Patents by Inventor Ulrich Schoner

Ulrich Schoner 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).

  • Method of producing organic diurethanes and/or polyurethanes and their use in the production of di and/or polyisocyanates
    Patent number: 6410778
    Abstract: Organic diurethanes and/or polyurethanes are prepared by reacting organic diamines and/or polyamines (a) with urea and/or alkyl cabamates (b) and alcohols (c) in the presence of soluble zirconium compounds, preferably zirconium alkoxides, zirconium acetate or zirconium acetylacetonate, as catalyst (d). They can be used for preparing diisocyanates and/or polyisocyanates by thermal dissociation.
    Type: Grant
    Filed: May 7, 1998
    Date of Patent: June 25, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerhard Laqua, Ulrich Schoner, Andreas Otterbach, Hans Volkmar Schwarz
  • METHOD OF PRODUCING ORGANIC DIURETHANES AND/OR POLYURETHANES AND THEIR USE IN THE PRODUCTION OF DI-AND/OR POLYISOCYANATES
    Publication number: 20010005761
    Abstract: Organic diurethanes and/or polyurethanes are prepared by reacting organic diamines and/or polyamines (a) with urea and/or alkyl cabamates (b) and alcohols (c) in the presence of soluble zirconium compounds, preferably zirconium alkoxides, zirconium acetate or zirconium acetylacetonate, as catalyst (d). They can be used for preparing diisocyanates and/or polyisocyanates by thermal dissociation.
    Type: Application
    Filed: May 7, 1998
    Publication date: June 28, 2001
    Inventors: GERHARD LAQUA, ULRICH SCHONER, ANDREAS OTTERBACH, HANS VOLKMAR SCHWARZ