Tin catalyst produced from tin oxide and a dicarbonyl...

C - Chemistry – Metallurgy – 07 – F

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402/17, 400/7219

C07F 7/22 (2006.01) C08G 77/06 (2006.01) C08K 5/57 (2006.01)

Patent

CA 1309103

BREVET D'INVENTION CATALYSEUR A L'ETAIN OBTENU A PARTIR D'OXYDE D'ETAIN ET DE COMPOSE .beta.-DICARBONLYE POUR COMPOSITION ELASTOMERE SILICONE Société dite : RHONE-POULENC CHIMIE Inventeurs : Jacques CAVEZZAN Jean-Marc FRANCES Claude MILLET ABREGE DU CONTENU TECHNIQUE DE L'INVENTION La présente invention concerne un mono-chelate d'étain de valence IV pentacoordiné, son procédé de préparation par réaction d'un oxyde d'étain, d'un compose .beta.-dicarbonyle et d'un acide organique ou minéral avecélimination de l'eau formée. Le mono-chelate ou le mélange réactionnel le contenant est utilisable comme catalyseur de réticulation d'une composition organopolysiloxane durcissant par des réactions de polycondensation et comportant une huile .alpha.,.omega.-dihydroxypolydlorganopolysiloxane, un agent réticulant, et éventuellement des charges minérales et un agent d'adhérence.

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