Thermoplastic polyurethanes

US7241854B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Norbert Pohlmann · Nortrup, DE
• Andreas Przybilski · Büdelsdorf, DE
• Rolf Steinberger · Schifferstadt, DE

Key dates

• Filing date: Jul 30, 2002
• Grant date: Jul 10, 2007
• Expiry date: May 5, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2250/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Thermoplastic polyurethanes are obtainable by reacting (a) isocyanates with (b1) polyesterdiols having a melting point greater than 150° C., (b2) polyetherdiols and/or polyesterdiols, each having a melting point of less than 150° C. and a molecular weight of from 501 to 8000 g/mol, and, if required, (c) diols having a molecular weight of from 62 to 500 g/mol.