Synthetic resin carrying basic nitrogen groups, its preparation, coating materials produced using this resin, and cathodic electrocoating

US4699937A · kind A · utility

Assignee

• BASF Farben Fasern Aktiengesellschaft · DE

Inventors

• Werner Loch · Erpolzheim, DE
• Eberhard Schupp · Schwetzingen, DE
• Rolf Osterloh · Lechenich, DE
• Klaas Ahlers · Munster, DE

Key dates

• Filing date: Dec 12, 1985
• Grant date: Oct 13, 1987
• Expiry date: Dec 12, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G59/56
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A synthetic resin carrying basic nitrogen groups, its preparation, coating materials prepared from this resin, and a process for cathodic electrocoating. This synthetic resin is obtained by reacting PA0 (A) an epoxy resin which PA0 (B) a diketimine of a diprimary amine and, if required, PA0 (C) with a secondary amine, which may additionally contain a tertiary amino group, with a ketimine of a primary monoamine and/or with a ketimine of a primary/tertiary diamine, a diketimine obtained from PA0 (B.sub.1) a ketone and PA0 (B.sub.2) a branched aliphatic diprimary diamine of 5 to 9 carbon atoms and/or PA0 (B.sub.3) one or more diaminodiamides which are obtained by condensation of 2 moles of diamine (B.sub.2) and 1 mole of a dicarboxylic acid being employed as component (B). After protonation with an acid, this synthetic resin is useful as a binder for cathodic electrocoating.