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US 4,071,428 AGranted
Process for electrodeposition of quaternary ammonium salt group-containing resins
AssigneePPG Industries, Inc.
InventorsJoseph F. Bosso, Marco Wismer
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Abstract
A method of cationic electrodeposition employing an aqueous dispersion of a quaternary ammonium salt group-containing resin is disclosed. The resin comprises the reaction product of a polymeric tertiary amine and a 1,2-epoxy-containing material.
Claims10
A method of electrocoating an electrically conductive surface serving as a cathode in an electrical circuit comprising said cathode, an anode and an aqueous dispersion of an electrodepositable composition, wherein the electrodepositable composition comprises the reaction product of:
- 1. a polymeric tertiary amine,
- 2. a 1,2-epoxy-containing material having the structural formula:
- ##STR10## where R.sub.1 is selected from the class consisting of hydrogen and methyl and R.sub.2 is selected from the class consisting of hydrogen, alkyl including cycloalkyl, aryl and substituted alkyl and aryl;
- said reaction being conducted in the presence of acid and/or water to form the quaternary ammonium base group-containing polymer through reaction of the epoxy moieties with the tertiary amine moieties.
1 more element
Dependencies are inferred from the claim text.