RUBBER-MODIFIED STYRENE RESIN COMPOSITION

摘要

A rubber-modified styrene resin composition is disclosed, in which a soft component comprising an elastomer is dispersed in a resin matrix comprising a sryrene resinin the form of particles, wherein: (1) the soft component particles dispersed in the composition have an average particle size of from 0.2 to 2.6 .mu.m; (2) the soft component has such a particle size distribution as having two maxima, one in the range less than 0.8 .mu.m and the other in the range not less than 0.8 .mu.m; (3) the elastomer is present in an amount of from 5.0 to 10.0% by weight based on the resin composition; and (4) the resin matrix has an intrinsic viscosity ¢?! of at least 0.65. The resin composition exhibits markedly improved impact strength, stiffness and gloss.