On August 9, 2018, Mueller, Thomas Ernst; Guertler, Christoph; Koopmans, Carsten; Marker, Volker; Rangheard, Claudine; Leitner, Walter published a patent.Recommanded Product: 2-(Oxiran-2-ylmethyl)isoindoline-1,3-dione The title of the patent was Method for production of polyoxazolidinone, and spun fiber comprising polyoxazolidinone. And the patent contained the following:
A method for production of polyoxazolidinone compounds comprises reaction of at least one biscarbamate compound (A) with at least one bisepoxide compound (B) in the presence of at least one base (D), at least one Lewis acid catalyst (E), and optionally at least one compound (C), wherein the compound (C) comprising a mono-carbamate group, a mono-isocyanate group and/or a mono-epoxide group, and wherein the base (D) has a pKb value of ≤ 9. The invention also relates to a polyoxazolidinone compound produced according to the method, and a spun fiber comprising the polyoxazolidinone compound Thus, di-Me diphenylmethane-4,4′-dicarbamate (5.62 g, 17.9 mmol) and resorcinol diglycidyl ether (in resin form, Denacol EX 201, 3.65 g, 16.4 mmol) in o-dichlorobenzene (20 mL) were heated to 180° while stirring at 400 rpm, followed by addition of tert-butyliminotri(pyrrolidino)phosphorane (55 μL, 1% mol relative to biscarbamate) and tetraphenylstibonium bromide (0.18 g, 2% mol relative to biscarbamate), stirring for 480 min, adding 4-tert-butylphenyl glycidyl ether (1.5 mL, 6 mmol), o-dichlorobenzene (10 mL) and N-methyl-2-pyrrolidinone (5 mL), and stirring for another 60 min to obtain a polyoxazolidinone (chemoselectivity to oxazolidinone > 98%, 5-oxazolidinone regioisomer content of 50%, and 4-oxazolidinone content of 50%.). The experimental process involved the reaction of 2-(Oxiran-2-ylmethyl)isoindoline-1,3-dione(cas: 5455-98-1).Recommanded Product: 2-(Oxiran-2-ylmethyl)isoindoline-1,3-dione
The Article related to biscarbamate bisepoxide polymerization polyoxazolidinone synthesis fiber, Chemistry of Synthetic High Polymers: Organic Condensation and Step Polymerization and other aspects.Recommanded Product: 2-(Oxiran-2-ylmethyl)isoindoline-1,3-dione
Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics