Aqueous polyurethane dispersions containing structural units derived from alkenyl- or alkylsuccinic acid

US5852104A · kind A · utility

Assignee

• BASF SE

Inventors

• Nicholas Kokel · Ludwigshafen, DE
• Karl Haberle · Speyer, DE
• Kuno Beutler · Lambsheim, DE
• Jurgen Reichert · Schifferstadt, DE
• Peter Weyland
• Gabriele Dralle-Voss · Darmstadt, DE
• Knut Oppenlander · Ludwigshafen, DE
• Michael Zirnstein · Schriesheim, DE
• Gerlinde Tischer · Ruhland, DE
• Bernd Guettes · Sallgast, DE
• Ulrike Licht · Mannheim, DE

Key dates

• Filing date: Jan 27, 1997
• Grant date: Dec 22, 1998
• Expiry date: Jan 27, 2017

Classification

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

Abstract

Aqueous dispersions containing a polyurethane built up from PA1 a) diisocyanates having 4 to 30 carbon atoms, PA1 b) diols, of which PA2 b.1) from 10 to 100 mol %, based on the total amount of the diols (b), have a molecular weight of from 500 to 5000 and are built up from PA3 b1.1) (C.sub.4 - to C.sub.30 -alkyl)succinic acid and/or (C.sub.4 - to C.sub.30 -alkenyl)succinic acid, PA3 b1.2) from 0 to 60 mol %, based on component (b1.1), of a dicarboxylic acid which is different from component (b1.1), and PA3 b1.3) a diol having a molecular weight of from 60 to 500 g/mol, PA2 b.2) from 0 to 90 mol %, based on the total amount of the diols (b), have a molecular weight of from 60 to 500 g/mol, and PA2 b.3) from 0 to 90 mol %, based on the total amount of the diols (b), have a molecular weight of from 500 to 5000 g/mol and are different from (b1), PA1 c) monomers which are different from the monomers (a) and (b) and contain at least 2 isocyanate groups or at least 2 isocyanate-reactive groups and which in addition carry at least one hydrophilic group or a potentially hydrophilic group, thus achieving the water-dispersibility of polyurethanes, PA1 d) if desired, further polyfunctional com…