公开(公告)号：KR1020040008806A

公开(公告)日：2004-01-31

申请号：KR1020020042507

申请日：2002-07-19

Applicant: 현대자동차주식회사

Inventor： 이성준 ,  박봉현 ,  함문석 ,  조성민

IPC: C08L23/10 ,  C08L23/16 ,  C08K3/00

CPC classification number: C08L23/12 ,  B29C45/0055 ,  B60J11/06 ,  C08K3/013 ,  C08L23/0815 ,  C08L23/16 ,  C08L2205/02

Abstract: PURPOSE: A polypropylene resin composition for the thinwall bumper cover for automobiles and a thinwall bumper cover prepared by injection molding the composition are provided, to improve stiffness and fluidity and to prevent the deformation after injection molding. CONSTITUTION: The polypropylene resin composition comprises 60-80 parts by weight of the high isotactic polypropylene resin which is a homopolymer of propylene or a copolymer of propylene and ethylene and has a melting index of 20-80 g/10 min (230 deg.C) and an isotactic index of 97-100; 10-30 parts by weight of an ethylene-α-olefin copolymer rubber; and 7-25 parts by weight of at least one inorganic filler selected from the group consisting of talc, calcium carbonate, calcium sulfate, magnesium oxide, calcium stearate, mica, silica, calcium silicate, clay and carbon black.

Abstract translation: 目的：提供一种用于汽车的薄壁保险杠盖的聚丙烯树脂组合物和通过注射成型组合物制备的薄壁保险杠盖，以改善注塑成型后的刚性和流动性并防止变形。 构成：聚丙烯树脂组合物包含60-80重量份作为丙烯均聚物或丙烯与乙烯共聚物的高全同立构聚丙烯树脂，其熔融指数为20-80g / 10min（230℃） ）和全同立构指数为97-100; 10-30重量份的乙烯-α-烯烃共聚物橡胶; 和7-25重量份的至少一种选自滑石，碳酸钙，硫酸钙，氧化镁，硬脂酸钙，云母，二氧化硅，硅酸钙，粘土和炭黑的无机填料。