Patents by Inventor Udo Lenz

Udo Lenz 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 obtaining alcohols from aldehydes
    Patent number: 10577297
    Abstract: The present invention relates to a method for preparing saturated Cn- and C2n-alcohols, wherein the separation of the Cn-alcohols and the C2n-alcohols is effected by means of at least one two-column system or by means of at least one dividing wall column.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: March 3, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Dirk Fridag, Robert Franke, Michael Grass, Florian Boeck, Corinna Hecht, Benedikt Dercks, Udo Lenz, Christoph Hiller, Christoph Ehlers, Stefan Münzner
  • Method for obtaining alcohols from aldehydes III
    Patent number: 10562833
    Abstract: The present invention relates to a method for preparing saturated Cn- and C2n-alcohols, wherein the ratio of Cn- to C2n-alcohols is controlled by a distillative separation of the aldehydes used.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: February 18, 2020
    Assignee: Evonik Degussa GmbH
    Inventors: Dirk Fridag, Robert Franke, Michael Grass, Florian Boeck, Corinna Hecht, Benedikt Dercks, Udo Lenz, Christoph Hiller, Christoph Ehlers, Stefan Münzner
  • Method for obtaining alcohols from aldehydes II
    Patent number: 10501392
    Abstract: The present invention relates to a method for preparing saturated Cn- and C2n-alcohols, wherein the ratio of Cn- to C2n-alcohols is controlled by the diversion of substreams in individual method steps.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: December 10, 2019
    Assignee: Evonik Degussa GmbH
    Inventors: Dirk Fridag, Robert Franke, Michael Grass, Florian Boeck, Corinna Hecht, Benedikt Dercks, Udo Lenz, Christoph Hiller, Christoph Ehlers, Stefan Münzner
  • Method for obtaining alcohols from aldehydes III
    Publication number: 20190169105
    Abstract: The present invention relates to a method for preparing saturated Cn- and C2n-alcohols, wherein the ratio of Cn- to C2n-alcohols is controlled by a distillative separation of the aldehydes used.
    Type: Application
    Filed: November 29, 2018
    Publication date: June 6, 2019
    Inventors: Dirk Fridag, Robert Franke, Michael Grass, Florian Boeck, Corinna Hecht, Benedikt Dercks, Udo Lenz, Christoph Hiller, Christoph Ehlers, Stefan Münzner
  • Method for obtaining alcohols from aldehydes II
    Publication number: 20190169104
    Abstract: The present invention relates to a method for preparing saturated Cn- and C2n-alcohols, wherein the ratio of Cn- to C2n-alcohols is controlled by the diversion of substreams in individual method steps.
    Type: Application
    Filed: November 29, 2018
    Publication date: June 6, 2019
    Inventors: Dirk Fridag, Robert Franke, Michael Grass, Florian Boeck, Corinna Hecht, Benedikt Dercks, Udo Lenz, Christoph Hiller, Christoph Ehlers, Stefan Münzner
  • Method for obtaining alcohols from aldehydes
    Publication number: 20190169106
    Abstract: The present invention relates to a method for preparing saturated Cn- and C2n-alcohols, wherein the separation of the Cn-alcohols and the C2n-alcohols is effected by means of at least one two-column system or by means of at least one dividing wall column.
    Type: Application
    Filed: November 29, 2018
    Publication date: June 6, 2019
    Inventors: Dirk Fridag, Robert Franke, Michael Grass, Florian Boeck, Corinna Hecht, Benedikt Dercks, Udo Lenz, Christoph Hiller, Christoph Ehlers, Stefan Münzner
  • Control of the viscosity of reaction solutions in hydroformylation processes
    Patent number: 9428433
    Abstract: The present invention relates to a method and a device for controlling the viscosity of reaction solutions in the hydroformylation of olefin-containing mixtures.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: August 30, 2016
    Assignee: Evonik Degussa GmbH
    Inventors: Dirk Fridag, Udo Lenz, Hans-Gerd Lueken, Robert Franke, Markus Rudek, Klaus-Diether Wiese, Soenke Broecker, Markus Priske, Christoph Patalong
  • CONTROL OF THE VISCOSITY OF REACTION SOLUTIONS IN HYDROFORMYLATION METHODS
    Publication number: 20150299079
    Abstract: The present invention relates to a method and a device for controlling the viscosity of reaction solutions in the hydroformylation of olefin-containing mixtures.
    Type: Application
    Filed: December 9, 2013
    Publication date: October 22, 2015
    Applicant: Evonik Degussa GmbH
    Inventors: Dirk FRIDAG, Udo LENZ, Hans-Gerd LUEKEN, Robert FRANKE, Markus RUDEK, Klaus-Diether WIESE, Soenke BROECKER, Markus PRISKE, Christoph PATALONG
  • Process for preparing Caldehyde mixtures with a high n-pentanal content
    Patent number: 8461394
    Abstract: A process for preparing a C5 aldehyde mixture from a hydrocarbon mixture comprising at least one linear butene by terminal hydroformylation under isomerizing conditions, using a catalyst system comprising rhodium, a bisphosphite ligand, and an amine.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: June 11, 2013
    Assignee: Evonik Oxeno GmbH
    Inventors: Hans-Gerd Lueken, Dirk Fridag, Udo Lenz, Hermann-Josef Schulte-Althoff, Klaus-Diether Wiese, Alfred Kaizik, Patrick Muhlack, Wilfried Bueschken, Frank Hoeper
  • PROCESS FOR PREPARING C5 ALDEHYDE MIXTURES WITH A HIGH N-PENTANAL CONTENT
    Publication number: 20110130595
    Abstract: A process for preparing a C5 aldehyde mixture from a hydrocarbon mixture comprising at least one linear butene by terminal hydroformylation under isomerizing conditions, using a catalyst system comprising rhodium, a bisphosphite ligand, and an amine.
    Type: Application
    Filed: April 28, 2009
    Publication date: June 2, 2011
    Applicant: Evonik Oxeno GmbH
    Inventors: Hans-Gerd Lueken, Dirk Fridag, Udo Lenz, Hermann-Josef Schulte-Althoff, Klaus-Diether Wiese, Alfred Kaizik, Patrick Muhlack, Wilfried Bueschken, Frank Hoeper
  • Process for the distillation of crude ester in the DMT/PTA process
    Patent number: 6180817
    Abstract: A process for preparing crude dimethyl terephthalate, comprises oxidizing a mixture comprising para-xylene and methyl para-toluate, esterifying the oxidized mixture with methanol, separating the resulting crude ester into fractions. By separating the crude ester with a distillation column containing structured packing and using a lower bottom temperature, product yield is increased, and the process is made more economical.
    Type: Grant
    Filed: September 16, 1998
    Date of Patent: January 30, 2001
    Assignee: Huels Aktiengesellschaft
    Inventors: Udo Lenz, Ulrich Neutzler, Anton Schoengen, Reinhard Sigg
  • Process for the distillation of crude ester in the DMT/PTA process
    Patent number: 6096171
    Abstract: A process for purifying a crude ester containing dimethyl terephthalate, includes flash distilling a mixture including para-xylene and methyl para-toluate, and separating the crude ester into fractions. By separating the crude ester with a distillation column containing structured packing and using a lower bottom temperature, product yield is increased, and the process is made more economical.
    Type: Grant
    Filed: May 13, 1998
    Date of Patent: August 1, 2000
    Assignee: Huels Aktiengesellschaft
    Inventors: Udo Lenz, Ulrich Neutzler, Anton Schoengen, Reinhard Sigg
  • Process for the distillation of crude ester in the DMT/PTA process
    Patent number: 5852201
    Abstract: A process for preparing crude dimethyl terephthalate, comprises oxidizing a mixture comprising para-xylene and methyl para-toluate, esterifying the oxidized mixture with methanol, separating the resulting crude ester into fractions. By separating the crude ester with a distillation column containing structured packing and using a lower bottom temperature, product yield is increased, and the process is made more economical.
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: December 22, 1998
    Assignee: Huels Aktiengesellschaft
    Inventors: Udo Lenz, Ulrich Neutzler, Anton Schoengen, Reinhard Sigg