公开(公告)号：US09650505B2

公开(公告)日：2017-05-16

申请号：US14357503

申请日：2012-10-30

Applicant: Basell Poliolefine Italia S.r.l.

Inventor： Fabiana Fantinel ,  Sander Willems ,  Michele Grazzi ,  Giampaolo Pellegatti ,  Jurgen Rohrmann ,  Shahram Mihan

IPC: C08L23/06 ,  C08L23/08 ,  C08L23/10 ,  C08L23/12

CPC classification number: C08L23/12 ,  C08L23/06 ,  C08L23/0807 ,  C08L23/10 ,  C08L23/16 ,  C08L2205/02 ,  C08L23/0815 ,  C08L23/142

Abstract: Polyolefin compositions suitable for injection molded items e.g. for impact bumpers and car interiors comprising from 30% to 90% by weight of an heterophasic propylene polymer composition (A); and from 10% to 70% by weight of a multimodal ethylene/butene-1 copolymer (B); having density from 0.850 to 0.935 g/cm3, total comonomer content from 6% to 30% by weight, Mw/Mn from 4 to 20; intrinsic viscosity in decalin at 135° C. from 1.0 to 4.0 dL/g, and comprising an HDPE fraction (HDPE % wt) up to 30% wt; further comprising from 0 to 50% by weight of a filler (C) and optionally, in amount up to 10% by weight with respect to the overall composition, an impact modifier masterbatch component D consisting of an ultra-soft heterophasic copolymer component.