Cathodic electrodeposition of polyamine resins using carbonic acid neutralization
CA 1074729 A · Owner: Desoto · Inventors: Basoms, John A.; Rabi, Rafat T.; Murphy, Edward J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A simplified method for the cathodic electrodeposition 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 practice, a proportion …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted April 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 1, 1997.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.