Patents by Inventor Helmut Brehn

Helmut Brehn 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).

  • Liquid or flowable derivatives of natural fats and oils a process for their production and their use
    Patent number: 5391784
    Abstract: The present invention relates to derivatives of natural fats and oils that are liquid or flowable, respectively, and to a process for the production of said derivatives, in which oxalkylation is carried out at elevated temperatures in the presence of basic catalysts with at least one compound containing an epoxide group, and sulfation is carried out in a manner known per se, in which a starting material containingA) at least one C.sub.8 -C.sub.24 -fatty acid ester of an aliphatic C.sub.1 -C.sub.5 -monoalcoholThe present invention furthermore relates to the use of said derivatives, optionally in combination with other greasing substances and anionic and/or non-ionic emulsifiers, for the fatliquoring and greasing of leather.
    Type: Grant
    Filed: December 6, 1993
    Date of Patent: February 21, 1995
    Assignee: Chemische Fabrik Stockhausen GmbH
    Inventors: Helmut Brehn, Helmut Klimmek, Leonhard Strijbos