| 摘要 |
1364901 Silylalkylene alkyl peroxides UNION CARBIDE CORP 20 Oct 1971 [21 Oct 1970] 48803/71 Headings C3S and C3P Novel silyl alkylene alkyl peroxides of the formula wherein X denotes a hydrolysable functional radical, each R independently denotes H or a monovalent hydrocarbon radical, R<SP>1</SP> denotes alkenylene, cycloalkenylene, alkarylalkylene or aralkylene, R<SP>11</SP> denotes alkyl or aralkyl and n is 0, 1, or 2, are prepared by reacting an alkyl or aralkyl hydroperoxide HOOR<SP>11</SP> with an organosilane containing at least one hydrolysable functional group together with a hydrogen atom capable of abstraction and bonded to an allylic or benzylic carbon atom, in the presence of a solvent and a catalyst comprising a metal salt in combination with an organo-amide, e.g. cuprouschloride in conjunction with benzamide. Examples describe the preparation of 4-[2-(trimethoxysilyl) ethyl]cumyl cumyl peroxide and 4- and 5-[2-(trimethoxysilyl) ethyl]-3- cyclohexenyl cumyl peroxides. Other specified peroxides are triethoxysilylpropenyl cumyl peroxide, vinyl(trimethoxysilyl)propyl peroxide, vinyl (trichlorosilyl)cumyl peroxide, 2-butenyl (triethoxysilyl)isopropyl peroxide, cyclopropenyl (dichlorosilyl) - 4 - methylcyclohexyl peroxide and phenyl(triethoxysilyl)cumyl peroxide. Uses.-Copolymerization with siloxanes, vulcanizing agents for rubbers, as polymerization initiators for olefins and for bonding initiated polymers to glass substrates. In an example (3) methylmethacrylate is polymerized at 250‹ C. using 4 - [2 - (trimethoxysilyl)ethyl]cumyl cumyl peroxide as an initiator. |
