公开(公告)号：US20030130429A1

公开(公告)日：2003-07-10

申请号：US10213446

申请日：2002-08-07

Applicant: ATOFINA

Inventor： Alain Bouilloux ,  Christophe Lacroix

IPC: C08L023/00

CPC classification number: C08L23/10 ,  C08L23/06 ,  C08L23/0815 ,  C08L23/0853 ,  C08L23/0869 ,  C08L2314/06 ,  C08L2666/04

Abstract: The invention relates to a composition based on polypropylene homopolymer or copolymer and on an impact modifier comprising an ethylene/alkyl acrylate copolymer. This composition comprises substantially between 1 and 40% by weight of impact modifier and it may comprise an ethylene-based copolymer taken from the group comprising ethylene/acrylate copolymers, vinyl acetate copolymers, polyethylene obtained by metallocene catalysis or mPE and linear low-density polyethylene or LLDPE. The PP thus modified is useful for manufacturing motor-vehicle parts for example of the bumper or dashboard type, requiring good thermomechanical strength over a wide range of temperatures.

Abstract translation: 本发明涉及基于聚丙烯均聚物或共聚物的组合物以及包含乙烯/丙烯酸烷基酯共聚物的抗冲改性剂。 该组合物基本上包含1至40重量％的抗冲击改性剂，并且其可以包含乙烯/丙烯酸酯共聚物，乙酸乙烯酯共聚物，通过茂金属催化或mPE获得的聚乙烯和线性低密度聚乙烯的乙烯基共聚物 或LLDPE。 如此修改的PP可用于制造例如保险杠或仪表板类型的机动车零件，在宽的温度范围内需要良好的热机械强度。