| 摘要 |
PURPOSE:To obtain the titled composition having excellent flexibility, impact strength, moldability, etc., and suitable as an automobile part such as bumper, by compounding a specific propylene polymer with a hydrogenated derivative of a specific block copolymer, etc. CONSTITUTION:The objective composition can be produced by compounding (A) 50-70(wt)% propylene copolymer composed of (A1) a propylene-ethylene block copolymer having a melt flow rate of 1-100g/10min and (A2) a crystalline propylene-ethylene random copolymer having a melt flow rate of 1-100g/10min and a flexural modulus of 3,000-9,000kgf/cm<2> at an A1/A2 ratio of 8/2-2/8 by weight, (B) 10-45% hydrogenated derivative of a block copolymer of formula B-A-B' (A is conjugated diene polymer block; B and B' are polymer block of aromatic vinyl compound), (C) 1-30% amorphous ethylene-alpha-olefin random copolymer and (D) 0.01-5pts.wt. (based on 100pts.wt. of A+B+C) of a higher fatty acid amide. |
