| 摘要 |
PURPOSE:To provide a resin composition for injection molding polypropylene resin, talc having specific particle diameter and an ethylene-propylene copolymer, etc., at specific ratios, having well-balanced rigidity and impact resistance and giving a container, etc., having little bottom warpage. CONSTITUTION:The injection molding resin composition having improved and well-balanced impact resistance and rigidity without lowering the physical properties of polypropylene resin is produced by compounding (A) 40-88wt.% of a polypropylene resin, (B) (x) wt.% of talc having particle diameter of 1-15mum and (C) (y) wt.% of one or more kinds of polymers selected from among ethylene-propylene copolymer, hydrogenated (styrene-isoprene block copolymer), hydrogenated (styrene-isoprene-styrene block copolymer), hydrogenated (styrene- butadiene block copolymer), hydrogenated (styrene-butadiene-styrene block copolymer), etc., at compounding ratios to satisfy the formulas 24<=2x-y, x-y<=45, 12<=x<=55 and 0<=y<=20. |
