Reduced yellowing electrodepositable coating composition

Details Reduced yellowing electrodepositable coating composition Reduced yellowing electrodepositable coating composition

C - Chemistry, Metallurgy

09

D

C09D 5/44 (2006.01) C08G 18/00 (2006.01) C08G 18/08 (2006.01) C08G 18/80 (2006.01) C09D 163/00 (2006.01) C25D 13/06 (2006.01)

Patent

CA 2147116

Electrodepositable coating compositions comprising an active hydrogen-containing ionic resin and a curing agent which contains blocked isocyanate groups and oxazolidone groups are disclosed. These coating compositions reduce the tendency of cured electrodeposited films to cause yellowing in subsequently applied topcoat systems. The use of these electrodepositable coating compositions in the process of electrodeposition is also disclosed.

Des compositions de revêtement électrodéposables consistant en une résine ionique contenant de l'hydrogène et en un agent réactif contenant des groupes isocyanates bloqués et des groupes oxazolidines sont divulguées. Ces compositions réduisent la tendance de jaunissement des films électrodéposés durcis de systèmes de couches de finition appliquées subséquemment. L'utilité de ces compositions de revêtement électrodéposables dans l'électrodéposition est également divulguée.

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