| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject composition capable of imparting impact resistance, having a low mold shrinkage and a high fluidity by including an acrylic multi layer structural polymer and an acrylic polymer having a weight-average molecular weight within the specific range. SOLUTION: This composition comprises (A) 5-45 wt.% acrylic multi layer structural polymer having at least one layer of the inner layer comprising a crosslinked elastomer layer consisting essentially of a unit of a 1-8C alkyl ester of acrylic acid and/or a dienic monomeric unit, and having a thermoplastic resin layer consisting essentially of the unit of the 1-8C alkyl ester of the methacrylic acid at the most outside layer, (B) 45-95 wt.% methacrylic polymer having a weight-average molecular weight of 1×10<4> -10×10<4> and (C) 0-50 wt.% methacrylic polymer having >=10×10<4> weight-average molecular. Further, the component B and the component C are copolymers consisting of 80-100 wt.% methyl methacrylate unit and 20-0 wt.% other copolymerizable vinylic monomer. |
