| 摘要 |
PURPOSE:To provide a composition composed of a specific crystalline ethylene- propylene block copolymer, a thermoplastic elastomer, an amorphous propylene-alpha-olefin random copolymer and an inorganic filler and having excellent impact resistance, paintability, etc. CONSTITUTION:The objective composition contains (A) 35-74wt.% of one or more kinds of crystalline ethylene-propylene block copolymer having an ethylene- content of 5-20wt.% and a melt flow index(MFI) of 11-90 (preferably different melt flow indices in the case of using two or more kinds of the copolymers), (B) 20-40-wt.% of a thermoplastic elastomer (preferably ethylene-propylene rubber, etc.), (C) 1-15wt.% of an amorphous propylene-# a-olefin random copolymer (preferably propylene-ethylene random copolymer, etc.) having a number- average molecular weight of l,000-20,000 and a propylene content of 40-95wt.% and (E) 5-25-wt.% of an inorganic filler (preferably talc, etc.). |
