Patents by Inventor Willi Doell

Willi Doell 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 preparing cycloaliphatic amines
    Patent number: 8987517
    Abstract: A process for preparing cycloaliphatic amines by hydrogenating the corresponding aromatic compounds with hydrogen-comprising gas at a temperature of from 30 to 280° C. and a pressure of 50-350 bar, in the presence of ruthenium catalysts. The hydrogenation is performed in the presence of from 1% by weight to 500% by weight, based on the catalyst calculated as elemental ruthenium (Ru), of suspended inorganic additives, and to the use of the cycloaliphatic amines as a synthesis unit.
    Type: Grant
    Filed: January 14, 2009
    Date of Patent: March 24, 2015
    Assignee: BASF SE
    Inventors: Joachim Pfeffinger, Willi Doell
  • PROCESS FOR PREPARING CYCLOALIPHATIC AMINES
    Publication number: 20100292510
    Abstract: A process for preparing cycloaliphatic amines by hydrogenating the corresponding aromatic compounds with hydrogen-comprising gas at a temperature of from 30 to 280° C. and a pressure of 50-350 bar, in the presence of ruthenium catalysts. The hydrogenation is performed in the presence of from 1% by weight to 500% by weight, based on the catalyst calculated as elemental ruthenium (Ru), of suspended inorganic additives, and to the use of the cycloaliphatic amines as a synthesis unit.
    Type: Application
    Filed: January 14, 2009
    Publication date: November 18, 2010
    Applicant: BASF SE
    Inventors: Joachim Pfeffinger, Willi Doell