POLYSTYRENE MODIFIED WITH SILICONE RUBBER POWDER A crumb-like silicone rubber powder is uniformly dispersed in a polystyrene polymer using conventional equipment, such as a twin screw extruder, to provide a resin having up to a ten fold improvement in impact strength over the unmodified polymer. The novel silicone rubber powder of the invention is prepared by isolating the particles obtained from a polymerization of an unsaturated monomer in the presence of an aqueous emulsion of a hydroxyl-functional polydiorganosiloxane which has been precured using an organotin curing catalyst and a crosslinker which contains unsaturated functionality.
申请公布号
CA2084534(A1)
申请公布日期
1993.07.01
申请号
CA19922084534
申请日期
1992.12.04
申请人
LILES, DONALD T.;LEE, KENNETH M.;ROMENESKO, DAVID J.;WHITE, JAMES W.
发明人
LILES, DONALD T.;LEE, KENNETH M.;ROMENESKO, DAVID J.;WHITE, JAMES W.