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. 03, 2022
Filed:
Jan. 30, 2018
Covestro Deutschland Ag, Leverkusen, DE;
Thomas Ernst Müller, Aachen, DE;
Christoph Gürtler, Cologne, DE;
Carsten Koopmans, Hilden, DE;
Volker Marker, Burscheid, DE;
Claudine Rangheard, Munich, DE;
Walter Leitner, Aachen, DE;
Covestro Deutschland AG, Leverkusen, DE;
Abstract
Method for the production of polyoxazolidinone compounds, comprising the 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) having a pKb-value of ≤9. The invention is also related to the resulting polyoxazolidinone compounds.