Darby & Darby
Rubber-modified styrenic resin composition
 A rubber-modified styrenic resin composition obtained by graft-polymerizing a styrenic monomer dissolving a rubber-like polymer, wherein PA1 (1) the rubber-like polymer is dispersed in a styrenic polymer matrix in the form of particles having a volume average particle diameter falling in the range of 0.5 to 1.6 .mu.m, PA1 (2) the dispersed particles of said rubber-like polymer are of a salami structure in which a part of the styrenic polymer having a number average particle diameter falling in the range of 0.13 .mu.m or more and up to 0.20 .mu.m and a particle diameter distribution falling in the range of 1.15 to 1.35 is dispersed and included in the rubber-like polymer particles, and PA1 (3) the dispersed particles of said rubber-like polymer have a swelling ratio falling in the range of 7 to 12 in toluene. The rubber-modified styrenic resin composition of the present invention is excellent in mechanical strength, a gloss and a coloring property and has a good balance between them. 
Nippon Steel Chemical Co., Ltd
C C C
C08F C08L C08F
inventional inventional inventional
Masanari Yasuji Masayuki
Fujita Shichijo Nozawa