	US 12,264,240 B2
	Thermoplastic resin composition, method of preparing the same, and molded article including the same
Yong Hee An, Daejeon (KR); Tae Hoon Kim, Daejeon (KR); Chun Ho Park, Daejeon (KR); Daeun Sung, Daejeon (KR); Wangrae Joe, Daejeon (KR); and Jeongmin Jang, Daejeon (KR)
Assigned to LG CHEM, LTD, Seoul (KR)
Appl. No. 17/620,409
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Jun. 3, 2021, PCT No. PCT/KR2021/006917 § 371(c)(1), (2) Date Dec. 17, 2021, PCT Pub. No. WO2022/019471, PCT Pub. Date Jan. 27, 2022.
Claims priority of application No. 10-2020-0090490 (KR), filed on Jul. 21, 2020; and application No. 10-2021-0069027 (KR), filed on May 28, 2021.
Prior Publication US 2022/0348759 A1, Nov. 3, 2022
Int. Cl. C08L 51/00 (2006.01); B29C 48/00 (2019.01); B29K 25/00 (2006.01); B29K 33/00 (2006.01); C08L 25/12 (2006.01); C08L 25/16 (2006.01); C08L 33/12 (2006.01); C08L 51/04 (2006.01)

CPC C08L 51/003 (2013.01) [B29C 48/022 (2019.02); C08L 25/12 (2013.01); C08L 25/16 (2013.01); C08L 33/12 (2013.01); B29K 2025/08 (2013.01); B29K 2033/12 (2013.01); C08L 2205/025 (2013.01); C08L 2205/035 (2013.01); C08L 2205/18 (2013.01)]

15 Claims

1. A thermoplastic resin composition, comprising:

100 parts by weight of a base resin comprising

0.5 to 45% by weight of a graft copolymer (A-1) comprising

acrylate rubber having an average particle diameter of from 50 to 150 nm,

an aromatic vinyl compound, and

a vinyl cyanide compound,

20 to 80% by weight of a graft copolymer (A-2) comprising

acrylate rubber having an average particle diameter of from 151 to 600 nm,

an aromatic vinyl compound, and

a vinyl cyanide compound, and

15 to 45% by weight of an α-methylstyrene-based copolymer (B) having a weight average molecular weight of from 60,000 to 180,000 g/mol; and

0.5 to 10 parts by weight of an ultra-high molecular weight copolymer (C) having a weight average molecular weight of from 1,000,000 to 12,000,000 g/mol,

wherein a weight ratio of the graft copolymer (A-1) to the graft copolymer (A-2) is 1:3.3 to 1:5.