Patents by Inventor Elena Rojo-Wiechel

Elena Rojo-Wiechel 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 PRODUCING POLYOXYALKYLENE-POLYOL MIXTURES
    Publication number: 20220220304
    Abstract: The present invention relates to a process for direct production of mixtures of short-chain high-functionality polyoxyalkylene polyols and long-chain low-functionality polyoxyalkylene polyols. The short-chain high-functionality polyoxyalkylene polyol component is obtained by alkylene oxide addition onto high-functionality H-functional starter compounds while the long-chain low-functionality polyoxyalkylene polyol component is correspondingly obtained by alkylene oxide addition onto low-functionality H-functional starter compounds. The invention further relates to the resulting polyoxyalkylene polyols and to the reaction thereof to produce polyurethanes.
    Type: Application
    Filed: May 19, 2020
    Publication date: July 14, 2022
    Inventors: Klaus Lorenz, Elena Rojo-Wiechel, Elena Frick-Delaittre, Martin Marazita, Reinhard Albers