Polyisocyanates as coating components for coating means rich in solids

US6740726B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Jochem Henkelmann · Mannheim, DE
• Heiko Maas · Mannheim, DE
• Gerhard Schulz · Ludwigshafen, DE
• Armin Stamm · Mainz, DE
• Heinz-Peter Rink · Hachenburg, DE
• Werner-Alfons Jung · Ascheberg, DE
• Peter Schwab · Bad Dürkheim, DE

Key dates

• Filing date: Aug 14, 2002
• Grant date: May 25, 2004
• Expiry date: Aug 26, 2022

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J175/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A description is given of polyisocyanates of the formula I in whichR and R′ are identical or different and are alkyl groups having 1-4 carbon atoms andn is on average from 1.5 to 5and also of a process for preparing these polyisocyanates in which a polyamine of the formula II in which R, R′, and n are as defined above, is reacted with phosgene. The new polyisocyanates are suitable for producing crosslinked polyurethanes from reaction mixtures with low solvent content and for producing coating compositions or adhesives. Also described are the coating compositions and adhesives, and their use.