RUBBER-MODIFIED STYRENE RESIN MOLDED ARTICLE

摘要

PROBLEM TO BE SOLVED: To provide excellent face impact resistance by constituting the surface layer part with a rubber-modified styrene resin compsn. contg. a specified ingredient A, B or C and the other layer with a specified ingredient D. SOLUTION: This molded article consists of a surface layer part 1 of a rubber-modified styrene resin compsn. contg. an ingredient A, B or C and an inner layer part 2 of an ingredient D. The ingredient A contains 10-35wt.% flexible ingredient particles with a mean particle diameter of 0.1-0.5μm and the flexible ingredient particles is 100 pts.wt. rubber-modified styrene resin which has a single occlusion structure constituted of nucleus parts consisting of a rubbery polymer enveloping nucleus parts being a single continuous phase of a styrene resin alone and the ingredient B consists of 0.1-10 pts.wt. polymer with a solubility parameter 8.45-8.70 and contg. no arom. vinyl compd. in the polymer. The ingredient C consists of 0.1-10 pts.wt. fine particles with a mean particle diameter of 0.1-5μm and with a glass transition temp. which does not exist in the range of -130-90 deg.C. The ingredient D consists of a rubber-modified styrene resin contg. 10-40wt.% flexible ingredient particles with a mean particle diameter 0.1-2.5μm.