# US 2022/0033633 A1 · Thermoplastic resin composition, method of preparing the same, and molded article manufactured using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0033633 A1 - Document ID: US20220033633A1 - Status: Published application - Kind: A1 - Application number: 17/299,256 - Filed: 2020-09-11 - Published: 2022-02-03 - Earliest claimed: 2019-09-18 - Assignees: LG Chem, Ltd. - Applicants: LG Chem, Ltd. - Inventors: Jeongmin JANG; Tae Hoon KIM; Chun Ho PARK; Da Eun SUNG; Yong Hee AN; Wangrae CHO; Ho Hoon KIM - Web page: https://patentgrep.com/patent/US20220033633A1 ## CPC - C08L 25/12: with unsaturated nitriles - C08F 265/02: on to polymers of acids, salts or anhydrides - C08L 23/0815: {with aliphatic 1-olefins containing one carbon-to-carbon double bond} - C08L 51/04: grafted on to rubbers - C08L 33/12: Homopolymers or copolymers of methyl methacrylate - C08L 2201/08: Stabilised against heat, light or radiation or oxydation - C08L 2205/025: containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure - C08L 2205/03: containing three or more polymers in a blend - C08L 2205/035: containing four or more polymers in a blend - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS ## Abstract The present invention relates to a thermoplastic resin composition, a method of preparing the same, and a molded article manufactured using the same. More specifically, the thermoplastic resin composition of the present invention includes 100 parts by weight of a base resin consisting of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-1) containing acrylate rubber having an average particle diameter of 0.05 to 0.15 μm as a core, an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-2) containing acrylate rubber having an average particle diameter of 0.3 to 0.6 μm as a core, an aromatic vinyl polymer (B-1), and a heat-resistant aromatic vinyl polymer (B-2); and 0.5 to 10 parts by weight of a polyolefin elastomer (C). Within this range, the thermoplastic resin composition may have a heat deflection temperature (HDT) of 89° C. or more. ## Claims ### Claim 1 A thermoplastic resin composition, comprising: 100 parts by weight of a base resin consisting of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-1) containing acrylate rubber having an average particle diameter of 0.05 to 0.15 μm as a core, an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-2) containing acrylate rubber having an average particle diameter of 0.3 to 0.6 μm as a core, an aromatic vinyl polymer (B-1), and a heat-resistant aromatic vinyl polymer (B-2); and 0.5 to 10 parts by weight of a polyolefin elastomer (C), wherein the thermoplastic resin composition has a heat deflection temperature (HDT) of 89° C. or more. ### Claim 2 (depends on 1) The thermoplastic resin composition according to claim 1, wherein the graft copolymer (A-1) is contained in an amount of 1 to 30% by weight, the graft copolymer (A-2) is contained in an amount of 5 to 50% by weight, the aromatic vinyl polymer (B-1) is contained in an amount of 40 to 85% by weight, and the heat-resistant aromatic vinyl polymer (B-2) is contained in an amount of 5 to 50% by weight. ### Claim 3 (depends on 1) The thermoplastic resin composition according to claim 1, wherein the graft copolymer (A-1) and the graft copolymer (A-2) independently comprise 40 to 60% by weight of acrylate rubber, 25 to 45% by weight of an aromatic vinyl compound, and 10 to 20% by weight of a vinyl cyanide compound. ### Claim 4 (depends on 1) The thermoplastic resin composition according to claim 1, wherein a weight ratio of the graft copolymer (A-1) to the graft copolymer (A-2) is 1:1.1 to 1:5. ### Claim 5 (depends on 1) The thermoplastic resin composition according to claim 1, wherein the aromatic vinyl polymer (B-1) is an aromatic vinyl compound-vinyl cyanide compound copolymer. ### Claim 6 (depends on 1) The thermoplastic resin composition according to claim 1, wherein the heat-resistant aromatic vinyl polymer (B-2) comprises one or more selected from the group consisting of alpha-methylstyrene and maleimide-based compounds as a heat-resistant monomer. ### Claim 7 (depends on 1) The thermoplastic resin composition according to claim 1, wherein the polyolefin elastomer (C) comprises one or more selected from the group consisting of ethylene-alpha-olefin copolymers and linear low-density polyethylenes (LLDPEs). ### Claim 8 (depends on 1) The thermoplastic resin composition according to claim 1, wherein the polyolefin elastomer (C) has a melt index (190° C., 2.16 kg) of 0.3 to 20 g/10 minutes. ### Claim 9 (depends on 1) The thermoplastic resin composition according to claim 1, wherein the thermoplastic resin composition has an Izod impact strength (¼ inch, ASTM D1238) of 6 kg·cm/cm or more. ### Claim 10 (depends on 1) The thermoplastic resin composition according to claim 1, wherein the thermoplastic resin composition has a melt index (220° C., 10 kg) of 9 g/10 minutes or more. ### Claim 11 A method of preparing a thermoplastic resin composition, the method comprising: kneading and extruding, under conditions of 200 to 330° C. and 100 to 500 rpm, 100 parts by weight of a base resin consisting of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-1) containing acrylate rubber having an average particle diameter of 0.05 to 0.15 μm as a core, an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-2) containing acrylate rubber having an average particle diameter of 0.3 to 0.6 μm as a core, an aromatic vinyl polymer (B-1), and a heat-resistant aromatic vinyl polymer (B-2); and 0.5 to 10 parts by weight of a polyolefin elastomer (C), wherein the thermoplastic resin composition has a heat deflection temperature (HDT) of 89° C. or more. ### Claim 12 (depends on 1) A molded article, comprising the thermoplastic resin composition of claim 1. ### Claim 13 A thermoplastic resin composition, comprising: 100 parts by weight of a base resin consisting of 1 to 30% by weight of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-1) containing acrylate rubber having an average particle diameter of 0.05 to 0.15 μm as a core, 5 to 50% by weight of an acrylate-aromatic vinyl compound-vinyl cyanide compound graft copolymer (A-2) containing acrylate rubber having an average particle diameter of 0.3 to 0.6 μm as a core, 40 to 85% by weight of an aromatic vinyl polymer (B-1), and 5 to 50% by weight of a heat-resistant aromatic vinyl polymer (B-2); and 0.5 to 10 parts by weight of a polyolefin elastomer (C).