)acrylate; and (d) terpolymer III which comprises an ethylene/alkyl (meth) acrylate/unsaturated anhydride of dicarboxylic acid. ### Claim 2 (depends on 1) A composition according to claim 1, wherein the terpolymer (I) comprises from 0.2 to 5 mole percent of at least one unit derived from an unsaturated epoxide, from 1 to 15 mole percent of at least one unit derived from an alkyl acrylate or methacrylate and has a melt index of between 1 and 50 dg/min, measured according to NFT standard 51-016 (conditions: 190.degree. C./2.16 kg load). ### Claim 3 (depends on 1) A composition according to claim 1, wherein the unsaturated epoxide in the terpolymer (I) is an aliphatic glycidyl ester. ### Claim 4 (depends on 3) A composition according to claim 3, wherein the aliphatic glycidyl ester is glycidyl methacrylate. ### Claim 5 (depends on 1) A composition according to claim 1, wherein the alkyl group of the alkyl acrylate or methacrylate forming part of the terpolymer (I) is linear, branched or cyclic and has up to 10 carbon atoms. ### Claim 6 (depends on 5) A composition according to claim 5, wherein the alkyl acrylate is ethyl acrylate. ### Claim 7 (depends on 1) A composition according to claim 1, wherein the copolymers (II) contain from 1 to 20 mole percent of units derived from alkyl acrylate or methacrylate and have a melt index of between 1 and 50 dg/min, measured according to NFT standard 51-016 (conditions: 190.degree. C./2.16 kg load). ### Claim 8 (depends on 1) A composition according to claim 1, wherein the alkyl group of the alkyl acrylate or methacrylate forming part of the copolymers (II) is linear, branched or cyclic and has up to 10 carbon atoms. ### Claim 9 (depends on 8) A composition according to claim 8, wherein the alkyl acrylate is n-butyl acrylate. ### Claim 10 (depends on 1) A composition according to claim 1, wherein the terpolymers (III) contain from 0.01 to 5 mole percent of units derived from anhydride of unsaturated dicarboxylic acid and from 2 to 20 mole percent of units derived from an alkyl acrylate or methacrylate and have a melt index of between 1 and 50 dg/min, measured according to NFT standard 51-016 (conditions: 190.degree. C./2.16 kg load). ### Claim 11 (depends on 10) A composition according to claim 10, wherein the terpolymers (III) contain from 0.1 to 2 mole percent of units derived from anhydride of unsaturated dicarboxylic acid. ### Claim 12 (depends on 1) A composition according to claim 1, wherein the anhydride or unsaturated dicarboxylic acid forming part of the terpolymers (III) is maleic anhydride. ### Claim 13 (depends on 1) A composition according to claim 1, wherein the alkyl group of the alkyl acrylate or methacrylate forming part of the terpolymers (III) is linear, branched or cyclic and has up to 10 carbon atoms. ### Claim 14 (depends on 13) A composition according to claim 13, wherein the alkyl acrylate is ethyl acrylate. ### Claim 15 (depends on 1) An article obtained from a composition according to claim 1. ### Claim 16 (depends on 2) A composition according to claim 2, wherein the unsaturated epoxide in the terpolymer (I) is an aliphatic glycidyl ester. ### Claim 17 (depends on 2) A composition according to claim 2, wherein the alkyl group of the alkyl acrylate or methacrylate forming part of the terpolymer (I) is linear, branched or cyclic and has up to 10 carbon atoms. ### Claim 18 (depends on 2) A composition according to claim 2, wherein the alkyl group of the alkyl acrylate or methacrylate forming part of the copolymers (II) is linear, branched or cyclic and has up to 10 carbon atoms. ### Claim 19 (depends on 10) A composition according to claim 10, wherein the anhydride or unsaturated dicarboxylic acid forming part of the terpolymers (III) is maleic anhydride. ### Claim 20 (depends on 11) A composition according to claim 11, wherein the anhydride or unsaturated dicarboxylic acid forming part of the terpolymers (III) is maleic anhydride. ### Claim 21 (depends on 10) A composition according to claim 10, wherein the alkyl group of the alkyl acrylate or methacrylate forming part of the terpolymers (III) is linear, branched or cyclic and has up to 10 carbon atoms. ### Claim 22 (depends on 1) The multiphase thermoplastic composition of claim 1 which possesses a Charpy impact strength at -40.degree. C. which ranges from at least about 22 kJ/m.sup.2 to about 36 kJ/m.sup.2 and which at -20.degree. C. possesses a Charpy impact strength ranging from at least about 33 kJ/m.sup.2 to about 42 kJ/m.sup.2.