Patent ID: 8637612

Claim:
An epoxy-functional thermosetting composition containing isocyanurate ring(s), comprising the reaction product of: (a) a polyepoxide containing at least two epoxide groups per molecule; (b) a carboxyl functional oligomer comprising the reaction product of an equivalent quantity of: (i) a polyol containing isocyanurate ring(s) comprising the reaction product of a tris (2-hydroxyalkyl) isocyanurate or derivative thereof with a modifier selected from the group consisting of caprolactones, alkylene oxides, glycidyl esters, glycidyl ethers, and mixtures therefor, and (ii) one or more polycarboxylic acids or acid anhydrides thereof; and (c) an unsaturated carboxylic acid; wherein the molar ratio of epoxy functional groups in component (a) to acid functional groups in component (b) is greater than 1.0, and both epoxy and unsaturated groups are present.