Ternary photoinitiator system for addition polymerization
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United States of America Patent
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Sep 25, 1990
Issued Date -
N/A
app pub date -
Nov 22, 1989
filing date -
Dec 9, 1987
priority date (Note) -
Expired
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Abstract
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 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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