Powder coatings based on branched oligoesters and triazole...

Details Powder coatings based on branched oligoesters and triazole... Powder coatings based on branched oligoesters and triazole...

C - Chemistry, Metallurgy

09

D

C09D 175/06 (2006.01) C08G 18/42 (2006.01) C08G 18/80 (2006.01) C09D 5/03 (2006.01)

Patent

CA 2344539

The present invention relates to powder coating compositions which can be cured at low temperatures. The powder coating compositions of the invention include a unique combination of a branched oligoester polyol and triazole blocked isocyanate cross-linking agent which when cured results in a coating binder with desirable hardness, flexibility, solvent resistance, corrosion resistance, weatherability and gloss.

Cette invention a trait à des compositions de revêtement en poudre pouvant prendre à basse température. Cette composition renferme une combinaison unique d'un polyol oligo-ester à chaînons et d'un agent de réticulation isocyanate bloqué par du triazol qui, une fois pris, donne lieu à un produit agglutinant de recouvrement présentant les caractéristiques souhaitables de dureté, de souplesse, de brillance et de résistance aux solvants, à la corrosion, ainsi qu'aux intempéries.

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