Process for producing polyisocyanates containing biuret groups from (cyclo)aliphatic diisocyanates

US6414184B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Bernd Bruchmann · Ludwigshafen, DE
• Martin Reif · Lichtenfels, DE
• Werner Hofscheuer · Schifferstadt, DE
• Joachim Jähme · Frankenthal (Pfalz), DE
• Werner Langer · Ludwigshafen, DE
• Hans Renz · Meckenheim, DE
• Gunter Mohrhardt · Speyer, DE
• Michael Schiessl · Altrip, DE

Key dates

• Filing date: Feb 10, 1999
• Grant date: Jul 2, 2002
• Expiry date: Feb 10, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2110/0025
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing biuret-functional polyisocyanates from at least one aliphatic or cycloaliphatic diisocyanate and from at least one amine or water or a mixture thereof as reactants involves mixing the reactants with one another in a mixing unit having a high shear action.