US 6,486,227 B2 · Zinc-complex photoinitiators and applications therefor

Abstract

The present invention is directed to energy-efficient, photoinitiators having the general formula: wherein Z each independently represent wherein R1, R2, R3, R4, R5, R6, R7, R8 are as defined in claim 1, and wherein R9 represents (R10)2O or (R10)3N; wherein R10 represents H or an alkyl group having from one to eight carbon atoms; and wherein R11 represents H, an alkyl group having from one to eight carbon atoms, a benzyl group or an aralkyl group. The present invention is also directed to a method of generating a reactive species, methods of polymerizing polymerizable materials, methods of curing an unsaturated oligomer/monomer mixture, and methods of laminating using the photoinitiators of the present invention. In addition, the present invention is directed to ink compositions, adhesive compositions and resins, and methods of printing using the above-described photoinitiators.

Claims20

Dependent claims

A photoinitiator having the general formula:

wherein Z each independently represents
wherein R1, R2, R3 and R4 each independently represent hydrogen, an alkyl group having from one to six carbon atoms, an alkoxy group having from one to six carbon atoms, or a halogen-substituted alkyl group;
R5, R6, R7 and R8 each independently represent an alkyl group having from one to six carbon atoms, an aryl group, or a halogen-substituted alkyl group having from one to six carbon atoms;
wherein R9 represents (R10)2O or (R10)3N;
wherein R10 represents H or an alkyl group having from one to eight carbon atoms;
and wherein R11, represents H, an alkyl group having from one to eight carbon atoms, a benzyl group or an aralkyl group.

3 more elements

Dependencies are inferred from the claim text.

Zinc-complex photoinitiators and applications therefor

Life of this patent

Zinc-complex photoinitiators and applications therefor

Life of this patent

Abstract

Claims20