| abstract |
PURPOSE: A composition usable outdoors without any restrictions, having improved heat resistance and impact resistance, obtained by blending a polyorganosiloxane graft copolymer with an α-methylstyrene-acrylonitrile copolymer. n CONSTITUTION: (A) 100pts.wt. graft copolymer obtained by subjecting 50W99pts. wt. mixture of 60W90wt% aromatic vinyl monomer and 10W14wt% vinyl cyanide to graft polymerization in the presence of 1W50pts.wt. polyorganosiloxane poly mer is blended with (B) 90W40pts.wt. copolymer obtained by copoly-merizing 40W90wt% α-methylstyrene with 10W60wt% acrylonitril. The polyorganosiloxane polymer of the component A is obtained by blending 100pts.wt. organosiloxane with 0.001W10pts.wt. (meth)acryloxysiloxane graft crossing agent shown by the formula (R 1 is H, or methyl; R 2 is H, ethyl, etc.; n is 0, 1, or 2; p is 1W6) and used. n COPYRIGHT: (C)1986,JPO&Japio |