Photoinitiators for cationic curing

摘要

The invention relates to modified cationic photoinitiators which exhibit a reduced tendency to crystallize, to a process for reducing the crystallization tendency of cationic photoinitiators, and to the use of the photoinitiators of the invention for the radiation curing of cationically curing compositions. The inventive cationic photoinitiators have the formula (IV):whereR1 is a radicalR2 is a radicalin which Ar is a monovalent aromatic hydrocarbon radical and D being a radicaland the remaining variables are defined herein.