Use as catalyst for forming urethanes, of fluorinated and...

Details Use as catalyst for forming urethanes, of fluorinated and... Use as catalyst for forming urethanes, of fluorinated and...

C - Chemistry, Metallurgy

07

C

C07C 269/02 (2006.01) C08F 4/72 (2006.01)

Patent

CA 2425385

The invention concerns a novel catalyst for forming urethanes. Said catalyst is characterised by the general formula: MY¿3 q?[Z]¿q?, wherein: Z is the radical corresponding to the anion of a super acid whereof the Hamett constant is at least equal to 13 and advantageously more than 13, M representing a trivalent metal, preferably known for forming Lewis acids; Y is an anion or a monovalent anionic function; and q is an integer selected advantageously between 1 and 3, inclusively. The invention is applicable to paint.

L'invention concerne un nouveau catalyseur pour la formation d'uréthanes. Ce catalyseur est caractérisé par la formule générale suivante: MY3-q[Z-]q,où: Z est le radical correspondant à l'anion d'un super acide dont la constante de Hammett est au moins égale à 13 et avantageusement supérieure à 13; M représentant un métal trivalent, de préférence connu pour former des acides de Lewis; Y est un anion ou une fonction anionique monovalente et; q est un entier choisi avantageusement entre 1 et 3, y compris les bornes. Application à la peinture.

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