Cathodic electrocoating compositions containing alkane...

Details Cathodic electrocoating compositions containing alkane... Cathodic electrocoating compositions containing alkane...

C - Chemistry, Metallurgy

09

D

C09D 5/44 (2006.01) C08G 59/50 (2006.01)

Patent

CA 2255999

An improved aqueous cathodic electrocoating composition having a binder of an epoxy-amine adduct which is of an epoxy resin that has been reacted with an amine, and a blocked polyisocyanate cross- linking agent; wherein the improvement is the use of an alkane sulfonic acid as the neutralizing agent for the epoxy amine adduct to provide an electrocoating composition having improved throw power.

Composition cathodique aqueuse améliorée d'électrodéposition contenant un liant sous forme de produit d'addition époxy-amine qui est une résine époxy que l'on a fait réagir avec une amine, et un agent de réticulation polyisocyanate séquencé. L'amélioration consiste en l'utilisation d'un acide alcanesulfonique en tant qu'agent neutralisant du produit d'addition époxy-amine pour fournir une composition d'électrodéposition ayant une portée de dépôt améliorée.

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