METHOD FOR THE PRODUCTION OF THERMOPLASTIC POLYOXAZOLIDINONES

• Main Authors: Wolf, Aurel, Guertler, Christoph, Laemmerhold, Kai, Frick-Delaittre, Elena, Thiel, Daniel, Westhues, Stefan, Koopmans, Carsten, Koenig, Thomas, Movahhed, Sohajl
• Format: Patent
• Language: English
• Published: 11.01.2024
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

A process for producing thermoplastic polyoxazolidinones is provided. The process comprises copolymerization of a diisocyanate compound with a bisepoxide compound in the presence of a catalyst and a compound, wherein the compound is one or more compounds selected from the group consisting of monofunctional isocyanate, monofunctional epoxide, cyclic carbonate, monofunctional alcohol, monofunctional amine preferred monofunctional epoxide, wherein the process is performed at reaction temperatures of ≥178° C. to ≤230° C., wherein the bisepoxide compound (B) comprises 2,4′-isopropylidenediphenol diglycidyl ether (2,4′ BADGE) and 4,4′-isopropylidenediphenol diglycidyl ether (4,4′ BADGE); and wherein the molar ratio of 2,4′-isopropylidenediphenol diglycidyl ether (2,4′ BADGE) is from ≥3 mol-% to ≤11 mol-% related to the sum of 2,4′-isopropylidenediphenol diglycidyl ether (2,4′ BADGE) and 4,4′-isopropylidenediphenol diglycidyl ether (4,4′ BADGE). A resulting thermoplastic polyoxazolidinone is also provided.