Curable alkanolamine-containing epoxy powder coating...

Details Curable alkanolamine-containing epoxy powder coating... Curable alkanolamine-containing epoxy powder coating...

C - Chemistry, Metallurgy

09

D

C09D 163/00 (2006.01) C09D 5/03 (2006.01) C09D 7/12 (2006.01) C23F 13/02 (2006.01)

Patent

CA 2537431

The present invention provides a curable alkanolamine containing epoxy powder coating composition comprising at least one epoxy resin, at least one alkanolamine, a curing agent in an amount effective to cure the coating and optionally at least one zinc borate compound. Further, the present invention provides a method of cathode corrosion protection which includes the steps of subjecting a metal substrate to a mechanical treatment, applying the curable alkanolamine containing epoxy powder coating composition to the surface of the metal substrate, and polarizing the coated material as a cathode. The present invention also relates to a process for making and applying the alkanolamine containing epoxy powder coating compositions of the present invention.

La présente invention concerne une composition de revêtement en poudre époxy contenant un alkonolamine durcissable comprenant au moins une résine époxy, au moins une alkanolamine, un agent de durcissement dans une quantité efficace pour durcir le revêtement et éventuellement au moins un composé de borate de zinc. Par ailleurs, cette invention concerne un procédé de protection contre la corrosion par cathode qui consiste à soumettre un substrat de métal à un traitement mécanique, à appliquer la composition de revêtement en poudre époxy contenant une alkanolamine durcissable sur la surface de ce substrat de métal et à polariser le matériau revêtu sous forme d'une cathode. Cette invention concerne aussi un processus de fabrication et d'application des compositions de revêtement en poudre époxy contenant une alkanolamine de l'invention.

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