Patents by Inventor Warzecha Andreas

Warzecha Andreas 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 FOR PRODUCING ISOCYANATES
    Publication number: 20090275775
    Abstract: The invention relates to a multistage process for the continuous preparation of organic, distillable isocyanates, preferably diisocyanates, particularly preferably aliphatic or cycloaliphatic diisocyanates, by reaction of the corresponding organic amines with urea and alcohols to liberate ammonia and form low molecular weight monomeric urethanes and thermal dissociation of the latter, in which by-products formed are at least partly utilized.
    Type: Application
    Filed: August 8, 2007
    Publication date: November 5, 2009
    Applicant: BASF SE
    Inventors: Matthias Kloetzer, Heinrich-Josef Blankertz, Gunter Georgi, Eckhard Stroefer, Volker Krase, Gerhard Schulz, Warzecha Andreas