| 摘要 |
PURPOSE:A resin composition that contains a specific ethylene-propylene block copolymer and an ethylene-propylene elastic copolymer at a specific ratio, thus giving moldings showing good coating properties with no special pretreatment. CONSTITUTION:The composition contains (A) 67-91wt% of an ethylene-propylene thermoplastic, nonelastic block copolymer and (B) 33-9wt% of an ethylene- propylene elastic copolymer with a Mooney viscosity of 18-34ML1+4 (100 deg.C). The component A is of less than 20% ethylene unit and has a melt index of 1.8- 10g/10min. The content of propylene in the component B is 20-50, preferably 20-35%. EFFECT:The flowability is good on molding and the composition gives moldings with high mechanical strength. |
