| abstract |
A polymerizable polymeric photoinitiator according to Formula (I): n nwherein:n PL represents an n+m+p-functional polymeric core; n and m independently represent an integer from 1 to 30; p represents an integer from 0 to 10; o is 0 or 1; INI represents a group selected from the group consisting of a benzophenone, a thioxanthone, a carbazole, a anthraquinone, a camphor quinone, an α-hydroxyalkylphenone, an α-aminoalkylphenone, an acylphosphine oxide, a bisacyl phosphine oxide, an acylphosphine sulfide, a phenyl glyoxalate, a benzoin ether, a benzyl ketal, an α-dialkoxyacetophenone, a carbazolyl-O-acyl-oxime, an α-haloarylketone and an α-haloaryl sulfone; L 3 and L 4 represent a substituted or unsubstituted divalent linking group comprising 1 to 14 carbon atoms; A represents a radically polymerizable functional group selected from the group consisting of an acrylate, a methacrylate, a styrene, an acryl amide, a methacryl amide, a maleate, a fumarate, an itaconate, an vinyl ether, an allyl ether, an allyl ester, a maleimide, a vinyl nitrile and a vinyl ester; and R4 represents a substituted or unsubstituted alkyl group. Radiation curable compositions containing the polymerizable polymeric photoinitiator and methods for preparing the polymerizable polymeric photoinitiator are also disclosed. |