Process for the synthesis of polyoxazolidinone compounds

US11326018B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Anna WEBER · Cologne, DE
• Claudine Rangheard · Munich, DE
• Michael Richard Kessler · Urbana, US
• Walter Leitner · Aachen, DE
• Christoph Gürtler · Cologne, DE
• Carsten Koopmans · Hilden, DE
• Thomas Ernst Müller · Aachen, DE

Key dates

• Filing date: Aug 16, 2017
• Grant date: May 10, 2022
• Expiry date: Feb 11, 2039

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01F6/96
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A method for the production of polyoxazolidinone compounds, comprising the step of reacting an isocyanate compound (A) with an epoxide compound (B) in the presence of a catalyst (C), wherein the isocyanate compound (A) comprises a isocyanate compound (A1) wherein the a isocyanate compound (A1) comprising at least two isocyanate groups (I1≥2), preferred two isocyanate groups (I1=2), wherein the epoxide compound (B) comprises a epoxide compound (B1) and an epoxide compound (B2), wherein the epoxide compound (B2) is different from the epoxide compound (B1) wherein the epoxide compound (B1) comprising at least two terminal epoxide groups (F1≥2), preferred two terminal epoxide groups (F1=2), linked together by a linking group (L1) and the epoxide compound (B2) comprising at least two terminal epoxide groups (F2≥2)), preferred two terminal epoxide groups (F2=2), linked together by a linking group (L2), wherein the linking group (L2) comprises acyclic and covalent bonds to each other free of conjugated multiple bonds within the main chain, wherein the epoxide compound (B2) is present in the epoxide compounds B1 and B2, in an amount of ≥0.01 mol-% to <10 mol-%, preferred 1-9 mol-% more pre…