Covestro Deutschland Ag

Covestro Intellectual Property Gmbh & Co. Kg

Daniel Thiel

Hans-Josef Laas

Christoph Gürtler

Jan Weikard

Aurel Wolf

Christoph Guertler

Kai Laemmerhold

Sohajl Movahhed

Walter Leitner

Nusret Yuva

Raul Pires

Florian Johannes Stempfle

Thomas Koenig

Stefan Westhues

Carsten Koopmans

Florian Golling

Elena Frick-Delaittre

Irene Cristina Latorre Martinez

Joachim Simon

Yvonne Reimann

Roland Engberg

Min Wang

Ralph-Georg Born

Gudrun Schmidt

Laura Woods

Tuba Fatma Bayram

Sureshbabu Guduguntla

Waldemar Schlundt

Mathias Glassner

Tugrul Nalbantoglu

A process for producing a thermoplastic polyoxazolidinone comprising copolymerizing a diisocyanate compound (A) with a bisepoxide compound (B) in the presence of a specific a quaternary ammonium, quaternary phoshonium and/or quaternary stibonium-based catalyst (C), a compound (D), a compound (F) wherein compound (D) and compound (F) independently comprises at least one of a monofunctional isocyanate, a monofunctional epoxide, a cyclic carbonate, a monofunctional alcohol, a monofunctional amine optionally in a solvent (E), and wherein the process is in the absence of a solvent (G) with a boiling point higher than 200° C., preferably higher than 190° C. and more preferably higher than 180° C. at 1 bar (absolute). The invention is also related to the resulting thermoplastic polyoxazolidinone.

Method for the production of a thermoplastic polyoxazolidinone

A process for producing a thermoplastic polyoxazolidinone comprising copolymerizing a diisocyanate compound (A) with a bisepoxide compound (B) in the presence of a specific a quaternary ammonium, quaternary phoshonium and/or quaternary stibonium-based catalyst (C), a compound (D), a compound (F) wherein compound (D) and compound (F) independently comprises at least one of a monofunctional isocyanate, a monofunctional epoxide, a cyclic carbonate, a monofunctional alcohol, a monofunctional amine optionally in a solvent (E), and wherein the catalyst (C) is added in at least two portions (C-1) and (C-2). The invention is also related to the resulting thermoplastic polyoxazolidinone.

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.

Method for the production of thermoplastic polyoxazolidinone polymers

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Leverkusen, Germany

Daniel Thiel