Patents by Inventor Karl Heinz Brauch

Karl Heinz Brauch 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 1,2-diamino-3-methylcyclohexane and/or 1,2-diamino-4-methylcyclohexane
    Patent number: 8134028
    Abstract: A process for preparing 1,2-diamino-3-methylcyclohexane and/or 1,2-diamino-4-methylcyclohexane by reacting 2,3- and/or 3,4-diaminotoluene with hydrogen at elevated pressure and elevated temperature in the presence of a heterogeneous rhodium catalyst, wherein a mixture comprising 2,3- and/or 3,4-diaminotoluene, a dialkyl ether and/or alicyclic ether as a solvent and ammonia is initially charged in an autoclave in the presence of the catalyst and subsequently hydrogenated while supplying hydrogen.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: March 13, 2012
    Assignee: BASF SE
    Inventors: Friederike Osswald, Karl Heinz Brauch, Arnd Bottcher, Jochem Henkelmann, Frederik van Laar, Till Gerlach
  • Method for Producing 1,2-Diamino-3-Methylcyclohexane and/or 1,2-Diamino-4-Methylcyclohexane
    Publication number: 20090253938
    Abstract: A process for preparing 1,2-diamino-3-methylcyclohexane and/or 1,2-diamino-4-methylcyclohexane by reacting 2,3- and/or 3,4-diaminotoluene with hydrogen at elevated pressure and elevated temperature in the presence of a heterogeneous rhodium catalyst, wherein a mixture comprising 2,3- and/or 3,4-diaminotoluene, a dialkyl ether and/or alicyclic ether as a solvent and ammonia is initially charged in an autoclave in the presence of the catalyst and subsequently hydrogenated while supplying hydrogen.
    Type: Application
    Filed: December 14, 2005
    Publication date: October 8, 2009
    Applicant: BASF AKTIENGESELLSCHAFT
    Inventors: Friederike Osswald, Karl Heinz Brauch, Arnd Bottcher, Jochem Henkelmann, Frederik Van Laar, Till Gerlach
  • Process for reacting an organic compound in the presence of a ruthenium catalyst formed in situ
    Patent number: 5902916
    Abstract: A process for reacting an organic compound in the presence of a catalyst, wherein the catalyst comprises a homogeneous ruthenium compound or a mixture of two or more thereof deposited in situ on a support.
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: May 11, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Ruhl, Boris Breitscheidel, Franz Josef Brocker, Wolfgang Reif, Jochem Henkelmann, Karl Heinz Brauch, Andreas Henne