The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 10, 2022
Filed:
Aug. 16, 2017
Covestro Deutschland Ag, Leverkusen, DE;
Anna Weber, Cologne, DE;
Claudine Rangheard, Aachen, DE;
Michael Kessler, Cologne, DE;
Walter Leitner, Aachen, DE;
Christoph Gürtler, Cologne, DE;
Carsten Koopmans, Hilden, DE;
Thomas Ernst Müller, Aachen, DE;
Covestro Deutschland AG, Leverkusen, DE;
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 (A) wherein the a isocyanate compound (A1) comprising at least two isocyanate groups (I≥2), preferred two isocyanate groups (I=2), wherein the epoxide compound (B) comprises a epoxide compound (B) and an epoxide compound (B), wherein the epoxide compound (B) is different from the epoxide compound (B) wherein the epoxide compound (B) comprising at least two terminal epoxide groups (F1≥2), preferred two terminal epoxide groups (F=2), linked together by a linking group (L1) and the epoxide compound (B) comprising at least two terminal epoxide groups (F≥2)), preferred two terminal epoxide groups (F=2), linked together by a linking group (L), wherein the linking group (L) comprises acyclic and covalent bonds to each other free of conjugated multiple bonds within the main chain, wherein the epoxide compound (B) is present in the epoxide compounds Band B, in an amount of ≥0.01 mol-% to <10 mol-%, preferred 1-9 mol-% more preferred 3-8 mol-% based on the molar ratio the terminal epoxide groups in the epoxide compound (B) and of the sum of the terminal epoxide groups in the epoxide compound (B) and terminal epoxide groups in the epoxide compound (B).