Actinic radiation curable compositions
AssigneeNational Starch and Chemical Corporation
InventorsStephen D. Pastor, Martin M. Skoultchi, Henry R. Hernandez
Life of this patent
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Abstract
Actinic radiation curable compositions comprise chemically bonded portions of at least one free radical polymerizable hydroxyalkyl ester of an alpha, beta unsaturated carboxylic acid, at least one non-halogenated cyclic anhydride, at least one epoxide and a halogenated free radical initiator which is activatable by actinic radiation. Upon exposure to actinic radiation, these compositions are cured with very little or no inhibition by atmospheric oxygen.
Claims9
An actinic radiation curable prepolymeric composition of matter characterized by the presence of terminal unsaturation consisting essentially of the reaction product of:
- (a) from about 1.0 to about 48.0 mole percent of a hydroxyalkyl ester of an alpha, beta unsaturated carboxylic acid, wherein the alkyl group of the ester moiety contains from 2 to 20 carbon atoms, and the acid moiety contains from 3 to 4 carbon atoms;
- (b) from about 1.0 to about 48.0 mole percent of at least one polymerizable free-radical initiator activatable by actinic radiation and selected from the group consisting of tetrachlorophthalic anhydride, tetrabromophthalic anhydride and 1,4,5,6,7,7-hexachloro-5-norbornene-2,3-dicarboxylic anhydride and mixtures thereof;
- (c) from about 1.0 to about 48.0 mole percent of at least one nonhalogenated cyclic anhydride containing from 4 to 10 carbon atoms;
- and
- (d) from about 1.0 to about 48.0 mole percent of at least one epoxide containing 2 to 8 carbon atoms and selected from the group consisting of epoxyalkyl acrylates and methacrylates and alkylene oxides.
Dependencies are inferred from the claim text.