Catalysts, in particular for the preparation of polyisocyanate polyadducts

US6894139B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Martin Kreyenschmidt · Löhne, DE
• Hauke Malz · Diepholz, DE
• Dieter Rodewald · Bad Essen, DE
• Thomas Flug · Wagenfeld, DE
• Ansgar Frericks

Key dates

• Filing date: Jul 4, 2001
• Grant date: May 17, 2005
• Expiry date: Aug 7, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2290/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Catalysts contain, as structural units, at least one tertiary amino group and at least one group which, after its decomposition, is capable of complexing or protonating the tertiary amino group.