Patents Assigned to Oxeno Olefinchemie GmbH
  • Process for preparing tert-butanol
    Patent number: 7179948
    Abstract: The invention relates to a process for preparing tert-butanol by reaction of a homogeneous mixture comprising water, tert-butanol and an isobutene-containing hydrocarbon mixture over an acidic ion-exchange resin at from 30 to 120° C., wherein the homogeneous mixture contains, at a proportion by mass of isobutene of above 10%, from 30 to 80% of the maximum amount of water made possible by the solubility of water in the mixture of tert-butanol and the isobutene-containing hydrocarbon mixture.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: February 20, 2007
    Assignee: Oxeno Olefinchemie GmbH
    Inventors: Bernhard Scholz, Franz Nierlich, Dieter Reusch, Silvia Santiago Fernandez, Andreas Beckmann, Wilfried Bueschken, Alfred Kaizik
  • Use of isononyl benzoate as a film-forming agent
    Publication number: 20070010599
    Abstract: The present invention relates to the use of isononyl esters of benzoic acid as film-forming agents in compositions such as emulsion paints, mortars, plasters, adhesives, and varnishes, and also to compositions which comprise film-forming polymers and the isononyl ester of benzoic acid.
    Type: Application
    Filed: July 16, 2004
    Publication date: January 11, 2007
    Applicant: OXENO OLEFINCHEMIE GMBH
    Inventors: Michael Grass, Jurgen Koch
  • Phosphite compounds and novel phosphite metal complexes
    Patent number: 7161020
    Abstract: Phosphites of the formula I and phosphite-metal complexes, their preparation and their use in catalytic reactions, in particular in processes for the hydroformylation of olefins, are described.
    Type: Grant
    Filed: August 13, 2002
    Date of Patent: January 9, 2007
    Assignee: Oxeno Olefinchemie GmbH
    Inventors: Detlef Selent, Armin Boerner, Cornelia Borgmann, Dieter Hess, Klaus-Diether Wiese
  • Oligomerization of isobutene in N-butenic hydrocarbon streams
    Patent number: 7161053
    Abstract: Isobutene in isobutenic hydrocarbon mixtures is oligomerized over a solid acidic ion exchange resin, said acidic ion exchange resin containing, for example, sulfonic acid groups, some of whose protons have been exchanged for metal ions.
    Type: Grant
    Filed: August 6, 2003
    Date of Patent: January 9, 2007
    Assignee: Oxeno Olefinchemie GmbH
    Inventors: Andreas Beckmann, Franz Nierlich, Udo Peters, Wilfried Büschken, Lothar Kerker, Dietrich Maschmeyer, Dirk Röttger
  • Method for producing 1-octene from crack-c4
    Publication number: 20060281959
    Abstract: The invention relates to a process for preparing 1-octene from a C4 fraction from a cracker by telomerization of the 1,3-butadiene present in the C4 fraction from a cracker by means of methanol in the presence of a catalyst, hydrogenation of the telomer obtained in this way, dissociation of the hydrogenated telomer and work-up of the resulting dissociation product to give pure 1-octene.
    Type: Application
    Filed: May 6, 2004
    Publication date: December 14, 2006
    Applicant: Oxeno Olefinchemie GMBH
    Inventors: Jorg Krissmann, Dirk Rottger, Cornella Borgmann, Kerstin Kamper, Franz Nierlich, Alfred Kaizik, Udo Knippenberg, Rainer Malzkorn
  • Process for separating 2-butanol from tert-butanol/water mixtures
    Patent number: 7141707
    Abstract: The present invention relates to a process for separating 2-butanol from tert-butanol/water mixtures using a membrane to reduce a water concentration to less than the limit concentration of the distillation boundary line connecting the two azeotropes TBA/water and SBA/water and is subsequently worked up by distillation.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: November 28, 2006
    Assignee: OXENO Olefinchemie GmbH
    Inventors: Andreas Beckmann, Dieter Reusch, Franz-Felix Kuppinger
  • Process for the oligomerization of butenes
    Publication number: 20060264686
    Abstract: The invention relates to a process for the oligomerization of butenes, in which a stream which contains predominantly butenes and has been obtained by separation from a stream of hydrocarbons having a lower content of butenes, scrubbing and drying is fed to the oligomerization.
    Type: Application
    Filed: January 6, 2006
    Publication date: November 23, 2006
    Applicant: OXENO OLEFINCHEMIE GMBH
    Inventors: Lothar Kerker, Armin Rix, Frank Hoper, Rainer Malzkorn, Dirk Roettger
  • Preparation of highly pure methyl tert-butyl ether
    Publication number: 20060264681
    Abstract: The invention relates to a process for preparing methyl tert-butyl ether (MTBE) in qualities which are suitable for organic syntheses and for use as a specialty solvent from MTBE in fuel quality.
    Type: Application
    Filed: June 14, 2003
    Publication date: November 23, 2006
    Applicant: OXENO OLEFINCHEMIE GMBH
    Inventors: Fritz Obenaus, Wilhelm Droste, Bernhard Scholz, Franz Nierlich, Rainer Malzkorn, Udo Peters, Jochen Praefke, Richard Filipiak, Joachim Neumeister
  • Method for producing C-alcohol mixtures
    Patent number: 7138552
    Abstract: The present invention relates to a process for preparing a C13-alcohol mixture which is suitable, in particular, as precursor for the preparation of compounds having surfactant properties and of plasticizers.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: November 21, 2006
    Assignee: OXENO Olefinchemie GmbH
    Inventors: Alfred Kaizik, Walter Tötsch, Wilhelm Droste, Wilfried Büschken, Dirk Röttger, Klaus-Diether Wiese
  • Process for separating 2-butanol from tert-butanol/water mixtures
    Patent number: 7128814
    Abstract: The present invention relates to a process for separating 2-butanol from tert-butanol/water by adding of tert-butanol such that the water concentration lowers to less than the limit concentration of the distillation boundary line connecting the two azeotropes TBA/water and SBA/water and is subsequently worked up by distillation.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: October 31, 2006
    Assignee: OXENO Olefinchemie GmbH
    Inventors: Andreas Beckmann, Dieter Reusch
  • Method for the hydroformylation of olefinically unsaturated compounds, especially olefins,in the presence of cyclic carbonic acid esters
    Publication number: 20060241324
    Abstract: The present invention relates to a process for preparing aldehydes by hydroformylation of olefinically unsaturated compounds catalyzed by metals of groups 8 to 10 of the Periodic Table of the Elements in the presence of cyclic carbonic esters and ligands which contain no sulfonic acid or sulfonate group.
    Type: Application
    Filed: August 7, 2003
    Publication date: October 26, 2006
    Applicant: OXENO OLEFINCHEMIE GMBH
    Inventors: Oliver Moeller, Dirk Fridag, Cornelia Borgmann, Dieter Hess, Klaus-Diether Wiese
  • 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
  • Method for the production of 1-octene by reductive telomerisation
    Patent number: 7115790
    Abstract: The invention relates to a process for preparing 1-octene by telomerization of 1,3-butadiene using a reducing agent in the presence of a telomerization catalyst and partial hydrogenation of the octadiene obtained in this way.
    Type: Grant
    Filed: September 18, 2002
    Date of Patent: October 3, 2006
    Assignee: OXENO Olefinchemie GmbH
    Inventors: Matthias Beller, Ralf Jackstell, Holger Klein, Dirk Roettger, Dietrich Maschmeyer, Silvia Santiago Fernandez
  • N-phenyl-pyrrol bisphosphane compounds and the metal complexes of the same
    Patent number: 7109346
    Abstract: N-Phenylpyrrolebisphosphines of the formula I metal complexes of these N-phenylpyrrolebisphosphines and their use in metal-catalyzed reactions.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: September 19, 2006
    Assignee: OXENO Olefinchemie GmbH & Co. KG
    Inventors: Matthias Beller, Ralf Jackstell, Holger Klein, Detlef Heller, Hans-Joachim Drexler, Klaus-Diether Wiese, Dirk Roettger
  • 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
  • Method for telomerizing non-cyclic olefins
    Patent number: 7026523
    Abstract: The invention provides a process for the telomerization of acyclic olefins having at least two conjugated double bonds (I) or mixtures comprising such olefins by means of nucleophiles (II) using a palladium-carbene complex as catalyst.
    Type: Grant
    Filed: May 4, 2002
    Date of Patent: April 11, 2006
    Assignee: OXENO Olefinchemie GmbH
    Inventors: Dirk Röttger, Matthias Beller, Ralf Jackstell, Holger Klein, Klaus-Diether Wiese