Patents by Inventor Christof Wilhelm Wigbers

Christof Wilhelm Wigbers 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).

  • Patent number: 8461391
    Abstract: The present invention relates to a process for preparing N,N-substituted 1,3-propanediamine by a) reacting secondary amine with acrolein at a temperature of from (?50) to 100° C. and a pressure of from 0.01 to 300 bar, and b) reacting the reaction mixture obtained in stage a) with hydrogen and ammonia in the presence of a hydrogenation catalyst at a temperature of from 40 to 400° C. and a pressure of from 1 to 400 bar, wherein the molar ratio of secondary amine to acrolein in stage a) is 2:1 or more and the hydrogenation catalyst used in stage b) comprises cobalt. In a preferred embodiment, acrolein which has been obtained from glycerol based on renewable raw materials is used. The invention further relates to the use of N,N-dimethyl-1,3-propanediamine (DMAPA) based on renewable raw materials as a feedstock for lubricant soaps and other detergents, coagulants, polymers and comb polymers. In a further preferred embodiment, stage b) is performed in the presence of water.
    Type: Grant
    Filed: May 11, 2009
    Date of Patent: June 11, 2013
    Assignee: BASF SE
    Inventors: Martin Ernst, Johann-Peter Melder, Christof Wilhelm Wigbers
  • Patent number: 8450530
    Abstract: The present invention relates to a process for preparing unsymmetric secondary tert-butylamines by continuous amination in the gas phase, wherein tert-butylamine is converted over hydrogenation catalysts in the presence of an alcohol or aldehyde and hydrogen.
    Type: Grant
    Filed: April 6, 2011
    Date of Patent: May 28, 2013
    Assignee: BASF SE
    Inventors: Christoph Mueller, Christof Wilhelm Wigbers, Johann-Peter Melder, Gerd Haderlein, Norbert Gutfrucht
  • Patent number: 8445726
    Abstract: The present application relates to a process for preparing unsymmetric secondary tert-butylamines which, as well as the tert-butyl radical, also comprise an alkyl, cycloalkyl or benzyl radical. They are prepared by reacting corresponding aldehydes with tert-butylamine and hydrogen in the presence of hydrogenation catalysts (reductive amination) in the liquid phase.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: May 21, 2013
    Assignee: BASF SE
    Inventors: Christof Wilhelm Wigbers, Christoph Mueller, Johann-Peter Melder, Bernd Stein, Harald Meissner, Gerd Haderlein, Norbert Gutfrucht
  • Patent number: 8436169
    Abstract: Process for preparing 1,4-bishydroxyethylpiperazine (BHEPIP) of the formula I wherein diethanolamine (DEOA) of the formula II is reacted in the liquid phase in a reactor at a temperature in the range from 130 to 300° C. in the presence of a copper-comprising, chromium-free heterogeneous catalyst.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: May 7, 2013
    Assignee: BASF SE
    Inventors: Christof Wilhelm Wigbers, Nina Challand, Johann-Peter Melder, Udo Rheude, Roman Dostalek
  • Publication number: 20120296121
    Abstract: The invention relates to a process for producing carbon fillers having covalently bonded amino groups, by converting a mixture comprising carbon fillers and alkali metals and/or alkaline earth metals and/or amides thereof in liquid anhydrous ammonia, optionally together with an inert solvent, at temperatures of 35 to 500° C. and a pressure of 30 to 250 bar.
    Type: Application
    Filed: May 17, 2012
    Publication date: November 22, 2012
    Applicant: BASF SE
    Inventors: Christof Wilhelm Wigbers, Marion Kristina Brinks, Johann-Peter Melder
  • Publication number: 20120245390
    Abstract: The present invention relates to a process for hydrogenating nitriles by means of hydrogen in the presence of a catalyst in a reactor, where the catalyst is arranged in a fixed bed, wherein the cross-sectional loading in the reactor is in the range from 5 kg/(m2s) to 50 kg/(m2s). The present invention further relates to a process for preparing downstream products of isophoronediamine (IPDA) or N,N-dimethylaminopropylamine (DMAPA) from amines prepared according to the invention.
    Type: Application
    Filed: March 22, 2012
    Publication date: September 27, 2012
    Applicant: BASF SE
    Inventors: Christof Wilhelm Wigbers, Christoph Müller, Wolfgang Mägerlein, Petr Kubanek, Thomas Heidemann, Johann-Peter Melder, Thomas Krug, Oliver Bey
  • Publication number: 20120245389
    Abstract: The present invention relates to a process for hydrogenating organic nitriles by means of hydrogen in the presence of a catalyst in a reactor, where the shaped body catalyst is arranged in a fixed bed, wherein the shaped body in the shape of spheres or rods has in each case a diameter 3 mm or less, in the shape of tablets a height of 4 mm or less, and in the case of all other geometries in each case has an equivalent diameter L=1/a? of 0.70 mm or less, where a? is the external surface area per unit volume (mms2/mmp3), where: a ? = A p V p , where Ap is the external surface area of the catalyst particle (mms2) and Vp is the volume of the catalyst particle (mmp3). The present invention further relates to a process for preparing downstream products of isophoronediamine (IPDA) or N,N-dimethylaminopropylamine (DMAPA) from amines prepared according to the invention.
    Type: Application
    Filed: March 22, 2012
    Publication date: September 27, 2012
    Applicant: BASF SE
    Inventors: Christof Wilhelm Wigbers, Christoph Müller, Wolfgang Mägerlein, Martin Ernst, Thomas Heidemann, Johann-Peter Melder, Lucia Königsmann, Milind Joshi, Oliver Bey, Bernd Stein
  • Publication number: 20120157679
    Abstract: Process for preparing a cyclic tertiary methylamine of the formula I where A is a C4-alkylene group, a C5-alkylene group or a —(CH2)2—B—(CH2)2—group, where B is oxygen (O) or an N—R1 radical and R1 is C1-C5-alkyl, aryl or C5-C7-cycloalkyl, wherein an amino alcohol II from the group consisting of 1,4-aminobutanol, 1,5-aminopentanol, aminodiglycol (ADG) or aminoethylethanolamine of the formula IIa where R1 is as defined above or is hydrogen (H), in which case R1?CH3 in the amine I, is reacted with methanol in a reactor at a temperature in the range from 150 to 270° C. in the liquid phase in the presence of a copper-comprising heterogeneous catalyst.
    Type: Application
    Filed: June 13, 2011
    Publication date: June 21, 2012
    Applicant: BASF SE
    Inventors: CHRISTOF WILHELM WIGBERS, Johann-Peter Melder, Bernd Stein, Harald Meißner
  • Publication number: 20120108816
    Abstract: Process for preparing 1,4-bishydroxyethylpiperazine (BHEPIP) of the formula I wherein diethanolamine (DEOA) of the formula II is reacted in the liquid phase in a reactor at a temperature in the range from 130 to 300° C. in the presence of a copper-comprising, chromium-free heterogeneous catalyst.
    Type: Application
    Filed: October 28, 2011
    Publication date: May 3, 2012
    Applicant: BASF SE
    Inventors: Christof Wilhelm Wigbers, Nina Challand, Johann-Peter Melder, Udo Rheude, Roman Dostalek
  • Publication number: 20120095221
    Abstract: A process for preparing a cyclic tertiary amine of the formula I where A is a C4-alkylene group, a C5-alkylene group or a —(CH2)2—B—(CH2)2— group, where B is oxygen (O) or an N—R1 radical and R1 is C1-C5-alkyl, aryl or C5-C7-cycloalkyl, and the radical R2 is a linear or branched C2-C16-alkyl, C5-C7-cycloalkyl or C7-C20-aralkyl, in which (i) an amino alcohol II from the group consisting of 1,4-aminobutanol, 1,5-aminopentanol, aminodiglycol (ADG) and aminoethylethanolamine of the formula IIa where R1 is as defined above or hydrogen (H), in which case R1?R2 in the amine I, is reacted with a primary or secondary alcohol R2OH (III) at a temperature in the range from 150 to 270° C. in the liquid phase in the presence of a copper-comprising heterogeneous catalyst in a reactor.
    Type: Application
    Filed: October 14, 2011
    Publication date: April 19, 2012
    Applicant: BASF SE
    Inventors: Christof Wilhelm Wigbers, Johann-Peter Melder, Bernd Stein, Harald Meißner
  • Publication number: 20120010431
    Abstract: The present invention relates to a process for preparing 1-adamantyltrimethyl-ammonium hydroxide.
    Type: Application
    Filed: March 11, 2010
    Publication date: January 12, 2012
    Applicant: BASF SE
    Inventors: Christof Wilhelm Wigbers, Martin Ernst, Laszlo Szarvas, Giovanni D'Andola, Ellen Dahlhoff, Gabriele Iffland, Peter Raatz, Falk Simon, Matthias Frauenkron
  • Publication number: 20110313187
    Abstract: The present invention relates to a process for improving the catalytic properties of a catalyst comprising one or more elements selected from the group consisting of cobalt, nickel and copper, said catalyst being present in the form of a structured monolith, by contacting the catalyst with one or more basic compounds selected from the group of the alkali metals, alkaline earth metals and rare earth metals. The invention further relates to a process for hydrogenating compounds which comprise at least one unsaturated carbon-carbon, carbon-nitrogen or carbon-oxygen bond in the presence of a catalyst comprising one or more elements selected from the group consisting of cobalt, nickel and copper, said catalyst being present in the form of a structured monolith, by contacting the catalyst with one or more basic compounds selected from the group of the alkali metals, alkaline earth metals and rare earth metals.
    Type: Application
    Filed: February 1, 2010
    Publication date: December 22, 2011
    Inventors: Christof Wilhelm Wigbers, Jochen Steiner, Martin Ernst, Bram Willem Hoffer, Ekkehard Schwab, Johann-Peter Melder
  • Publication number: 20110313188
    Abstract: The present invention relates to a catalyst comprising one or more elements selected from the group consisting of cobalt, nickel and copper, said catalyst being present in the form of a structured monolith, wherein said catalyst comprises one or more elements selected from the group of the alkali metals, alkaline earth metals and rare earth metals. The invention further relates to processes for preparing the inventive catalyst and to the use of the inventive catalyst in a process for hydrogenating organic substances, especially for hydrogenating nitriles.
    Type: Application
    Filed: February 4, 2010
    Publication date: December 22, 2011
    Applicant: BASF SE
    Inventors: Christof Wilhelm Wigbers, Jochen Steiner, Martin Ernst, Bram Willem Hoffer, Ekkehard Schwab, Johann-Peter Melder
  • Publication number: 20110313186
    Abstract: The present invention relates to catalysts and processes for preparation thereof, said catalysts being obtainable by contacting a monolithic catalyst support with a suspension which comprises one or more insoluble or sparingly soluble compounds of the elements selected from the group of the elements cobalt, nickel and copper. The invention further relates to the use of the inventive catalyst in a process for hydrogenating organic substances, especially for hydrogenating nitriles, and to a process for hydrogenating organic compounds, which comprises using an inventive catalyst in the process.
    Type: Application
    Filed: February 1, 2010
    Publication date: December 22, 2011
    Applicant: BASF SE
    Inventors: Christof Wilhelm Wigbers, Jochen Steiner, Martin Ernst, Bram Willem Hoffer, Ekkehard Schwab, Johann-Peter Melder
  • Publication number: 20110288338
    Abstract: The present invention relates to a process for preparing N,N-substituted 3-aminopropan-1-ols by a) reacting secondary amine with acrolein at a temperature of (?50) to 100° C. and a pressure of 0.01 to 300 bar, and b) reacting the reaction mixture obtained in stage a) with hydrogen and ammonia in the presence of a hydrogenation catalyst at a pressure of 1 to 400 bar, wherein the molar ratio of secondary amine to acrolein in stage a) is 1:1 or more and the temperature in stage b) is in the range from (?50) to 70° C. In a preferred embodiment, acrolein which has been obtained from glycerol based on renewable raw materials is used.
    Type: Application
    Filed: November 2, 2009
    Publication date: November 24, 2011
    Applicant: BASF SE
    Inventors: Christof Wilhelm Wigbers, Johann-Peter Melder, Martin Ernst
  • Publication number: 20110251433
    Abstract: The present application relates to a process for preparing unsymmetric secondary tert-butylamines which, as well as the tert-butyl radical, also comprise an alkyl, cycloalkyl or benzyl radical. They are prepared by reacting corresponding aldehydes with tert-butylamine and hydrogen in the presence of hydrogenation catalysts (reductive amination) in the liquid phase.
    Type: Application
    Filed: April 5, 2011
    Publication date: October 13, 2011
    Applicant: BASF SE
    Inventors: Christof Wilhelm WIGBERS, Christoph Müller, Johann-Peter Melder, Bernd Stein, Harald Meißner, Gerd Haderlein, Norbert Gutfrucht
  • Publication number: 20110251434
    Abstract: The present invention relates to a process for preparing unsymmetric secondary tert-butylamines by continuous amination in the gas phase, wherein tert-butylamine is converted over hydrogenation catalysts in the presence of an alcohol or aldehyde and hydrogen.
    Type: Application
    Filed: April 6, 2011
    Publication date: October 13, 2011
    Applicant: BASF SE
    Inventors: Christoph Müller, Christof Wilhelm Wigbers, Johann-Peter Melder, Gerd Haderlein, Norbert Gutfrucht
  • Publication number: 20110060166
    Abstract: The present invention relates to a process for preparing N,N-substituted 1,3-propanediamine by a) reacting secondary amine with acrolein at a temperature of from (?50) to 100° C. and a pressure of from 0.01 to 300 bar, and b) reacting the reaction mixture obtained in stage a) with hydrogen and ammonia in the presence of a hydrogenation catalyst at a temperature of from 40 to 400° C. and a pressure of from 1 to 400 bar, wherein the molar ratio of secondary amine to acrolein in stage a) is 2:1 or more and the hydrogenation catalyst used in stage b) comprises cobalt. In a preferred embodiment, acrolein which has been obtained from glycerol based on renewable raw materials is used. The invention further relates to the use of N,N-dimethyl-1,3-propanediamine (DMAPA) based on renewable raw materials as a feedstock for lubricant soaps and other detergents, coagulants, polymers and comb polymers. In a further preferred embodiment, stage b) is performed in the presence of water.
    Type: Application
    Filed: May 11, 2009
    Publication date: March 10, 2011
    Applicant: BASF SE
    Inventors: Martin Ernst, Johann-Peter Melder, Christof Wilhelm Wigbers