Patents by Inventor Wolfgang Fleige

Wolfgang Fleige 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).

  • Low-halogen-content, thermoplastic polyurethane elastomer having improved flame resistance by the addition of a 4-component additive combination, its production and its use
    Patent number: 4397974
    Abstract: The present invention relates to low-halogen-content, thermoplastically-processible polyurethane elastomers (TPU), to which are added antimony trioxide, chlorinated and/or brominated aromatic compounds having a specified halogen content, aluminum hydroxide having a specified particle size, phosphoric acid tris-ester, and, optionally, quaternary tetra-alkyl ammonium salts. These additives impart an unexpectedly favorable combination of electrical surface properties, flameproof behavior and abrasion resistance.
    Type: Grant
    Filed: March 29, 1982
    Date of Patent: August 9, 1983
    Assignee: Bayer Aktiengesellschaft
    Inventors: Wilhelm Goyert, Wolfgang Fleige, Hans-Georg Hoppe, Hans Wagner