Dispersions containing a polyurethane and a radiation-hardenable prepolymer

US6335397B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Nicolas Kokel · Alleins, FR
• Klaus Menzel · Berlin, DE
• Wolfgang Reich · Frankenthal (Pfalz), DE

Key dates

• Filing date: Oct 15, 1999
• Grant date: Jan 1, 2002
• Expiry date: Oct 15, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/04
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Aqueous dispersions which are essentially free from protective colloids or emulsifiers, comprise, in dispersed form,A. a polyurethane (A) comprising hydrophilic groups, which bring about the water-dispersibility of the polyurethane, this polyurethane (A) being essentially free from C—C double bonds, andB. a prepolymer having a content of from 0.1 to 1 mol of free-radically polymerizable C—C double bonds per 100 g of prepolymer.