Patent ID: 8399533

Claim:
A photocurable composition comprising: at least one N-oxyazinium salt photoinitiator, a photosensitizer for the N-oxyazinium salt photoinitiator, an N-oxyazinium salt efficiency amplifier, and one or more photocurable acrylates, wherein the N-oxyazinium salt efficiency amplifier is an organic phosphite having the formula: (R′O) 3 P wherein the multiple R′ groups are the same or different alkyl groups or HO[{CH(R)} x O] y groups wherein the multiple R groups are the same or different hydrogen atoms or alkyl groups, or two R′ groups can form a cyclic aliphatic ring or fused ring system, x is a number at least 2 and up to and including 20, and y is at least 1 and up to and including 20.