Aqueous polyurethane dispersions

US5231130A · kind A · utility

Assignee

• BASF SE

Inventors

• Alexander Wallon · Schifferstadt, DE
• Lothar Maempel · Zeven, DE
• Horst Seibert
• Ruediger Fuessl · Neustadt, DE

Key dates

• Filing date: Nov 12, 1992
• Grant date: Jul 27, 1993
• Expiry date: Nov 12, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2666/54
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Aqueous dispersions contain PA0 A) from 96.95 to 45% by weight of a polyurethane, PA0 B) from 3.0 to 50% by weight of a phenol/formaldehyde condensation resin or of an epoxy resin and PA0 C) from 0.05 to 5.0% by weight of an inorganic salt having a solubility of less than 1 g/l in water at 20.degree. C., the percentages by weight being based on the sum of the components A), B) and C).