1,4 or 9,10 dimethoxyanthracene triggers for 2-tri(chloro or bromo)methyl-4(1H)-quinazolimone polymerization initiators

摘要

A photopolymerization initiator composition is disclosed. The composition is comprised of 1,4 or 9,10 dimethoxyanthracene and 2-tri(chloro or bromo)methyl-4(1H)-quinazolinone. The initiator composition is useful in preparing photopolymerizable compositions having increased effective photospeed.