Perhydropolysilazane- containing coatings for metal and...

C - Chemistry – Metallurgy – 09 – D

Patent

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Details

C09D 183/16 (2006.01) C04B 41/49 (2006.01) C08K 3/00 (2006.01) C08K 5/00 (2006.01)

Patent

CA 2558512

The invention relates to a surface coating comprises at least one type of perhydropolyzane of formula (1), wherein n is an integer number of a value such that the perhydropolyzane number average molecular weight ranges from 150 to 150,000 g/mol, a solvent and a catalyst and, possibly one or several Co binding agents. The hardened coating has a thickness at least of 1 micrometer, preferably ranging from 2 to 20 micrometers. The inventive coating containing at least one type of perhydropolyzane is suitable for protecting rims, in particular aluminium rims.

L'invention concerne un revêtement pour surfaces, caractérisé en ce qu'il comprend au moins un perhydropolysilazane de formule (I), dans laquelle n désigne un nombre entier et présente une valeur telle que le perhydropolysilazane possède un poids moléculaire moyen en nombre compris entre 150 et 150.000 g/mol, un solvant et un catalyseur et, éventuellement, un ou plusieurs liants Co. Le revêtement durci présente une épaisseur d'au moins 1 micromètre, de préférence, de 2 à 20 micromètres. Il est particulièrement approprié comme revêtement de protection pour jantes, notamment pour jantes en aluminium.

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