MOLDABILITY MODIFIER FOR POLYPROPYLENE-BASED RESIN, AND POLYPROPYLENE-BASED RESIN COMPOSITION BY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To prevent the formation of flow mark in a propylene-based resin and also aiming at the improvement of appearance of its molded article. SOLUTION: This propylene-based block copolymer (i) is provided by consisting of a segment of (A) a crystalline propylene polymer part having≥500 g/10 min MFR (melt flow ratio) and a segment of (B) a propylene-ethylene random copolymer part having 10 to 50 wt.% ethylene content and≤10-5g/10 min MFR, and having 10 to 100 g/10 min MFR. And also, the above copolymer is used as a moldability-modifier of (ii) the propylene-based resin. COPYRIGHT: (C)2009,JPO&INPIT