Polyfunctional peroxides, vinyl monomer polymerization initiators comprising the same and process for polymerization vinyl monomers employing the same

摘要

The novel polyfunctional peroxides are compounds represented by the following general formula (1):PPR.sup.1 -CX.sub.3 ( 1) PPwherein R.sup.1 represents a linear alkyl group having 1 to 3 carbon atoms; and X represents a group: ##STR1## (wherein R. sup.2 represents a linear or branched alkyl group having 1 to 5 carbon atoms). Such polyfunctional peroxides include 1,1,1- tris(t- butylperoxycarbonyloxymethyl)propane and the like. The polymerization initiators for vinyl monomers comprise such polyfunctional peroxides. In the process for polymerizing vinyl monomers, a vinyl monomer is polymerized employing such polyfunctional peroxide at 60 to 160° C.