Patent ID: 6906156

Claim:
A cured composition comprising the reaction product of an energy polymerizable composition comprising a) at least one cationically curable material, b) a two-component initiator system comprising (1) at least one ink of an organometallic complex cation, wherein said cation contains at least one carbon atom bonded to a transition metal atom, and (2) one or more accelerators selected from the group consisting of classes 1, 2, and 3 wherein class 1 compounds are represented by Formula III: wherein each R 1 in Formula III, independently, is hydrogen, chloro, iodo, bromo, hydroxy, fluoro, cyano, nitro, nitroso, formyl, acetyl, benzoyl, trialkylsilyl, and trialkoxysilyl, unsubstituted alkyl, alkenyl, alkynyl, and alkoxy groups containing up to 30 carbon atoms, one to four substituted or unsubstituted aromatic rings wherein two to four rings are fused or unfused, or two R 1 s taken together form at least one ring which is saturated or unsaturated and the ring is substituted or unsubsituted, the compound of formula III having no more than group bonded to the benzene ring; class 2 compounds are represented by Formula IV: wherein each R 2 is the same or different us the other R 2 s and is an unsubstituted alkyl; or two R 2 s taken together form a saturated ring that is substituted or unsubstituted; or two R 2 s are replaced with a double bonded oxygen to form a carbonyl group; and class 3 compounds are represented by Formula V: wherein each R 1 in Formula V, independently, is hydrogen, chloro, iodo, bromo, fluoro, cyano, nitro, nitroso, formyl, acetyl, benzoyl, trialkylsilyl, and trialkoxysilyl, unsubstitued alkyl, alkenyl, alkynyl, and alkoxy groups containing up to 30 carbon atoms, one to four substituted or unsubstitued aromatic rings wherein two to four rings are fused or unfused, or two R 1 s taken together form at least one ring which is saturated or unsaturated and the ring is substituted or unsubstituted; and R 3 is selected from C 1 to C 10 substituted or unsubstituted alkyl groups, or groups of one to four substituted or unsubstituted aromatic rings wherein two to four rings are fused or unfused.