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US 4,156,035 AGranted
Photocurable epoxy-acrylate compositions
AssigneeW. R. Grace & Co.
InventorsJung-Hsien Tsao, Arthur D. Ketley
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Abstract
This invention relates to radiation curable compositions comprising mixtures of epoxy resin and di- or polyacrylate or methacrylate terminated monomers in combination with a catalyst system comprising a carbonyl type photoinitiator with an aromatic onium salt capable of effecting the cure by release of a Lewis Acid.
Claims11
A composition comprising:
- A. an epoxy resin polymerizable to a higher molecular weight state and containing one or more epoxy functional groups selected from an epoxy monomer, epoxy prepolymer, oxirane containing polymer and mixtures thereof;
- B. a polymerizable monomer containing at least two ##STR10## groups wherein R is H or CH.sub.3 ;
- C. an effective amount of a radiation sensitive aromatic onium salt of a Gp. VIa element capable of effecting the cure of (A) by release of a Lewis Acid catalyst when exposed to radiant energy and
- D. a carbonyl-type photoinitiator.
1 more element
Dependencies are inferred from the claim text.