Patents by Inventor Axel Tuchlenski

Axel Tuchlenski 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 continuous catalytic hydrogenation
    Patent number: 8586784
    Abstract: The invention relates to the preparation of alicyclic carboxylic acids or their derivatives by selective hydrogenation of the corresponding aromatic carboxylic acid (derivatives) in at least two series-connected reactors, at least one reactor being operated in loop operating mode. The catalyst volumes in the method are set in such a manner that the catalyst volume required, based on the conversion rate, is as low as possible.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: November 19, 2013
    Assignee: Evonik Oxeno GmbH
    Inventors: Michael Grass, Burkhard Reeken, Axel Tuchlenski, Alfred Kaizik
  • Microporous catalyst and method for hydrogenating aromatic compounds
    Patent number: 8207375
    Abstract: The invention relates to the hydrogenation of aromatic compounds, in particular the preparation of alicyclic polycarboxylic acids or their esters by core hydrogenation of the corresponding aromatic polycarboxylic acids or their esters, and also to catalysts suitable therefore.
    Type: Grant
    Filed: February 4, 2008
    Date of Patent: June 26, 2012
    Assignee: Evonik Oxeno GmbH
    Inventors: Michael Grass, Alfred Kaizik, Wilfried Bueschken, Axel Tuchlenski, Dietrich Maschmeyer, Kurt-Alfred Gaudschun, Frank Brocksien
  • Alicyclic polycarboxylic ester mixtures with a high trans proportion and method for the production thereof
    Patent number: 8044229
    Abstract: The present invention relates to the preparation of alicyclic polycarboxylic esters by ring-hydrogenation of the corresponding aromatic polycarboxylic esters on a catalyst which comprises at least one metal from the triad iron, cobalt, nickel, and at least one metal of the IInd, IIIrd, IVth, Vth, and/or VIth transition group of the Periodic Table. An alicyclic carboxylic ester mixture with a proportion above 10 mol % of the trans isomers. The use of the alicyclic polycarboxylic ester mixtures. Mixtures made from plastics and from alicyclic polycarboxylic ester mixtures.
    Type: Grant
    Filed: September 3, 2002
    Date of Patent: October 25, 2011
    Assignee: Evonik Oxeno GmbH
    Inventors: Dietrich Maschmeyer, Wilfried Bueschken, Michael Grass, Axel Tuchlenski
  • MIXTURE OF ALICYCLIC POLYCARBOXYLIC ESTERS HAVING HIGH CIS CONTENT
    Publication number: 20100137486
    Abstract: The present invention relates to mixtures of alicyclic polycarboxylic esters with high cis content, to a process for their preparation by ring-hydrogenation of the corresponding aromatic polycarboxylic esters, and also to the use of the mixtures.
    Type: Application
    Filed: February 3, 2010
    Publication date: June 3, 2010
    Applicant: OXENO OLEFINCHEMIE GMBH
    Inventors: Wilfried BUESCHKEN, Michael GRASS, Alfred KAIZIK, Dietrich MASCHMEYER, Axel TUCHLENSKI, Franz NIERLICH
  • Mixture of alicyclic polycarboxylic acid esters having high cis isomer content
    Patent number: 7683204
    Abstract: The present invention relates to mixtures of alicyclic polycarboxylic esters with high cis content, to a process for their preparation by ring-hydrogenation of the corresponding aromatic polycarboxylic esters, and also to the use of the mixtures.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: March 23, 2010
    Assignee: Oxeno Olefinchemie GmbH
    Inventors: Wilfried Büschken, Michael Graβ, Alfred Kaizik, Dietrich Maschmeyer, Axel Tuchlenski, Franz Nierlich
  • Method for the production of alicyclic polycarboxylic acid esters from partial esters of aromatic polycarboxylic acids
    Patent number: 7632961
    Abstract: The invention relates to a process for preparing full esters of alicyclic polycarboxylic acids from partial esters of aromatic polycarboxylic acids by hydrogenation of the partial ester followed by esterification of this compound.
    Type: Grant
    Filed: September 14, 2002
    Date of Patent: December 15, 2009
    Assignee: OXENO Olefinchemie GmbH
    Inventors: Wilfried Bueschken, Michael Grass, Alfred Kaizik, Dietrich Maschmeyer, Franz Nierlich, Axel Tuchlenski
  • Method for the production of isobutene from commericial methyl tert-butly ether
    Patent number: 7439413
    Abstract: The invention relates to a process for preparing high-purity isobutene from industrial methyl tert-butyl ether (MTBE) and the economical utilization of the secondary streams.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: October 21, 2008
    Assignee: OXENO Olefinchemie GmbH
    Inventors: Rainer Malzkorn, Franz Nierlich, Udo Peters, Axel Tuchlenski
  • Method for preparing alicyclic carboxylic acids and their esters
    Patent number: 7435848
    Abstract: A method for the continuous preparation of an alicyclic carboxylic acid or an ester of the alicyclic carboxylic acid. A plastic which incorporates the alicyclic carboxylic acid or an ester of the alicyclic carboxylic acid. An article made of a plastic which incorporates the alicyclic carboxylic acid or an ester of the alicyclic carboxylic acid. A liquid which incorporates the alicycic carboxylic acid or an ester of the alicyclic carboxylic acid.
    Type: Grant
    Filed: January 3, 2006
    Date of Patent: October 14, 2008
    Assignee: OXENO Olefinchemie GmbH
    Inventors: Michael Grass, Burkhard Reeken, Axel Tuchlenski, Alfred Kaizik, Wilfried Büschken
  • MICROPOROUS CATALYST AND METHOD FOR HYDROGENATING AROMATIC COMPOUNDS
    Publication number: 20080146832
    Abstract: The invention relates to the hydrogenation of aromatic compounds, in particular the preparation of alicyclic polycarboxylic acids or their esters by core hydrogenation of the corresponding aromatic polycarboxylic acids or their esters, and also to catalysts suitable therefore.
    Type: Application
    Filed: February 4, 2008
    Publication date: June 19, 2008
    Applicant: OXENO OLEFINCHEMIE GMBH
    Inventors: Michael Grass, Alfred Kaizik, Wilfried Buschken, Axel Tuchlenski, Dietrich Maschmeyer, Kurt-Alfred Gaudschun, Frank Brocksien
  • Method for producing 1-olefins using palladium carbene compounds
    Patent number: 7371909
    Abstract: The invention relates to a process 1-olefins by telomerization of compounds having conjugated double bonds with a telogen in the presence of a noble metal telomerization catalyst, hydrogenation of the telomer and cleavage of the hydrogenated intermediate. Use of the 1-olefin as comonomer.
    Type: Grant
    Filed: October 1, 2002
    Date of Patent: May 13, 2008
    Assignee: Oxeno Olefinchemie GmbH
    Inventors: Matthias Beller, Ralf Jackstell, Holger Klein, Dirk Roettger, Klaus-Diether Wiese, Dietrich Maschmeyer, Axel Tuchlenski, Alfred Kaizik, Silvia Santiago Fernandez
  • Catalyst and method for hydrogenating aromatic compounds
    Patent number: 7361714
    Abstract: The invention relates to the hydrogenation of aromatic compounds, in particular the preparation of alicyclic polycarboxylic acids or esters of these, via ring hydrogenation of the corresponding aromatic polycarboxylic acids or esters of these, and also to catalysts suitable for this purpose.
    Type: Grant
    Filed: April 26, 2003
    Date of Patent: April 22, 2008
    Assignee: OXENO Olefinchemie GmbH
    Inventors: Michael Grass, Alfred Kaizik, Wilfried Bueschken, Axel Tuchlenski, Dietrich Maschmeyer, Kurt-Alfred Gaudschun, Frank Brocksien
  • Method for producing tert-butanol by means of reactive rectification
    Patent number: 7115787
    Abstract: The invention relates to a process for preparing tert-butanol (TBA) from isobutene-containing mixtures, in which at least part of the conversion is achieved with the aid of a reactive rectification.
    Type: Grant
    Filed: November 11, 2003
    Date of Patent: October 3, 2006
    Assignee: OXENO Olefinchemie GmbH
    Inventors: Dieter Reusch, Andreas Beckmann, Franz Nierlich, Axel Tuchlenski
  • Catalyst and method for hydrogenating aromatic compounds
    Publication number: 20060183936
    Abstract: The invention relates to the hydrogenation of aromatic compounds, in particular the preparation of alicyclic polycarboxylic acids or esters of these, via ring hydrogenation of the corresponding aromatic polycarboxylic acids or esters of these, and also to catalysts suitable for this purpose.
    Type: Application
    Filed: April 26, 2003
    Publication date: August 17, 2006
    Applicant: Oxeno Olefinchemie GMBH
    Inventors: Michael Grass, Alfred Kaizik, Wilfried Buschken, Axel Tuchlenski, Dietrich Maschmeyer, Kurt-Alfred Gaudschun, Frank Brocksien
  • Method for preparing alicyclic carboxylic acids and their esters
    Publication number: 20060167151
    Abstract: A method for the continuous preparation of an alicyclic carboxylic acid or an ester of the alicyclic carboxylic acid. A plastic which incorporates the alicyclic carboxylic acid or an ester of the alicyclic carboxylic acid. An article made of a plastic which incorporates the alicyclic carboxylic acid or an ester of the alicyclic carboxylic acid. A liquid which incorporates the alicycic carboxylic acid or an ester of the alicyclic carboxylic acid.
    Type: Application
    Filed: January 3, 2006
    Publication date: July 27, 2006
    Applicant: OXENO OLEFINCHEMIE GMBH
    Inventors: Michael Grass, Burkhard Reeken, Axel Tuchlenski, Alfred Kaizik, Wilfried Buschken
  • Method for continuous catalytic hydrogenation
    Publication number: 20060161017
    Abstract: The invention relates to the preparation of alicyclic carboxylic acids or their derivatives by selective hydrogenation of the corresponding aromatic carboxylic acid (derivatives) in at least two series-connected reactors, at least one reactor being operated in loop operating mode. The catalyst volumes in the method are set in such a manner that the catalyst volume required, based on the conversion rate, is as low as possible.
    Type: Application
    Filed: December 29, 2005
    Publication date: July 20, 2006
    Applicants: DEGUSSA AG, OXENO OLEFINCHEMIE GMBH
    Inventors: Michael Grass, Burkhard Reeken, Axel Tuchlenski, Alfred Kaizik
  • Method for the production of isobutene from commercial methyl tert-butyl ether
    Publication number: 20060135833
    Abstract: The invention relates to a process for preparing high-purity isobutene from industrial methyl tert-butyl ether (MTBE) and the economical utilization of the secondary streams.
    Type: Application
    Filed: July 11, 2003
    Publication date: June 22, 2006
    Applicant: OXENO OLEFINCHEMIE GMBH
    Inventors: Rainer Malzkorn, Franz Nierlich, Udo Peters, Axel Tuchlenski
  • Method for producing 1-octene
    Patent number: 7030286
    Abstract: The invention relates to a process for preparing 1-octene by reacting 1,3-butadiene with a telogen of the formula H—X—Y—H, where X is O, N, S or P and Y is C, N or Si and X and Y bear, depending on their valence, further substituents, in the presence of a telomerization catalyst to form a telomer of the formula H2C?CH—CH2—CH2—CH2—CH?CH—CH2—X—Y—H, partially hydrogenating the telomer to form a 1-substituted 2-octene of the formula H3C—CH2—CH2—CH2—CH2—CH?CH—CH2—X—Y—H and dissociating the 1-substituted 2-octene to give 1-octene.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: April 18, 2006
    Assignee: OXENO Olefinchemie GmbH
    Inventors: Dirk Röttger, Axel Tuchlenski
  • Microporous catalyst and method for hydrogenating aromatic compounds
    Publication number: 20060041167
    Abstract: The invention relates to the hydrogenation of aromatic compounds, in particular the preparation of alicyclic polycarboxylic acids or their esters by core hydrogenation of the corresponding aromatic polycarboxylic acids or their esters, and also to catalysts suitable therefor.
    Type: Application
    Filed: June 7, 2003
    Publication date: February 23, 2006
    Inventors: Michael Grass, Alfred Kaizik, Wilfried Buschken, Axel Tuchlenski, Dietrich Maschmeyer, Kurt-Alfred Gaudschun, Frank Brocksien
  • Method for producing tert butanol by means of reactive rectification
    Publication number: 20060025638
    Abstract: The invention relates to a process for preparing tert-butanol (TBA) from isobutene-containing mixtures, in which at least part of the conversion is achieved with the aid of a reactive rectification.
    Type: Application
    Filed: November 11, 2003
    Publication date: February 2, 2006
    Applicant: OXENO OLEFINCHEMIE GMBH
    Inventors: Dieter Reusch, Andreas Beckmann, Franz Nierlich, Axel Tuchlenski
  • Method for the production of alicyclic polycarboxylic acid esters from partial esters aromatic polycarboxylic acids
    Publication number: 20050101800
    Abstract: The invention relates to a process for preparing full esters of alicyclic polycarboxylic acids from partial esters of aromatic polycarboxylic acids by hydrogenation of the partial ester followed by esterification of this compound.
    Type: Application
    Filed: September 14, 2002
    Publication date: May 12, 2005
    Inventors: Wilfried Büschken, Michael Grass, Alfred Kaizik, Dietrich Maschmeyer, Franz Nierlich, Axel Tuchlenski