US 12,227,639 B2
Thermoplastic resin composition and exterior material including the same
Daeun Sung, Daejeon (KR); Tae Hoon Kim, Daejeon (KR); Ho Hoon Kim, Daejeon (KR); Chun Ho Park, Daejeon (KR); Yong Hee An, Daejeon (KR); Jeongmin Jang, Daejeon (KR); and Wangrae Joe, Daejeon (KR)
Assigned to LG Chem, Ltd., Seoul (KR)
Appl. No. 17/764,438
Filed by LG CHEM, LTD., Seoul (KR)
PCT Filed Mar. 9, 2021, PCT No. PCT/KR2021/002884
§ 371(c)(1), (2) Date Mar. 28, 2022,
PCT Pub. No. WO2022/019431, PCT Pub. Date Jan. 27, 2022.
Claims priority of application No. 10-2020-0091653 (KR), filed on Jul. 23, 2020; and application No. 10-2021-0028289 (KR), filed on Mar. 3, 2021.
Prior Publication US 2022/0372268 A1, Nov. 24, 2022
Int. Cl. C08L 51/00 (2006.01); C08F 212/08 (2006.01); C08F 220/44 (2006.01); C08L 25/12 (2006.01); C08L 77/02 (2006.01)
CPC C08L 51/003 (2013.01) [C08F 212/08 (2013.01); C08F 220/44 (2013.01); C08L 25/12 (2013.01); C08L 77/02 (2013.01); C08L 2201/08 (2013.01); C08L 2203/30 (2013.01); C08L 2205/025 (2013.01); C08L 2205/035 (2013.01); C08L 2205/18 (2013.01); C08L 2207/53 (2013.01)] 15 Claims
 
1. A thermoplastic resin composition, comprising:
100 parts by weight of a styrene-based resin;
0.5 to 5 parts by weight of a first polyamide resin having a melting temperature (Tm) of 230° C. or less; and
0.5 to 10 parts by weight of a second polyamide resin having a melting temperature (Tm) of 250° C. or more,
wherein both the first and second polyamide resins have a relative viscosity (1 g per 100 mL of 96% aq. sulfuric acid) of 2.5 or less.