Aqueous dispersions comprising a polyurethane, a polyisocyanate and a tertiary alkanolamine

US5852105A · kind A · utility

Assignee

• BASF SE

Inventors

• Renate Wustefeld · Schifferstadt, DE
• Ulrike Licht · Mannheim, DE

Key dates

• Filing date: Apr 30, 1997
• Grant date: Dec 22, 1998
• Expiry date: Apr 30, 2017

Classification

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

Abstract

Aqueous two-component dispersions comprising a) a polyurethane carrying anionic groups which make the polyurethane dispersible in water (component a), b) from 0.04 to 1.5 mol of NCO groups in the form of a water-emulsifiable polyisocyanate (component b) per kg of component (a), and c) from 0.05 to 40 mol of tertiary amino groups in the form of a tertiary alkanolamine (component c) per mole of NCO groups in the form of component (b).