	US 12,491,478 B2
	Polyolefin resin composition for porous film
Sun Young Jung, Daejeon (KR); Chang Kyu Son, Daejeon (KR); Min Suk Jung, Daejeon (KR); Hee Won Cho, Daejeon (KR); and Kyung Hoon Kim, Daejeon (KR)
Assigned to LOTTE CHEMICAL CORPORATION, South (KR)
Appl. No. 18/253,330
Filed by LOTTE CHEMICAL CORPORATION, Seoul (KR)
PCT Filed Nov. 5, 2021, PCT No. PCT/KR2021/016074 § 371(c)(1), (2) Date May 17, 2023, PCT Pub. No. WO2022/108210, PCT Pub. Date May 27, 2022.
Claims priority of application No. 10-2020-0154902 (KR), filed on Nov. 18, 2020.
Prior Publication US 2024/0024825 A1, Jan. 25, 2024
Int. Cl. B01D 67/00 (2006.01); B01D 71/26 (2006.01); C08L 23/06 (2006.01); C08L 23/12 (2006.01)

CPC B01D 67/0027 (2013.01) [B01D 71/261 (2022.08); B01D 71/262 (2022.08); C08L 23/06 (2013.01); C08L 23/12 (2013.01); B01D 2323/081 (2022.08); B01D 2325/04 (2013.01); B01D 2325/24 (2013.01); B01D 2325/26 (2013.01); C08L 2205/025 (2013.01); C08L 2207/062 (2013.01)]

2 Claims

1. A polyolefin resin composition for a porous membrane, the polyolefin resin composition comprising:

20 wt % to 70 wt % of a high-density polyethylene having a melt flow index (190° C., 2.16 kg load) of 0.5 g/10 min to 1.5 g/10 min, a crystallization temperature of 115° C. to 125° C., and a degree of crystallinity of 75% or greater; and

30 wt % to 80 wt % of a high-crystallinity polypropylene having a melt flow index (230° C., 2.16 kg load) of 6 g/10 min to 10 g/10 min.