MOLDING MODIFIER FOR POLYPROPYLENE-BASED RESIN AND POLYPROPYLENE-BASED RESIN COMPOSITION USING THE SAME

摘要

PROBLEM TO BE SOLVED: To improve the appearance of molded articles by preventing the occurrence of flow marks of propylene-based resins. SOLUTION: A molding modifier for polypropylene-based resin comprises a propylene-based block copolymer having≥100 g/10 min MFR and composed of: a segment of a crystalline polypropylene polymer part (A) having≥500 g/10 min MFR; and a segment of a propylene-ethylene random copolymer part (B) having≤10-5g/10 min MFR. The polypropylene-based resin composition is obtained by blending the propylene-based block copolymer as a modifier with a propylene-based resin in the presence or absence of an elastomer or an inorganic filler. COPYRIGHT: (C)2009,JPO&INPIT