Homopolymerization of acrylate or methacrylate endblocked polydiorganosiloxanes

摘要

Method for homopolymerization of polyorganosiloxane macromonomers having acryloxy or methacryloxy groups. A miniemulsion of a methacryloxy functional polydimethylsiloxane macromonomer is prepared herein by mixing the macromonomer with a surfactant(s) and then subjecting it to a high shear device. The macromonomer is polymerized in the miniemulsion by using a free radical initiator at high temperature. The amount of unreacted macromonomer is very low.