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
US5438097(A)
申请公布日期
1995.08.01
申请号
US19940183003
申请日期
1994.01.18
申请人
LILES, DONALD T.;LEE, KENNETH M.;ROMENESKO, DAVID J.;WHITE, JAMES W.;MURRAY, DAVID L.
发明人
LILES, DONALD T.;LEE, KENNETH M.;ROMENESKO, DAVID J.;WHITE, JAMES W.;MURRAY, DAVID L.