Patent ID: 7504441

Claim:
A high gloss, UV curable overprint varnish composition, comprising: A. a liquid Michael addition resin present in amounts up to 99 wt. % based on the total weight of the overprint varnish composition, comprising the uncrosslinked reaction product of, i. a β-dicarbonyl Michael donor, ii. at least one multi-functional acrylate oligomer incorporated with mono-functional acrylate, and iii. at least one amine synergist; and B. at least one of the following, i. a diluent, ii. a photoinitiator, iii. an adhesion promoter, iv. a defoaming agent, and v. a flow and leveling aid, wherein the high gloss overprint varnish composition has a viscosity of less than about 500 centipolse.