Patents by Inventor Peter Scherbel

Peter Scherbel 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).

  • Process for the preparation of isocyanates
    Patent number: 8546605
    Abstract: The invention provides a multistage process for continuously preparing organic, distillable polyisocyanates, preferably diisocyanates, more preferably aliphatic or cycloaliphatic diisocyanates, by reacting the corresponding organic polyamines with carbonic acid derivatives and alcohols to low molecular mass monomeric polyurethanes, and thermally cleaving said polyurethanes, in which at defined reaction stages the polyisocyanates prepared and unusable residues are separated off, and reusable by products and intermediates are recycled to upstream stages.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: October 1, 2013
    Assignee: BASF Aktiengesellschaft
    Inventors: Matthias Kloetzer, Eckhard Stroefer, Volker Krase, Andreas Schmidt, Peter Scherbel
  • Process for the Preparation of Isocyanates
    Publication number: 20080249332
    Abstract: The invention provides a multistage process for continuously preparing organic, distillable polyisocyanates, preferably diisocyanates, more preferably aliphatic or cycloaliphatic diisocyanates, by reacting the corresponding organic polyamines with carbonic acid derivatives and alcohols to low molecular mass monomeric polyurethanes, and thermally cleaving said polyurethanes, in which at defined reaction stages the polyisocyanates prepared and unusable residues are separated off, and reusable by products and intermediates are recycled to upstream stages.
    Type: Application
    Filed: September 5, 2006
    Publication date: October 9, 2008
    Inventors: Matthias Klotzer, Eckhard Stroefer, Volker Krase, Andreas Schmidt, Peter Scherbel