| 摘要 |
PURPOSE:To obtain the title composition which can improve the adhesion of topcoating material and the impact strength, etc., of a molding by mixing polypropylene with a specified ethylene copolymer elastomer and a polyolefin modified with an unsaturated carboxylic acid (derivative) in a specified ratio. CONSTITUTION:A polypropylene resin composition is produced by mixing 50-90wt.% polypropylene (A) with 8-35wt.% copolymer elastomer (B) of ethylene with an unsaturated carboxylic acid (e.g. maleic acid) and an alpha,beta-ethylenically unsaturated carboxylic ester (e.g. methyl methacrylate) and 0.2-30wt.% polyolefin (C) modified with an unsaturated carboxylic acid (derivative) (e.g. maleic anhydride-modified polypropylene). As component B, a copolymer elastomer consisting of 5-95wt.% ethylene units, 1-40wt.% unsaturated carboxylic acid units and 4-94wt.% alpha,beta-ethylenically unsaturated carboxylic acid ester units is suitable. |
