Patent ID: 7524565

Claim:
A liquid, uncrosslinked, UV-curable Michael addition product, comprising a reaction product of multifunctional acrylate Michael acceptor and a Type I and/or Typo II photoinitiator-modified β-dicarbonyl Michael donor selected from the group consisting of a. a Michael donor containing a Type I photoactive moiety having the mixed structures b. a Michael donor containing a Type II photoactive moiety having the structure, including isomers where W, X, Y and/or Z are, independent of each other, a halogen, hydrogen, alkyl alkoxy, aryl, amino, alkylamino, nitrile, nitro, sulpho-, or phospho-group; c. a Michael donor containing a Type II photoactive moiety having the structure, including isomers where W, X, Y and/or Z are, independent of each other, a halogen hydrogen, alkyl, alkoxy, aryl, amino, alkylamino, nitrile, nitro, sulpho-, or phospho-group; d. a Michael donor containing a Type II photoactive moiety having the structure, including isomers where W, X, Y and/or Z are, independent of each other, a halogen, hydrogen, alkyl, alkoxy, aryl, amino, alkylamino, nitrile, nitro, sulpho-, or phospho-group, and R is a simple alkyl or aryl group; e. a Michael donor containing a Type II photoactive moiety having the structure, including isomers where W, X, Y and/or Z are, independent of each other, a halogen, hydrogen, alkyl, alkoxy, aryl, amino, alkylamino, nitrile, nitro, sulpho-, or phospho-group; and f. a modified Michael donor containing a Type II photoactive moiety having the structure, including isomers where W, X, Y and/or Z are, independent of each other, a halogen, hydrogen, alkyl, alkoxy, aryl, amino, alkylamino, nitrile, nitro, sulpho-, or phospho-group.