Method for producing thermoplastic polyoxazolidinones

A process for producing thermoplastic polyoxazolidinones, comprising copolymerizing a diisocyanate compound (A) with a diepoxy compound (B) in the presence of a specific quaternary ammonium, quaternary phosphonium and/or quaternary antimony-based catalyst (C), compound (D), compound (F), optionally in a solvent (E), wherein compounds (D) and (F) independently comprise at least one of a monofunctional isocyanate, a monofunctional epoxide, a cyclic carbonate, a monofunctional alcohol, a monofunctional amine, and wherein the diepoxide (B) comprises an epoxide-terminated oxazolidinone-based prepolymer. The invention also relates to the resulting thermoplastic polyoxazolidinones. 一种生产热塑性聚噁唑烷酮的方法，其包括使二异氰酸酯化合物(A)与双环氧化合物(B)在特定的季铵、季鏻和/或季锑基催化剂(C)、化合物(D)、化合物(F)存在下任选在溶剂(E)中共聚，其中化合物(D)和化合物(F)独立地包括单官能异氰酸酯、单官能环氧化物、环状碳酸酯、单官能醇、单官能胺中的至少一种，并且其中双环氧化合物(B)包括环氧化物封端的噁唑烷酮基预聚物。本发明还涉及所得热塑性聚噁唑烷酮。