Aqueous two-component polyurethane coating compositions and a method for their preparation

US5723518A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Lothar Kahl · Bensberg, DE
• Bernd Klinksiek · Bensberg, DE
• Dieter Schleenstein · Odenthal, DE
• Manfred Bock · Leverkusen, DE
• Nusret Yuva · Wermelskirchen, DE

Key dates

• Filing date: Jan 6, 1997
• Grant date: Mar 3, 1998
• Expiry date: Jan 6, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2982
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method is described for the preparation of aqueous coating compositions based on resin binders containing isocyanate-reactive hydrogen atoms and polyisocyanates, by mixing the components with water, wherein the mixture is forced at a pressure of from 1 to 30 MPa through a nozzle of small size in at least one dimension.