	US 12,441,877 B2
	Thermoplastic resin composition
Tae Hee Kim, Daejeon (KR); Ki Soo Lee, Daejeon (KR); Eun Ji Shin, Daejeon (KR); Seok Pil Sa, Daejeon (KR); Seul Ki Im, Daejeon (KR); Hyun Mo Lee, Daejeon (KR); Ji Hyun Park, Daejeon (KR); Yun Kon Kim, Daejeon (KR); and Seung Jung Yu, Daejeon (KR)
Assigned to LG Chem, Ltd., Seoul (KR)
Appl. No. 18/018,340
Filed by LG Chem, Ltd., Seoul (KR)
PCT Filed Aug. 6, 2021, PCT No. PCT/KR2021/010385 § 371(c)(1), (2) Date Jan. 27, 2023, PCT Pub. No. WO2022/031097, PCT Pub. Date Feb. 10, 2022.
Claims priority of application No. 10-2020-0099168 (KR), filed on Aug. 7, 2020; and application No. 10-2021-0103396 (KR), filed on Aug. 5, 2021.
Prior Publication US 2023/0287208 A1, Sep. 14, 2023
Int. Cl. C08L 53/00 (2006.01); C08F 2/38 (2006.01); C08F 4/64 (2006.01); C08F 4/659 (2006.01); C08F 210/16 (2006.01); C08F 293/00 (2006.01); C08F 297/06 (2006.01); C08L 23/14 (2006.01)

CPC C08L 53/00 (2013.01) [C08F 2/38 (2013.01); C08F 4/64013 (2013.01); C08F 210/16 (2013.01); C08F 293/005 (2013.01); C08F 297/06 (2013.01); C08L 23/14 (2013.01); C08F 4/65908 (2013.01); C08F 2410/01 (2013.01)]

20 Claims

1. A thermoplastic resin composition comprising:

(1) polypropylene; and

(2) a polyolefin-polystyrene-based multi-block copolymer satisfying the following conditions (a) and (b) in the temperature range of −80 to 40° C. in a graph showing an amount of change in loss tangent (tan δ) (y axis) according to temperature (x-axis) obtained by dynamic mechanical analysis (DMA):

(a) the height of a tan δ peak is 0.45 to 0.60; and

(b) the half-width of a tan δ peak is 22.5 to 30.0° C.