Patents by Inventor Stefan Werda

Stefan Werda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • PROCESS FOR PREPARING A POLYOXYALKYLENE CARBONATE POLYOL
    Publication number: 20230174705
    Abstract: The invention relates to a process for preparing a polyoxyalkylene carbonate polyol by reacting a polyoxyalkylene polyol with a cyclic carbonate in the presence of an amine catalyst. The invention further relates to polyoxyalkylene carbonate polyols obtainable using the method according to the invention and to a process for preparing polyurethanes by reacting the polyoxyalkylene carbonate polyols according to the invention with polyisocyanates.
    Type: Application
    Filed: March 26, 2021
    Publication date: June 8, 2023
    Inventors: Elisabeth Vogelsang, Joerg Hofmann, Klaus Lorenz, Philipp Sander, Stefan Werda, Mike Schuetze