Weathering-stable, radiation-curable polyurethanes

US6444721B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Reinhold Schwalm · Monsheim, DE
• Frank Vollinger · Edenkoben, DE
• Klaus Menzel · Berlin, DE
• Wolfgang Reich · Frankenthal (Pfalz), DE
• Erich Beck · Ladenburg, DE
• Thomas Jaworek · Kallstadt, DE

Key dates

• Filing date: Jan 3, 2001
• Grant date: Sep 3, 2002
• Expiry date: Feb 9, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/792
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A water-dispersible, radiation-curable polyurethane composed essentially ofa) organic, aliphatic or alicyclic polyisocyanates,b) cycloaliphatic diols and/or cycloaliphatic diamines,c) compounds containing at least one isocyanate-reactive group and at least one free-radically polymerizable unsaturated group,d) compounds containing at least one isocyanate-reactive group and at least one dispersing-active group,e) if desired, compounds containing at least two isocyanate-reactive groups having a molecular weight <1000 g/mol,f) if desired, compounds other than a) to d) containing at least one isocyanate-reactive group.