PHOTOPOLYMERIZABLE COMPOSITIONS COMPRISING THIANTHRENIUM SALT CATIONIC PHOTOINITIATORS

摘要

Triarylsulfonium salts of formula I or II are useful as initiators for cationic photopolymerizations: (FI + FII) wherein Ar1 and Ar2 are independently polycyclic aryl, substituted aryl, heteroaryl, substituted heteroaryl, or aryl or heteroaryl, pendant from a polymer chain; and MtXn.macr. is a complex anion selected from PF6.macr., SbF6.macr., AsF6-, GaF6.macr., BF4.macr., (C6F5)4B.macr. and CF3SO3.macr., C9F19SO3.macr. and (CF3SO2)3C.macr..