Water-soluble or water-dispersible polyisocyanate composition, a process for its preparation and its use in coating compositions

US5468804A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Lutz Schmalstieg · Neunburg vorm Wald, DE
• Wolfgang Kremer · Kerken, DE
• Martin Brahm · Siegen, DE
• Joachim Probst · Leverkusen, DE
• Werner Kubitza · Leverkusen, DE

Key dates

• Filing date: Sep 15, 1994
• Grant date: Nov 21, 1995
• Expiry date: Sep 15, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31551
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A water-dispersible polyisocyanate composition obtained by the partial urethanization of the isocyanate groups of 2,4- and/or 2,6-diisocyanatotoluene with monohydric and polyhydric alcohols, a process for its production, its use as the binder for an aqueous two-component coating composition in combination with a water-soluble or water-dispersible polyhydroxyl component and coatings for water-resistant sheet-form substrates prepared from this coating composition.