Patent · US Active

Method for the production of polyoxazolidinone polymer compounds

US11319398B2 · kind B2 · utility

0Cited by

7References

15Claims

0Family size

Assignee

Covestro Deutschland AG · DE

Inventors

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

Key dates

Filing date	Jan 30, 2018
Grant date	May 3, 2022
Priority date	—
Expiry date	Apr 19, 2039

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G73/06
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.