Aqueous resin dispersions

US5919859A · kind A · utility

Assignee

• Huels Aktiengesellschaft · DE

Inventors

• Martina Ortelt · Flein, DE
• Hartwig Lange · Haltern, DE
• Klaus Janischewski · Dorsten, DE

Key dates

• Filing date: Oct 17, 1997
• Grant date: Jul 6, 1999
• Expiry date: Oct 17, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2170/80
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Aqueous resin dispersions obtainable by reaction, or partial reaction, of PA1 I. hydroxyl-containing ketone, ketone/aldehyde and/or urea/aldehyde resins or hydrogenated follow-on products thereof and PA1 II. at least one hydrophilically modified isocyanate and/or polyisocyanate having at least one free NCO group, obtained by reacting at least one isocyanate and/or polyisocyanate with compounds which in addition to the hydrophilic or potentially hydrophilic group have at least one isocyanate-reactive function and which possess a hydrogen which is active according to the Zerewitinoff test, and which also possess at least one hydrophilic group and/or one potentially hydrophilic group, and then combining the neutralized resin with water.