High impact graft copolymers and resin compositions.

摘要

A polyorganosiloxane graft copolymer in which one or more vinyl monomers have been graft-polymerized onto a composite rubber having such a structure that 1 to 10 wt.% of a polyorganosiloxane rubber component and 99 to 90 wt.% of a polyalkyl (meth)acrylate rubber component are tangled with each other so as not to separate, as well as having a gel content of 85% or more and a swelling degree of 3 to 15, both measured with a toluene solvent, and an average particle size of 0.08 to 0.6 mu m. The high impact polyorganosiloxane graft copolymer according to the present invention can give molded products having excellent impact resistance and surface hardness, and besides it can form an excellent resin composition by mixing with a particular resin.