Cathodic electrodeposition of polyamine resins using...

Details Cathodic electrodeposition of polyamine resins using... Cathodic electrodeposition of polyamine resins using...

C - Chemistry, Metallurgy

25

D

204/97.1

C25D 13/06 (2006.01) C09D 5/44 (2006.01)

Patent

CA 1074729

ABSTRACT OF THE DISCLOSURE A simplified method for the cathodic electro- deposition of polyamine resin from a dispersion thereof in an aqueous electrocoating bath is provided in which the polyamine is selected to be stably dispersible in water in the form of a salt with a solubilizing acid at a pH of from 6.0-7.5, and this polyamine resin is substantially completely neutralized with carbonic acid and dispersed in water in the form of an amine carbonate or bicarbonate. A unidirectional electrical current is passed through an aqueous electrocoating bath containing the amine carbonate or bicarbonate to deposit the polyamine resin at the cathode and cause the release of carbon dioxide. In preferred prac- tice, a proportion of the amine groups in the polyamine resin within the bath, low enough to maintain the pH of the bath at a pH of about 6.0 or higher, is reacted with a relatively nonvolatile solubilizing acid, and the polyamine resin solids in the electrocoating bath are replenished by adding to the bath polyamine resin substantially completely neutralized with carbonic acid.

288415

Affiliated with

Also associated with

Rating

Cathodic electrodeposition of polyamine resins using... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cathodic electrodeposition of polyamine resins using..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cathodic electrodeposition of polyamine resins using... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-569348