C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 77/06 (2006.01) A61K 6/10 (2006.01) C07F 7/08 (2006.01) C07F 7/18 (2006.01) C08F 2/50 (2006.01) C08G 77/04 (2006.01) C08G 77/38 (2006.01) C08J 7/18 (2006.01) C08K 5/00 (2006.01) C08K 5/56 (2006.01) C08L 83/04 (2006.01) C09D 183/04 (2006.01) C09J 7/02 (2006.01) C09J 183/04 (2006.01)
Patent
CA 2096228
2096228 9210543 PCTABS00013 Numerous patents teach the use of various complexes of cobalt, rhodium, nickel, palladium, or platinum as catalysts for accelerating the thermally-activated addition reaction (hydrosilation) between a compound containing silicon-bonded hydrogen and a compound containing aliphatic unsaturation. Although platinum complexes and many others are useful as catalysts in processes for accelerating the thermally-activated addition reaction between the compounds containing silicon-bonded hydrogen and compounds containing aliphatic unsaturation, processes for promoting the ultraviolet or visible radiation-activated addition reaction between these compounds are much less common. This invention provides a process for the addition reaction of compounds containing silicon-bonded hydrogen to compounds containing aliphatic unsaturation and compositions suitable for said process. The process is activated by actinic radiation and is conducted in the presence of a platinum complex having one cyclopentadienyl group that is eta-bonded to the platinum atom and three aliphatic groups that are sigma-bonded to the platinum atom and a free-radical photoinitiator that is capable of absorbing actinic radiation such that the hydrosilation reaction is initiated upon exposure to actinic radiation. The invention also provides compositions for use in the aforementioned process.
Boardman Larry D.
Oxman Joel D.
Minnesota Mining And Manufacturing Company
Smart & Biggar
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