公开(公告)号：US20230407067A1

公开(公告)日：2023-12-21

申请号：US18251005

申请日：2021-12-16

申请人： Dow Global Technologies LLC

发明人： Keran Lu ,  Russell T. Cooper ,  Mubashir Qamar Ansari ,  Fengyi Zhang

IPC分类号： C08L23/08 ,  C08L23/06 ,  B29C45/00

CPC分类号： C08L23/0815 ,  C08L23/06 ,  B29C45/0001 ,  C08L2205/025 ,  C08L2205/06 ,  B29K2023/0658

摘要： A polyethylene composition comprising suitable for use in injection molding, the polyethylene composition comprising: from 2 wt. % to 25 wt. % of a high molecular weight component consisting of an ethylene/alpha-olefin copolymer, wherein the high molecular weight component has a density of from 0.910 g/cc to 0.971 g/cc, a melt index (12.16) of greater than 0.5 g/10 min to less than 1.5 g/10 min, a molecular weight distribution (Mw/Mn) of 6.0 to 20.0; from 75 wt. % to 98 wt. % a low molecular weight component consisting of an ethylene homopolymer or an ethylene/alpha-olefin copolymer, wherein the ethylene homopolymer or an and a molecular weight distribution (Mw/Mn) of less than 6.0; wherein the polyethylene composition has a shrinkage anisotropy that is less than the shrinkage anisotropy of the low molecular weight component.