Platinum complexes and use thereof

Details Platinum complexes and use thereof Platinum complexes and use thereof

C - Chemistry, Metallurgy

07

F

C07F 15/00 (2006.01) B01J 31/02 (2006.01) B01J 31/22 (2006.01) B01J 31/28 (2006.01) C07F 7/18 (2006.01) C08G 77/08 (2006.01) C08G 77/398 (2006.01)

Patent

CA 2058730

Method for preparing a platinum-organosiloxane complex which comprises reacting a platinous halide with an organo-siloxane having from 2 to 4 silicon-bonded organic groups containing terminal olefinic unsaturation, the reaction being carried out in the presence of a polar organic liquid, for example dimethylformamide or butan-2-one, which is at least a partial solvent for the platinous halide. The complexes are useful as catalysts for hydrosilylation reactions.

Méthode pour préparer un complexe de platine et d'organosiloxane, consistant à faire réagir un halogénure de platine avec un organosiloxane renfermant 2 à 4 groupes organiques liés au silicium et comportant une insaturation oléfinique terminale; la réaction se fait en présence d'un liquide organique polaire, par exemple le diméthylformamide ou la butan-2-one, qui est un solvant au moins partiel pour l'halogénure de platine. Les complexes sont utiles comme catalyseurs pour les réactions d'hydrosilylation.

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