US 11,993,702 B2
Thermoplastic resin composition having high rigidity and low coefficient of linear thermal expansion and molded article comprising same
Jin Young Yoon, Gimpo-si (KR); Hee Joon Lee, Seoul (KR); Dong Eun Cha, Hwaseong-si (KR); Sun Jun Kwon, Seoul (KR); Chun Ho Park, Seoul (KR); Seung Ryong Jeong, Seoul (KR); Kyung Hwan Lim, Uiwang-si (KR); and Eun Hwa Jang, Uiwang-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); KIA CORPORATION, Seoul (KR); and LOTTE CHEMICAL CORPORATION, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); KIA CORPORATION, Seoul (KR); and LOTTE CHEMICAL CORPORATION, Seoul (KR)
Filed on Jul. 6, 2022, as Appl. No. 17/858,378.
Claims priority of application No. 10-2021-0088632 (KR), filed on Jul. 6, 2021.
Prior Publication US 2023/0017798 A1, Jan. 19, 2023
Int. Cl. C08L 23/16 (2006.01); C08L 23/10 (2006.01)
CPC C08L 23/16 (2013.01) [C08L 2205/025 (2013.01); C08L 2205/03 (2013.01); C08L 2205/06 (2013.01); C08L 2205/24 (2013.01)] 13 Claims
 
1. A thermoplastic resin composition comprising:
a base resin comprising a first polypropylene-based resin having a melt index (230° C., 2.16 kg) of 90 g/10 min to 110 g/10 min as measured by ASTM D1238, and a second polypropylene-based resin having a melt index (230° C., 2.16 kg) of 50 g/10 min to 70 g/10 min as measured by ASTM D1238;
an elastomer having a melt index (190° C., 2.16 kg) of 20 g/10 min to 35 g/10 min as measured by ASTM D1238; and
inorganic particles.