Soft thermoplastic polyurethane based on the ester of a tricarboxylic acid

US8993690B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Bin-Eric Chen · Shanghai, CN
• Frank Schaefer · Lörrach, DE
• Dirk Kempfert · Dielingen, DE
• Christoph Bahr · Lembruch, DE
• Guenter Scholz · Bohmte, DE
• Teruya Ohkuwa · Suita, JP
• Martin Vallo · Bramsche, DE
• Carsten Guenther · Wagenfeld, DE
• Harald Schulz · Vechta, DE
• Yasuyuki Suzuki · Tokyo, JP
• Tien Kuan Lim · Kapar, MY

Key dates

• Filing date: Apr 26, 2010
• Grant date: Mar 31, 2015
• Expiry date: Sep 29, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/11
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention refers to a thermoplastic polyurethane produced from at least an organic diisocyanate and a compound which is reactive toward isocyanates, wherein the polyurethane comprises the ester of a tricarboxylic acid with at least one alcohol and wherein all acid groups of the tricarboxylic acid are esterified with an alcohol. The invention further refers to a process for producing the respective polyurethane, products comprising this thermoplastic polyurethane and the use of the ester of a tricarboxylic acid as plasticizer in thermoplastic polyurethanes.