Process for coating electrically conductive substrates, an aqueous coating composition, process for the preparation of an adduct containing urethane groups and an adduct containing urethane groups

US5693205A · kind A · utility

Assignee

• Basf Lacke & Farben Aktiengesellschaft · DE

Inventors

• David J. Santure · Novi, US
• Gunther Ott · Hachenburg, DE
• Udo Reiter · Telgte, DE
• Ulrich Heimann · Munster, DE
• Hans-Josef Oslowski · Munster, DE

Key dates

• Filing date: Jan 24, 1992
• Grant date: Dec 2, 1997
• Expiry date: Jan 24, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D5/4492
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a cathodic electro-dipping process, which comprises a procedure in which the electro-dipping primer used contains an adduct containing urethane groups which is obtainable by reacting with one another a polyester-polyol or polyether-polyol, a polyisocyanate and a compound which contains a hydroxyl group and at least one ketimine group in the molecule.