Patent ID: 8119740

Claim:
An acryloyl group containing resin composition Michael addition reaction product of (a) at least one Michael addition acceptor compound having only one vinyl group selected from acrylic esters (acrylates), alkyl vinyl ketones, acrolein, acrylonitrile, acrylamides or vinylsulfonates, and (b) at least one multifunctional acrylic ester, with (c) at least one β-dicarbonyl group containing compound or resin, in which the β-dicarbonyl group has two activated hydrogen atoms in its methylene position, wherein the equivalent ratio of the vinyl group of the vinyl compound (a) to the activated hydrogen atom of the compound or resin (c) is in the range from 0.01:1 to 0.9:1 and the equivalent ratio of all unsaturated groups from both vinyl compound (a) and multifunctional acrylic ester (b) to the activated hydrogen atom of the compound or resin (c) is >1.05:1, and wherein the resin composition is a curable liquid.