Composition containing polymerizable entities having oxirane groups and terminal olefinic unsaturation in combination with free-radical and cationic photopolymerizations means
AssigneeThe Dow Chemical Company
InventorsGeorge A. Lee, Richard A. Hickner
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Abstract
Photocurable resin compositions result from a mixture of polymerizable entities containing both terminal olefinic unsaturation and oxirane groups and a bifunctional curing system capable of initiating free radical and cationic polymerization.
Claims7
A photocurable resin composition comprising (A) a partially esterified epoxyester of a terminally unsaturated monocarboxylic acid and a polyepoxide, (B) a curing system consisting essentially of (1) a free radical photoinitiator and (2) a radiation sensitive aromatic onium salt of an element of Group Va or VIIa, said onium salt capable of inducing the cure of (A) by releasing a Lewis acid catalyst when exposed to radiant energy.
Dependencies are inferred from the claim text.