Linear oligourethanes and polyurethanes having a defined structure, their preparation and their use

US6465596B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Bernd Bruchmann · Ludwigshafen, DE
• Thomas Servay · Ludwigshafen am Rhein, DE
• Ulrich Treuling · Bensheim, DE

Key dates

• Filing date: May 8, 2000
• Grant date: Oct 15, 2002
• Expiry date: May 8, 2020

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/3271
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

In a process for preparing linear oligourethanes and polyurethanes by reacting 1 mole of a) diisocyanate with 1 mole of b) a compound having two groups which are reactive toward isocyanates, the functional groups of a) and/or b) have differing reactivities toward the functional groups of the other reactant and the reaction conditions are selected so that in each case only particular functional groups of a) and b) react with one another.