US 12,134,689 B2
Thermoplastic resin composition, method of preparing the same, and molded article manufactured using the same
Jeongmin Jang, Daejeon (KR); Tae Hoon Kim, Daejeon (KR); Chun Ho Park, Daejeon (KR); Da Eun Sung, Daejeon (KR); Yong Hee An, Daejeon (KR); Wangrae Cho, Daejeon (KR); and Ho Hoon Kim, Daejeon (KR)
Assigned to LG CHEM, LTD., Seoul (KR)
Appl. No. 17/299,256
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Sep. 11, 2020, PCT No. PCT/KR2020/012281
§ 371(c)(1), (2) Date Jun. 2, 2021,
PCT Pub. No. WO2021/054679, PCT Pub. Date Mar. 25, 2021.
Claims priority of application No. 10-2019-0114947 (KR), filed on Sep. 18, 2019; and application No. 10-2020-0114753 (KR), filed on Sep. 8, 2020.
Prior Publication US 2022/0033633 A1, Feb. 3, 2022
Int. Cl. C08L 25/12 (2006.01); C08F 265/02 (2006.01); C08L 23/08 (2006.01); C08L 51/04 (2006.01)
CPC C08L 25/12 (2013.01) [C08F 265/02 (2013.01); C08L 23/0815 (2013.01); C08L 51/04 (2013.01); C08L 2201/08 (2013.01); C08L 2205/025 (2013.01); C08L 2205/035 (2013.01)] 9 Claims
 
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,
wherein a weight ratio of the graft copolymer (A-1) to the graft copolymer (A-2) is 1:1.1 to 1:5,
wherein the aromatic vinyl polymer (B-1) is a styrene-acrylonitrile copolymer,
wherein the heat-resistant aromatic vinyl polymer (B-2) is an aromatic vinyl polymer comprising one or more selected from the group consisting of alpha-methylstyrene and maleimide-based compounds as a heat-resistant monomer, and
wherein the polyolefin elastomer (C) is one or more selected from ethylene-alpha-olefin copolymers.