Ternary photoinitiator system for addition polymerization
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United States of America Patent
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Dec 26, 1989
Grant Date -
N/A
app pub date -
Dec 9, 1987
filing date -
Dec 9, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Photopolymerizable compositions comprising: (1) at least one vinyl monomr capable of undergoing free radical polymerization, (2) a visible light or ultraviolet light responsive photoinitiator system comprising: (a) a diaryliodonium 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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