| 摘要 |
PURPOSE:To provide the title copolymer composition excellent in strength, heat resistance, etc., and suitable for automobile exterior furnishings etc., by graft-polymerizing an ethylenically unsaturated silane compound with a specified olefinic block copolymer. CONSTITUTION:Au olefinic block copolymer produced by using a stereoregular polymerization catalyst consists of 4-50 pts.wt. blocks comprising a propylene homopolymer of an MFR <=20g/10min and a JIS K 6301 hardness A <=95, 0-45 pts.wt. blocks comprising a propylene/ethylene binary random copolymer of an ethylene content of 3-20wt.% and 30-90 pts.wt. blocks comprising a propylene/ethylene binary random copolymer of an ethylene content of 20-90wt.%. An ethylenically unsaturated silane compound (e.g., vinyltrimethoxysilane) of the formula is graft-copolymerized with this copolymer to obtain the title copolymer composition. |
