公开(公告)号：US20160319118A1

公开(公告)日：2016-11-03

申请号：US15105492

申请日：2014-12-15

Applicant: BASELL POLIOLEFINE ITALIA S.R.L.

Inventor： PAOLA MASSARI ,  MARCO CIARAFONI ,  SANDER WILLEMS ,  JURGEN ROHRMANN

IPC: C08L23/12

CPC classification number: C08L23/12 ,  B29C45/0001 ,  C08K3/34 ,  C08L23/0815 ,  C08L23/16 ,  C08L2205/025 ,  C08L2207/02

Abstract: The present disclosure relates to a polypropylene composition for the production of molded articles, such as finished parts for the automotive industry, has melt flow rate (230° C., 2.16 kg) of at least 25 g/10 min and comprising: (A) 50-95% of a composition having an intrinsic viscosity of the fraction soluble in xylene at 25° C. of 3.0-5.0 dl/g; and (A1) 70-95% of a propylene homopolymer having a polydispersity index (PI) of 4.3-10, a fraction insoluble in xylene at 25° C. higher than 90% and an MFR (230° C., 2.16 kg) of 100-250 g/10 min; (A2) 5-30% of a copolymer of propylene with 36-44% of ethylene-derived units; (B) optionally up to 45% of a heterophasic propylene polymer, having an MFR (230° C., 2.16 kg) of 10-25 g/10 min, a flexural modulus higher than 1400 MPa, comprising 5-20% of a copolymer rubber component and 80-95% of a matrix propylene polymer component; (C) 2-10% of an ethylene based elastoplastic copolymer; and (D) optionally up to 20% of talc.

Abstract translation: 用于生产模制品的聚丙烯组合物，例如用于汽车工业的成品，其熔体流动速率（230℃，2.16Kg）为至少25g / 10min，包括：（A）50-95％ 在25℃下可溶于二甲苯的级分的特性粘度为3.0-5.0dl / g的组合物，其组成为：（Al）70-95％的多分散指数（PI）为4.3〜10的丙烯均聚物， 在25℃下不溶于二甲苯的馏分高于90％，MFR（230℃，2.16Kg）为100-250g / 10min; （A2）5-30％丙烯与36-44％乙烯衍生单元的共聚物; （B）任选多达45％的多相丙烯聚合物，MFR（230℃，2.16Kg）为10-25g / 10min，弯曲模量高于1400MPa，并且包含5-20％的共聚物橡胶 组分和80-95％的基质丙烯聚合物组分; （C）2-10％的乙烯基弹性共聚物; 和（D）任选地最多20％的滑石。