US 12,325,791 B2
Thermoplastic resin composition
Da Eun Sung, Daejeon (KR); Tae Hoon Kim, Daejeon (KR); Chun Ho Park, Daejeon (KR); Yong Hee An, Daejeon (KR); Wang Rae Joe, Daejeon (KR); Ho Hoon Kim, Daejeon (KR); and Jeong Min Jang, Daejeon (KR)
Assigned to LG CHEM, LTD., Seoul (KR)
Appl. No. 17/440,684
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Jan. 27, 2021, PCT No. PCT/KR2021/001099
§ 371(c)(1), (2) Date Sep. 17, 2021,
PCT Pub. No. WO2021/157945, PCT Pub. Date Aug. 12, 2021.
Claims priority of application No. 10-2020-0012607 (KR), filed on Feb. 3, 2020; and application No. 10-2021-0010900 (KR), filed on Jan. 26, 2021.
Prior Publication US 2022/0177692 A1, Jun. 9, 2022
Int. Cl. C08L 51/04 (2006.01)
CPC C08L 51/04 (2013.01) [C08L 2205/025 (2013.01); C08L 2205/03 (2013.01)] 12 Claims
 
1. A thermoplastic resin composition comprising:
a first graft copolymer including a first acrylic rubber polymer;
a second graft copolymer including a second acrylic rubber polymer;
a first styrene-based copolymer including an alkyl-substituted styrene-based monomer unit and an acrylonitrile-based monomer unit; and
a second styrene-based copolymer including an alkyl-unsubstituted styrene-based monomer unit and an acrylonitrile-based monomer unit,
wherein the first acrylic rubber polymer has an average particle diameter larger than that of the second acrylic rubber polymer,
the first graft copolymer is included in a larger amount than the second graft copolymer,
with respect to 100 parts by weight of the sum of the first graft copolymer, the second graft copolymer, the first styrene-based copolymer and the second styrene-based copolymer,
the sum of the first graft copolymer and the second graft copolymer is 22 parts by weight or less,
an amount of the first styrene-based copolymer is 5 to 30 parts by weight, and
an amount of the second styrene-based copolymer is 50 to 80 parts by weight.