US Patent Issued to Covestro Deutschland on Nov. 11 for "Method for the production of a thermoplastic polyoxazolidinone" (German Inventors)

ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,466,913, issued on Nov. 11, was assigned to Covestro Deutschland AG (Leverkusen, Germany).

"Method for the production of a thermoplastic polyoxazolidinone" was invented by Sohajl Movahhed (Cologne, Germany), Stefan Westhues (Leverkusen, Germany), Daniel Thiel (Leverkusen, Germany), Kai Laemmerhold (Odenthal, Germany), Aurel Wolf (Wulfrath, Germany) and Christoph Guertler (Cologne, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "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/...