Patent ID: 6031050
Filing Date: 2000-02-29
Classification: C08F,C08L

Abstract:
to 96% by weight of a styrenic polymer and 20 to 4% by weight of a rubber, said composition obtained by graft-polymerizing a styrenic monomer dissolving the rubber, wherein(1) the rubber is selected from the group consisting of polybutadiene, styrene-butadiene copolymers, polyisoprene, butadiene-styrene-isoprene copolymers, natural rubber, and mixtures thereof, and is dispersed in a styrenic polymer in the form of particles having a volume average particle diameter falling in the range of 0.5 to 1.6 .mu.m,(2) the dispersed particles of the rubber have a swelling ratio falling in the range of 7 to 12 in toluene, wherein the dispersed particles of the rubber are of a salami structure in which a part of the styrenic polymer having a number average particle diameter within the range of .gtoreq.0.15 .mu.m to .ltoreq.0.20 .mu.m and a particle diameter distribution falling in the range of 1.15 to