Bismuth oxide catalyst for cathodic electrocoating compositions

Details Bismuth oxide catalyst for cathodic electrocoating compositions Bismuth oxide catalyst for cathodic electrocoating compositions

C - Chemistry, Metallurgy

09

D

C09D 5/44 (2006.01) C08G 18/58 (2006.01) C08G 18/80 (2006.01) C08G 59/68 (2006.01) C08L 63/00 (2006.01)

Patent

CA 2347426

An improved aqueous cathodic electrocoating composition having a binder of an epoxy-amine adduct and a blocked polyisocyanate cross-linking agent; wherein the improvement is the use of a catalytic amount of bismuth trioxide dispersed in the electrocoating composition.

L'invention concerne une composition aqueuse améliorée pour revêtement électrolytique cathodique comprenant un liant constitué d'un adduit époxy-amine et d'un agent de réticulation de polyisocyanate bloqué. L'amélioration porte sur l'utilisation d'une quantité catalytique de trioxyde de bismuth dispersé dans la composition pour revêtement électrolytique.

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