Method for the production of thermoplastic polyoxazolidinone polymers

US11427671B2 · kind B2 · utility

Assignee

• Covestro Intellectual Property GmbH & Co. KG · DE

Inventors

• Carsten Koopmans · Hilden, DE
• Kai Laemmerhold · Aachen, DE
• Christoph Guertler · Cologne, DE
• Elena Frick-Delaittre · Cologne, DE
• Aurel Wolf · Wülfrath, DE
• Joachim Simon · Grevenbroich, DE
• Min Wang · Helsinki, FI
• Daniel Thiel · Beckingen, DE
• Walter Leitner · Aachen, DE

Key dates

• Filing date: Oct 25, 2019
• Grant date: Aug 30, 2022
• Expiry date: Oct 25, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2340/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for producing thermoplastic polyoxazolidinone, comprising the following steps: (i) Reaction of a diisocyanate compound (A) with a bisepoxide compound (B) in the presence of a catalyst (C) and a compound (D) in a solvent (E) forming an intermediate compound (F) and (ii) Reaction of a compound (G) with the intermediate (F) formed in step (i), wherein the bisepoxide compound (B) comprises isosorbide diglycidylether, wherein compound (D) is one or more compounds selected from the group consisting of monofunctional isocyanate and monofunctional epoxide, and wherein compound (G) is an alkylene oxide. The invention is also related to the resulting thermoplastic polyoxazolidinone.