Compositions which undergo light-induced cationic curing and their use
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United States of America Patent
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Jul 4, 2000
Grant Date -
N/A
app pub date -
Aug 21, 1998
filing date -
Aug 21, 1997
priority date (Note) -
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Abstract
The invention relates to compositions which undergo cationic curing with visible light, comprising: (a) 0.01 to 8 wt. % of at least one diaryliodonium compound, (b) 0.01 to 8 wt. % of at least one .alpha.-dicarbonyl compound, (c) 10.0 to 99.9 wt. % of at least one compound containing epoxide groups and/or oxetane groups, (d) 0 to 85 wt. % of modifiers, such as fillers, dyestuffs, pigments, flow improvers, thixotropic agents, polymeric thickeners, additives having an oxidizing action, stabilizers and retardants, characterized in that they additionally comprise (e) 0.001 to 5 wt. % of at least one aromatic amine. The compositions have a low intrinsic color, cure with little smell and, after curing, give compositions with very good mechanical properties.
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