Water-dilutable polyurethane dispersions

US7345109B2 · kind B2 · utility

Assignee

• Cytec Surface Specialties Austria GmbH · AT

Inventors

• Markus Schafheutle · Hochheim, DE
• Anton Arzt · Tillmitsch Links der Laßnitz, AT
• Julius Burkl · Graz, AT
• Gudrun Garber · Graz, AT
• Rudolf Jedlicka · Wiener Neustadt, AT
• Gerlinde Petritsch · Graz, AT
• Jörg Wango · Wundschuh, AT
• Renate Pittermann · Gleisdorf, AT

Key dates

• Filing date: Jun 21, 2004
• Grant date: Mar 18, 2008
• Expiry date: Jun 21, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/44
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Water-dilutable polyurethane dispersions comprising structural units derived from polyisocyanates A, polyols B having a number-average molar mass Mn of at least 400 g/mol, compounds D that contain at least two groups reactive towards isocyanate groups and at least one group capable of anion formation, low molar mass polyols E that do not carry any further groups reactive towards isocyanate groups, compounds G that are monofunctional towards isocyanates or contain active hydrogen of different reactivity and that are different from the compounds E, characterised in that the polyols B contain a mass fraction of polycarbonate polyols B1 of at least 85%, and the use thereof in coating compositions