Thermal curable powder coating composition

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 18/09 (2006.01) C08G 18/32 (2006.01) C08G 18/79 (2006.01) C09D 175/04 (2006.01)

Patent

CA 2734162

The present invention provides a powder coating composition comprising at least one hydroxyl functional polyuretdione resin binder, wherein the at least one hydroxyl functional polyuretdione resin binder having a melting temperature of 60 to 180°C, in particular, 80 to 160°C. The powder coating composition according to the invention comprising the specific kind of the polyuretdione resin binder makes it possible to provide desired technological properties, in particular, thin films and high flexibility in combination with an excellent weather resistance of the coating layers.

La présente invention porte sur une composition de revêtement pulvérulent comprenant au moins un liant fait de résine polyuretdione à fonctionnalité hydroxyle, le ou les liants faits de résine polyuretdione à fonctionnalité hydroxyle ayant une température de fusion de 60 à 180°C, en particulier, de 80 à 160°C. La composition de revêtement pulvérulent selon l'invention comprenant le type spécifique du liant fait de résine de polyuretdione rend possible de fournir des propriétés technologiques souhaitées, en particulier, des films minces et une flexibilité élevée en combinaison avec une excellente résistance aux intempéries des couches de revêtement.

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