| abstract |
Photopolymerizable compositions comprising: n (1) at least one vinyl monomer capable of undergoing free radical polymerization, n (2) a visible light or ultraviolet light responsive photoinitiator system comprising: n (a) a diaryliodonium salt, n (b) a pigment, insoluble in the photopolymerizable composition, said pigment also serving as a sensitizer, n (c) one or more electron donating compounds, and, optionally, n (3) adjuvants. n The three component photoinitiator system of this invention can increase, by several orders of magnitude, the rate of ultraviolet light or visible light photocuring of vinyl monomers. |