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专利名称：Polymerization of vinyl monomers from
silanes and siloxanes
发明人：Daniel Graiver,Aaron Quoc Khieu,Binh Thanh
Nguyen
申请号：US08/888595申请日：19970707公开号：US057503A公开日：19980804
摘要：A method in which radical polymerization of a vinyl monomer is initiated by anozonide group attached to a silane or a siloxane polymer. The method is particularlyuseful for preparing organic polymers having a silicone chain end, or for preparing wideranges of silicone/organic polymers and copolymers with varied architecture, i.e., ABAblock copolymers, comb polymers, star polymers, and hyper-branched polymers. In oneembodiment, the method is carried out by simply heating a vinyl monomer in thepresence of a silane containing ozonide functionality. The ozonide silane is obtained byexposing silanes or siloxanes having an alkyl group containing a double bond to ozone.Surprisingly, an ozonide attached to an organosilicon compound was found to be stable,and capable of initiating vinyl polymerization upon heating to moderate temperatures,i.e., about 70° C.
申请人：DOW CORNING CORPORATION
代理人：James L. DeCesare
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