| 摘要 |
PROBLEM TO BE SOLVED: To obtain a polypropylene compsn. which exhibits an improved balance among physical properties, can be used for automotive interiors and exteriors, is excellent in moldability in thin-wall molding, and gives a molded article with flow marks greatly decreased. SOLUTION: This compsn. comprises (A) 54-65 wt.% crystalline ethylene- propylene block copolymer which has an MFR of 60-120 g/10 min, of which the homopolypropylene part has an isotactic pentad fraction of 96% or higher and an MFR of 150-250 g/10 min, and of which the ethylene-propylene copolymer part accounts for 5-10 wt.% of the block copolymer and has a propylene content of 60-70 wt.%, (B) 17-24 wt.% thermoplastic elastomer comprising at least one styrene-ethylene/butylene-styrene block copolymer, and (C) 15-25 wt.% talc having an average particle size of 5μm or lower. |
