Wood or wood product coated with an aqueous, air-drying coating agent

US5089342A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Rolf Dhein · Krefeld, DE
• Thomas Scholl · New Haven, US
• Wolfgang Wellner · Bensberg, DE
• Lothar Backer · Gräfenhainichen, DE

Key dates

• Filing date: Feb 8, 1991
• Grant date: Feb 18, 1992
• Expiry date: Feb 8, 2011

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31906
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

An improved aqueous coating agent for providing a decorative and protective coating for wood or wood products contains as a binder polyacrylate resins having chemically incorporated therein air-drying, unsaturated fatty acid moieties and quaternary ammonium moieties, and said agent is prepared by reacting PA0 A) excess polyacrylates containing epoxide groups and having an epoxide group equivalent weight of 200 to 1,300 with PA0 B) drying fatty acids, in an addition reaction with ester formation, PA0 C) reacting at least some of the remaining epoxide groups in the A)-B) reaction product with monoamine ammonium salts which contain an N-H bond in an addition reaction, and PA0 dissolving the reaction product obtained from step C) and containing quaternary ammonium groups in water.