Hard transparent thermoplastic polyurethane

US11414543B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Zeljko Tomovic · Bohmte, DE
• Sebastian Richter · Esslingen am Neckar, DE
• Frank Schaefer · Lörrach, DE

Key dates

• Filing date: Dec 22, 2017
• Grant date: Aug 16, 2022
• Expiry date: Dec 22, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2203/20
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a thermoplastic polyurethane obtainable or obtained by converting a polyisocyanate composition, a one chain extender, and a polyol composition, wherein the polyol composition comprises a polyol (P1) which has a molecular weight Mw in the range from 500 to 2000 g/mol and has at least one aromatic polyester block (B1), wherein the hard segment content in the thermoplastic polyurethane is <75%. The present invention further relates to a process for producing a shaped body comprising such a thermoplastic polyurethane, and to shaped bodies obtainable or obtained by a process of the invention.