Ternary photoinitiator system for addition polymerization

Details Ternary photoinitiator system for addition polymerization Ternary photoinitiator system for addition polymerization

C - Chemistry, Metallurgy

08

F

117/207, 204/96,

C08F 2/50 (2006.01) C09D 5/32 (2006.01) G03F 7/029 (2006.01)

Patent

CA 1326579

ABSTRACT OF THE DISCLOSURE This invention relates to photoinitiator systems for use in addition, i.e., free radically-initiated, polymerization. This invention porvides photopolymerizable compositions comprising: (1) at least one vinyl monomer capable of undergoing free radical polymerization, (2) a visible light or ultraviolet light responsive photoinitiator system comprising: a) a diarylidonium salt, b) a pigment, insoluble in the photopolymerizable composition, said pigment also serving as a sensitizer, c) one or more electron donating compounds, and, optionally, (3) adjuvants. 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.

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