Heat-curable powder coating composition

Details Heat-curable powder coating composition Heat-curable powder coating composition

C - Chemistry, Metallurgy

09

D

C09D 5/03 (2006.01) C09D 5/08 (2006.01)

Patent

CA 2652879

To provide a heat-curable powder coating composition allowing the formation of a coating film having outstanding long-term corrosion resistance, as well as outstanding chipping resistance, flexibility, and adhesion. A heat-curable powder coating composition, characterized by containing a resin having crosslinkable functional groups that are solid at room temperature (A), a curing agent capable of reacting with said crosslinkable functional groups (B), a fibrous filler (C), and heat-expandable resin particles (D).

L'invention concerne une composition de revêtement en poudre thermodurcissable pour former un film de revêtement présentant une résistance à la corrosion à long terme ainsi qu'une résistance à l'écaillage et des propriétés de souplesse et d'adhérence. Ladite composition de revêtement en poudre thermodurcissable est caractérisé en ce qu'elle contient une résine dotée de groupes fonctionnels réticulables qui sont solides à température ambiante (A), un agent de durcissement capable de réagir avec les groupes fonctionnels réticulables (B), une charge fibreuse (C), et des particules de résine thermoexpansible (D).

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