| abstract |
PURPOSE: The titled composition having improved molding flow properties, rigidity, etc., without damaging improved surface, etc., obtained by blending a straight-chain copolymer of ethylene and α-olefin with a crystalline propylene polymer and a thermoplastic elastomer. n CONSTITUTION: (A) 90W50pts.wt., preferably 80W60pts.wt. straight-chain copolymer of ethylene and 3W12C α-olefin having 5W150g/10min melt index(190°C) and 0.91W0.95g/cm 3 density is blended with (B) 10W50pts.wt., preferably 20W40 crystalline propylene polymer which is an ethylene propylene block copolymer having <25wt% ethylene content, has 2.5W100g/10min melt index(230°C), ≥0.5 the melt index of the component A and 0.89W0.92g/cm 3 density and (C) 1W25pts. wt. based on 100pts.wt. total amounts of the components A and B and 0.5 the amount of the component B blended of a thermoplastic elastomer (e.g., ethylene, propylene copolymer, etc.). n COPYRIGHT: (C)1987,JPO&Japio |