Cathodic electrocoating composition and process comprising...

Details Cathodic electrocoating composition and process comprising... Cathodic electrocoating composition and process comprising...

C - Chemistry, Metallurgy

25

D

400/5123, 204/97

C25D 13/06 (2006.01) C08G 59/40 (2006.01) C09D 5/44 (2006.01)

Patent

CA 1067639

ABSTRACT A heat-curable electrocoating composition containing a polymer having pendant amine groups and a bis-maleimide crosslinking agent can be electrodeposited onto a cathode substrate disposed within an aqueous electrocoating bath. The amine groups of the polymer are protonated to render the polymer water-dispersible prior to electrodeposition. Upon electrodeposition, the amine groups become de-protonated and cross-link with the bis-maleimide upon heating to form a fully cured electrodeposited coating on the cathode substrate.

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