Catalysts

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 18/22 (2006.01) B01J 31/22 (2006.01) B01J 31/38 (2006.01) C08G 18/16 (2006.01) C08L 75/04 (2006.01) C09D 175/04 (2006.01)

Patent

CA 2267773

A catalyst, suitable for use in polyurethane compositions comprises the reaction product of: (a) the reaction product of a titanium, zirconium, hafnium or aluminium orthoester and a .beta.-diketone or .beta.-ketoester and (b) a complexing agent selected from a mercapto compound, an oxazolidine or a tetrahydro-oxazine. The catalyst is particularly useful for preparing coating compositions which have a long pot life and can be cured at room temperature.

Un catalyseur adapté pour être utilisé dans des compositions de polyuréthane comprend le produit de réaction: (a) du produit de réaction d'un orthoester de titane, de zirconium, de hafnium ou d'aluminium et d'une .beta.-bicétone ou d'un .beta.-cétoester et (b) d'un agent complexant sélectionné entre un composé mercapto, une oxazolidine une tétrahydro-oxazine. Le catalyseur est particulièrement utile pour la préparation de compositions de revêtement qui possèdent une propriété de longue durée de vie en pot et qui peuvent être durcies à température ambiante.

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