INITIATOR COMPOSITIONS AND METHODS FOR THEIR SYNTHESIS AND USE

摘要

Cationic polymerization initiators of formula (I) are disclosed. The acyl sulfonium salts of the present invention differ from known acyl sulfonium initiators in that the substituents R<2> and R<3> on the sulfur are larger and more complex than the lower alkyl and lower alkylene of known photoinitiators. Processes for the synthesis of the novel acyl sulfonium salts and prepolymer compositions containing them are also disclosed.