On September 29, 2021, Frick-Delaittre, Elena; Westhues, Stefan; Wolf, Aurel; Koopmans, Carsten; Koenig, Thomas; Guertler, Christoph; Laemmerhold, Kai; Thiel, Daniel; Movahhed, Sohajl published a patent.Safety of 2-(Oxiran-2-ylmethyl)isoindoline-1,3-dione The title of the patent was Method for the production of thermoplastic polyoxazolidinones. And the patent contained the following:
The invention relates to a process for producing thermoplastic polyoxazolidinones, comprising copolymerization of a diisocyanate compound (A) with a bisepoxide compound (B) in the presence of a catalyst (C) and a compound (D) optionally in a solvent (E); wherein the compound (D) is one or more compounds selected from the group consisting of monofunctional isocyanate, monofunctional epoxide, cyclic carbonate, monofunctional alc., monofunctional amine, preferred monofunctional epoxide; wherein the process is performed at reaction temperatures of ≥ 178 – ≤ 230°, preferred ≥ 182 – ≤ 220°, more preferred ≥ 188 – ≤ 210°; most preferred ≥ 190 – ≤ 205°; 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 preferable >4 mol-% to <9 mol more preferable >5 mol-% to <8 mol related to the sum of 2,4'-isopropylidenediphenol diglycidyl ether (2,4' BADGE) and 4,4'-isopropylidenediphenol diglycidyl ether (4,4' BADGE). Thermoplastic polyoxazolidinone obtainable by the inventive process is also claimed. The experimental process involved the reaction of 2-(Oxiran-2-ylmethyl)isoindoline-1,3-dione(cas: 5455-98-1).Safety of 2-(Oxiran-2-ylmethyl)isoindoline-1,3-dione
The Article related to thermoplastic polyoxazolidinone polymerization, Chemistry of Synthetic High Polymers: Ring-Opening and Other Polymerizations and other aspects.Safety of 2-(Oxiran-2-ylmethyl)isoindoline-1,3-dione
Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics