Patents by Inventor Frank Kleinig

Frank Kleinig 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 polyoxyalkylene polyester polyols
    Patent number: 12227614
    Abstract: The present invention relates to a process for preparing polyoxyalkylene polyester polyols by reacting a starter compound having Zerewitinoff-active H atoms, a cyclic dicarboxylic acid anhydride and a fatty acid ester with an alkylene oxide in the presence of a basic catalyst. The invention further relates to polyoxyalkylene polyester polyols resulting from the method and to a preparation method for polyurethanes by reaction of the polyoxyalkylene polyester polyols according to the invention.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: February 18, 2025
    Assignee: Covestro Deutschland AG
    Inventors: Klaus Lorenz, Frank Kleinig
  • PROCESS FOR PREPARING POLYOXYALKYLENE POLYESTER POLYOLS
    Publication number: 20250019486
    Abstract: The invention relates to a process for preparing polyoxyalkylene polyester polyols with calculated OH numbers of 320 mg (KOH)/g to 530 mg (KOH)/g by reacting a starter compound, which contains alcoholic hydroxy groups and/or amine protons, and a fatty acid ester containing an alkylene oxide. The invention further relates to polyoxyalkylene polyester polyols resulting from the method and to a preparation method for polyurethanes by reaction of the polyoxyalkylene polyester polyols according to the invention with polyisocyanates.
    Type: Application
    Filed: September 30, 2022
    Publication date: January 16, 2025
    Inventors: Klaus Lorenz, Frank Kleinig
  • PROCESS FOR PREPARING POLYOXYALKYLENE POLYESTER POLYOLS
    Publication number: 20230002552
    Abstract: The present invention relates to a process for preparing polyoxyalkylene polyester polyols by reacting a starter compound having Zerewitinoff-active H atoms, a cyclic dicarboxylic acid anhydride and a fatty acid ester with an alkylene oxide in the presence of a basic catalyst. The invention further relates to polyoxyalkylene polyester polyols resulting from the method and to a preparation method for polyurethanes by reaction of the polyoxyalkylene polyester polyols according to the invention.
    Type: Application
    Filed: December 14, 2020
    Publication date: January 5, 2023
    Inventors: Klaus Lorenz, Frank Kleinig