Patents by Inventor Martin Liebiger

Martin Liebiger 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).

  • Urethanes containing fluorine and polysiloxane, process for their preparation and their use
    Patent number: 4873306
    Abstract: The novel urethanes are composed essentially of fluoroalcohol-isocyanate adducts as the fluoro component and a polysiloxane component, the two components being combined in a structurally specific manner. The novel urethanes are prepared by reacting the fluoroalcohol-isocyanate adducts with the polysiloxane in a molar ratio of 1 to 2:1 at a temperature of 30.degree. to 130.degree. C. The novel urethanes are preferably used for finishing textiles, to which they also impart the property of a soft handle in addition to good hydrophobicity and oleophobicity. They are also suitable for finishing leather, skins and wood.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: October 10, 1989
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Frank Wehowsky, Martin Liebiger