公开(公告)号：US20240024825A1

公开(公告)日：2024-01-25

申请号：US18253330

申请日：2021-11-05

申请人： LOTTE CHEMICAL CORPORATION

发明人： Sun Young Jung ,  Chang Kyu Son ,  Min Suk Jung ,  Hee Won Cho ,  Kyung Hoon Kim

IPC分类号： B01D67/00 ,  B01D71/26 ,  C08L23/12 ,  C08L23/06

CPC分类号： B01D67/0027 ,  B01D71/261 ,  B01D71/262 ,  C08L23/12 ,  C08L23/06 ,  C08L2207/062 ,  C08L2205/025 ,  B01D2323/081 ,  B01D2325/26 ,  B01D2325/24 ,  B01D2325/04

摘要： Disclosed are a polyolefin resin composition usable in manufacturing a single-layered dry porous membrane having excellent meltdown and shutdown properties, and a porous membrane using the polyolefin resin composition. The present invention provides a polyolefin resin composition for a porous membrane, wherein the polyolefin resin composition includes 30 wt % to 70 wt % of a high-density polyethylene having a melt flow index (190° C., 2.16 kg load) of 0.1 g/10 min to 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 70 wt % of a high-crystallinity polypropylene having a melt flow index (230° C., 2.16 kg load) of 5 g/10 min to 20 g/10 min.