Heat curable aqueous lacquer coating composition, its use for electrical deposition, and a process of cathodic deposition onto an electrical conductive substrate

US4454264A · kind A · utility

Assignee

• Herberts Gesellschaft mit beschrankter Haftung · DE

Inventors

• Hans-Peter Patzschke · Wuppertal, DE
• Armin Gobel · Syke, DE

Key dates

• Filing date: Jul 2, 1981
• Grant date: Jun 12, 1984
• Expiry date: Jul 2, 2001

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S524/901
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Paint coating material capable of cathodic deposition based on a vehicle mixture that has been made water-thinnable with acid and optionally customary additives, wherein said vehicle contains in combination PA1 (A) from 50 to 90% by weight of a polymer and/or polycondensate containing tertiary amino-groups and OH groups and having amine and hydroxy numbers of from 30 to 170 and 30 to 300 respectively; PA1 (B) from 5 to 40% by weight of a fully blocked polyisocyanate which is stable in the aqueous phase and becomes reactive again under the influence of heat, after dissociation of the blocking group; and PA1 (C) from 0 to 30% by weight of polymer and/or polycondensate containing primary and/or secondary OH- and/or amino-groups.