Patents by Inventor Wolfgang Dukat

Wolfgang Dukat 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 the production of aldehydes
    Patent number: 8173847
    Abstract: Aldehydes are produced by unmodified rhodium catalyzed hydroformylation process in a homogeneous organic phase using a solution of unmodified rhodium catalyst and an organic acid in a total amount, calculated as acid equivalent, of from greater than 3 moles to 3000 moles of acid per mole of rhodium. The organic acid is selected from: saturated aliphatic monocarboxylic acids having from 5 to 13 carbon atoms in the molecule; saturated aliphatic dicarboxylic acids having from 5 to 13 carbon atoms in the molecule; sulphonic acids having from 1 to 12 carbon atoms in the molecule; and combinations thereof. Use of the process can lead to either a significant increase in conversion without reducing selectivity for the desired aldehyde or a reduction in the specific use of rhodium.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: May 8, 2012
    Assignee: Oxea GmbH
    Inventors: Andreas Fischbach, Klaus Schmid, Christoph Balzarek, Wolfgang Dukat, Sandra Fürmeier, Rainer Lukas, Horst Scholz, Edgar Storm
  • METHOD FOR THE PRODUCTION OF ALDEHYDES
    Publication number: 20100256422
    Abstract: Aldehydes are produced by unmodified rhodium catalyzed hydroformylation process in a homogeneous organic phase using a solution of unmodified rhodium catalyst and an organic acid in a total amount, calculated as acid equivalent, of from greater than 3 moles to 3000 moles of acid per mole of rhodium. The organic acid is selected from: saturated aliphatic monocarboxylic acids having from 5 to 13 carbon atoms in the molecule; saturated aliphatic dicarboxylic acids having from 5 to 13 carbon atoms in the molecule; sulphonic acids having from 1 to 12 carbon atoms in the molecule; and combinations thereof. Use of the process can lead to either a significant increase in conversion without reducing selectivity for the desired aldehyde or a reduction in the specific use of rhodium.
    Type: Application
    Filed: October 28, 2008
    Publication date: October 7, 2010
    Inventors: Andreas Fischbach, Klaus Schmid, Christoph Batzarek, Wolfgang Dukat, Sandra Fürmeier, Rainer Lukas, Horst Scholz, Edgar Storm
  • Process for preparing TCD-alcohol DM
    Patent number: 7301057
    Abstract: The present invention relates to a process for preparing 3(4),8(9)-dihydroxymethyltricyclo[5.2.102.6]decane by hydrogenating the hyd roformylation products of d icyclopentad lene. The process comprises carrying out the hydrogenation in the presence of water, optionally after addition of water.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: November 27, 2007
    Assignee: Oxea Deutschland GmbH
    Inventors: Wolfgang Dukat, Edgar Storm, Klaus Schmid
  • Process for purifying alicyclic alcohols
    Patent number: 7074304
    Abstract: A process for purifying alicyclic alcohols by distillation, wherein the alicyclic alcohols are distilled in the presence of from 1 to 550 ppm of acidic compounds.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: July 11, 2006
    Assignee: Celanese Chemicals Europe GmbH
    Inventors: Wolfgang Dukat, Peter Lappe, Klaus Schmid, Horst Scholz, Edgar Storm
  • Process for preparing TCD-alcohol DM
    Publication number: 20050272960
    Abstract: The present invention relates to a process for preparing 3(4),8(9)-dihydroxymethyltricyclo[5.2.1.02,6]decane by hydrogenating the hydroformylation products of dicyclopentadiene. The process comprises carrying out the hydrogenation in the presence of water, optionally after addition of water.
    Type: Application
    Filed: May 25, 2005
    Publication date: December 8, 2005
    Inventors: Wolfgang Dukat, Edgar Storm, Klaus Schmid
  • Process for purifying alicyclic alcohols
    Publication number: 20030183502
    Abstract: A process for purifying alicyclic alcohols by distillation, wherein the alicyclic alcohols are distilled in the presence of from 1 to 550 ppm of acidic compounds.
    Type: Application
    Filed: December 13, 2002
    Publication date: October 2, 2003
    Inventors: Wolfgang Dukat, Peter Lappe, Klaus Schmid, Horst Scholz, Edgar Storm