Patents by Inventor Michael Bartsch

Michael Bartsch 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: 7671229
    Abstract: A process is described for hydrocyanating 1,3-butadiene over at least one nickel(0) complex having phosphorus ligands as a catalyst, wherein the 1,3-butadiene is used in a mixture with n-butane and the mixture contains from 60 to 90% by volume of 1,3-butadiene and from 40 to 10% by volume of n-butane.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: March 2, 2010
    Assignee: BASF SE
    Inventors: Michael Bartsch, Robert Baumann, Gerd Haderlein, Götz-Peter Schindler, Tim Jungkamp, Hermann Luyken, Jens Scheidel, Andreas Brodhagen
  • Publication number: 20090280544
    Abstract: The present invention relates to a method for the enantioselective acylation of trans-2-benzyloxycyclohexylamine or cis-2-benzyloxycyclohexylamine, according to which an enantiomer mixture of 2-benzyloxycyclohexylamine is reacted with an acylation agent in the presence of a hydrolase. The invention also relates to a method for producing optically active trans-stereoisomers of 2-benzyloxycyclohexylamine.
    Type: Application
    Filed: September 12, 2007
    Publication date: November 12, 2009
    Applicant: BASF SE
    Inventors: Klaus Ditrich, Ute Reuther, Michael Bartsch
  • Patent number: 7612224
    Abstract: A process is described for isomerizing pentenenitrile in a reactant stream, wherein the isomerization is effected over a heterogeneous catalyst in a distillation column in such a way that, during the isomerization of the isomerization reactant, it is distillatively depleted in relation to the isomerization product in the reaction column of the distillation column.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: November 3, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Jens Scheidel, Tim Jungkamp, Michael Bartsch, Gerd Haderlein, Robert Baumann, Hermann Luyken
  • Publication number: 20090270645
    Abstract: A process for extractively removing nickel(0) complexes having phosphorus ligands from a reaction effluent of a hydrocyanation of unsaturated mononitriles to dinitriles by extraction by means of a hydrocarbon, a phase separation of the hydrocarbon and of the nitrile-containing solution into two phases being effected, by feeding at least one polar additive to the hydrocyanation effluent (feedstream) and/or to the extraction stage.
    Type: Application
    Filed: March 28, 2007
    Publication date: October 29, 2009
    Applicant: BASF SE
    Inventors: Gerd Haderlein, Tobias Aechtner, Michael Bartsch, Hermann Luyken, Peter Pfab, Jens Scheidel, Andreas Leitner
  • Patent number: 7566800
    Abstract: The invention relates to a method for isomerization of pentene nitrile in an educt flow, wherein isomerization is performed on a homogeneously dissolved catalyst.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: July 28, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Jens Scheidel, Christian Miller, Robert Baumann, Tim Jungkamp, Michael Bartsch, Gerd Haderlein, Hermann Luyken, Wolfgang Siegel, Peter Bassler
  • Publication number: 20090187039
    Abstract: A process is described for preparing 3-pentenenitrile by hydrocyanating 1,3-butadiene, wherein 1,3-butadiene is reacted with hydrogen cyanide in the presence of at least one catalyst and the stream resulting therefrom is purified distillatively, the bottom temperature during the distillation not exceeding 140° C.
    Type: Application
    Filed: January 27, 2005
    Publication date: July 23, 2009
    Applicant: BASF Aktiengesellschaft
    Inventors: Jens Scheidel, Tim Jungkamp, Michael Bartsch, Gerd Haderlein, Robert Baumann, Hermann Luyken
  • Patent number: 7550407
    Abstract: A system which is suitable as a catalyst for the hydrocyanation of olefinically unsaturated compounds and comprises a) Ni(0) b) a compound which complexes Ni(0) as a ligand and contains trivalent phosphorus, c) a Lewis acid and d) a compound of the formula M Rn where M: Al or Ti R: identical or different monovalent alkoxy radicals, in which case a plurality of alkoxy radicals may be bonded together, and additionally, in the case that M=Al, R may be identical or different monovalent alkyl radicals, in which case a plurality of alkyl radicals may be bonded together or one or more alkyl radicals may be bonded to one or more of the abovementioned alkoxy radicals, n: valency of M, and processes for hydrocyanating an olefinically unsaturated compound in the presence of such a system.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: June 23, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Bartsch, Robert Baumann, Gerd Haderlein, Miquel Angel Flores, Tim Jungkamp, Hermann Luyken, Jens Scheidel, Wolfgang Siegel, Ferenc Molnar
  • Patent number: 7541486
    Abstract: A process is described for preparing 3-pentenenitrile, characterized by the following process steps: (a) reacting 1,3-butadiene with hydrogen cyanide over at least one catalyst to obtain a stream 1 which comprises 3-pentenenitrile, 2-methyl-3-butenenitrile, the at least one catalyst and 1,3-butadiene, (b) distilling stream 1 in a column to obtain a high-1,3-butadiene stream 2 as the top product and a low-1,3-butadiene stream 3 as the bottom product which comprises 3-pentenenitrile, the at least one catalyst and 2-methyl-3-butenenitrile, (c) distilling stream 3 in a column to obtain a stream 4 as the top product which comprises 1,3-butadiene, a stream 5 which comprises 3-pentenenitrile and 2-methyl-3-butenenitrile at a side draw of the column, and a stream 6 as the bottom product which comprises the at least one catalyst, (d) distilling stream 5 to obtain a stream 7 as the top product which comprises 2-methyl-3-butenenitrile, and a stream 8 as the bottom product which comprises 3-pentenenitrile.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: June 2, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Jens Scheidel, Tim Jungkamp, Michael Bartsch, Gerd Haderlein, Robert Baumann, Hermann Luyken
  • Patent number: 7538240
    Abstract: A process is described for preparing 3-pentenenitrile by hydrocyanating 1,3-butadiene in the presence of at least one catalyst, wherein the reaction is carried out in a loop reactor having external pumped circulation and jet nozzle for driving the internal circulation.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: May 26, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Tim Jungkamp, Robert Baumann, Michael Bartsch, Gerd Haderlein, Hermann Luyken, Jens Scheidel
  • Patent number: 7528275
    Abstract: A process is described for preparing adiponitrile by hydrocyanating 1,3-butadiene over a catalyst, by, in a first process step, hydrocyanating 1,3-butadiene to 3-pentenenitrile over at least one nickel(0) catalyst, and, in a second process step, hydrocyanating 3-pentenenitrile to adiponitrile over at least one nickel(0) catalyst with addition of at least one Lewis acid, wherein at least one of the at least one nickel(0) catalysts used in the particular process steps is transferred into the other process step.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: May 5, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Bartsch, Robert Baumann, Gerd Haderlein, Miguel Angel Flores, Tim Jungkamp, Hermann Luyken, Jens Scheidel, Wolfgang Siegel
  • Patent number: 7521575
    Abstract: The invention relates to phosphinite phosphites I of formula 1, 2, 3, 4, 5 or 6 and mixtures thereof, wherein R1, R2, R4 independently represent an alkyl or alkylene group with 1 to 8 carbon atoms, provided that at least one of the groups R1, R2, R4 is different from H; R5 to R22 independently represent H, an alkyl or alkylene group with 1 to 8 carbon atoms; R3 is H, methyl or ethyl; X is F, Cl or CF3, if n=1 or 2 and X is H, if n=0.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: April 21, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Bartsch, Robert Baumann, Gerd Haderlein, Miquel Angel Flores, Tim Jungkamp, Hermann Luyken, Jens Scheidel, Wolfgang Siegel
  • Patent number: 7504529
    Abstract: A process is described for removing hydrogen cyanide from mixtures comprising pentenenitrile, wherein the removal is effected by an azeotropic distillation of hydrogen cyanide with 1,3-butadiene.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: March 17, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Tim Jungkamp, Hans-Martin Polka, Robert Baumann, Michael Bartsch, Gerd Haderlein, Hermann Luyken, Jens Scheidel
  • Patent number: 7462263
    Abstract: A process for dewatering hydrocyanic acid by distillation, which includes distilling crude hydrocyanic acid containing from 50 to 99.9% by weight of HCN, from 0.1 to 40% by weight of water, from 0 to 15% by weight of carbon oxides and optionally from 0.01 to 1% by weight of an involatile stabilizer, at a pressure of from 1 bar to 2.5 bar, a bottom temperature of from 100° C. to 130° C. and a top temperature of from 25° C. to 54° C., in the absence of a volatile stabilizer, in a distillation column to obtain a top draw stream containing purified, anhydrous hydrocyanic acid and carbon oxides and a bottom draw stream including water and, optionally, the involatile stabilizer.
    Type: Grant
    Filed: April 15, 2004
    Date of Patent: December 9, 2008
    Inventors: Michael Bartsch, Robert Baumann, Gerd Haderlein, Miquel Angel Flores, Tim Jungkamp, Hermann Luyken, Jens Scheidel, Wolfgang Siegel, Dagmar Pascale Kunsmann-Keitel, Peter Bassler
  • Publication number: 20080281119
    Abstract: A process for extractively removing nickel(0) complexes having phosphorus ligands and/or free phosphorus ligands from a reaction effluent of a hydrocyanation of unsaturated mononitriles to dinitriles by extraction by means of a hydrocarbon, a phase separation of the hydrocarbon and of the reaction effluent into two phases being effected at a temperature T (in ° C.), wherein the content of nickel(0) complexes having phosphorus ligands and/or free phosphorus ligands in the reaction effluent of the hydrocyanation, depending on the temperature T, is at least y % by weight and, irrespective of the temperature T, is a maximum of 60% by weight, where the numerical value of the minimum content y is given by the equation y=0.5·T+20 and T is to be used in the equation as a dimensionless numerical value.
    Type: Application
    Filed: January 27, 2005
    Publication date: November 13, 2008
    Applicant: BASF Aktiengesellschaft
    Inventors: Jens Scheidel, Tim Jungkamp, Michael Bartsch, Gerd Haderlein, Robert Baumann, Hermann Luyken, Petra Deckert, Peter Pfab, Wolfgang Siegel, Tobias Aechtner
  • Publication number: 20080281120
    Abstract: A process is described for preparing 3-pentenenitrile, characterized by the following process steps: (a) isomerizing a reactant stream which comprises 2-methyl-3-butenenitrile over at least one dissolved or dispersed isomerization catalyst to give a stream 1 which comprises the at least one isomerization catalyst, 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile, (b) distilling stream 1 to obtain a stream 2 as the top product which comprises 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile, and a stream 3 as the bottom product which comprises the at least one isomerization catalyst, (c) distilling stream 2 to obtain a stream 4 as the top product which, compared to stream 2, is enriched in (Z)-2-methyl-2-butenenitrile, based on the sum of all pentenenitriles in stream 2, and a stream 5 as the bottom product which, compared to stream 2, is enriched in 3-pentenenitrile and 2-methyl-3-butenenitrile, based on the sum of all pentenenitriles in stream 2, (d) di
    Type: Application
    Filed: January 27, 2005
    Publication date: November 13, 2008
    Applicant: BASF AKTIENGESELLSCHAFT
    Inventors: Tim Jungkamp, Robert Baumann, Michael Bartsch, Gerd Haderlein, Hermann Luyken, Jens Scheidel, Tobias Aechtner, Peter Pfab, Petra Deckert, Wolfgang Siegel, Peter Bassler
  • Publication number: 20080275266
    Abstract: A process is described for hydrocyanating 1,3-butadiene over at least one nickel(0) complex having phosphorus ligands as a catalyst, wherein the 1,3-butadiene is used in a mixture with n-butane and the mixture contains from 60 to 90% by volume of 1,3-butadiene and from 40 to 10% by volume of n-butane.
    Type: Application
    Filed: January 27, 2005
    Publication date: November 6, 2008
    Applicant: BASF AKTIENGESELLSCHAFT
    Inventors: Michael Bartsch, Robert Baumann, Gerd Haderlein, Gotz-Peter Schindler, Tim Jungkamp, Hermann Luyken, Jens Scheidel, Andreas Brodhagen
  • Patent number: 7439381
    Abstract: A process is described for preparing 3-pentenenitrile by hydrocyanating 1,3-butadiene with hydrogen cyanide over at least one catalyst, wherein the 1,3-butadiene and/or hydrogen cyanide is contacted with at least one microporous solid before the reaction.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: October 21, 2008
    Assignee: BASF SE
    Inventors: Tim Jungkamp, Dagmar Pascale Kunsmann-Keitel, Michael Bartsch, Robert Baumann, Gerd Haderlein, Hermann Luyken, Jens Scheidel
  • Publication number: 20080242886
    Abstract: A process is described for continuously hydrocyanating 1,3-butadiene in the presence of at least one nickel(0) catalyst with chelate ligands, wherein 1,3-butadiene and hydrogen cyanide are used in a molar ratio of from 1.6:1 to 1.1:1.
    Type: Application
    Filed: January 27, 2005
    Publication date: October 2, 2008
    Applicant: BASF Aktiengesellschaft
    Inventors: Michael Bartsch, Robert Baumann, Gerd Haderlein, Jens Scheidel, Tim Jungkamp, Hermann Luyken
  • Publication number: 20080242885
    Abstract: A process is described for removing hydrogen cyanide from mixtures comprising pentenenitrile, wherein the removal is effected by an azeotropic distillation of hydrogen cyanide with 1,3-butadiene.
    Type: Application
    Filed: January 26, 2005
    Publication date: October 2, 2008
    Applicant: BASF Aktiengesellschaft
    Inventors: Tim Jungkamp, Hans-Martin Polka, Robert Baumann, Michael Bartsch, Gerd Haderlein, Hermann Luyken, Jens Scheidel
  • Publication number: 20080242883
    Abstract: A process is described for preparing 3-pentenenitrile by hydrocyanating 1,3-butadiene in the presence of at least one catalyst, wherein the reaction is carried out in a loop reactor having external pumped circulation and jet nozzle for driving the internal circulation.
    Type: Application
    Filed: January 27, 2005
    Publication date: October 2, 2008
    Applicant: BASF Akteingesellschaft
    Inventors: Tim Jungkamp, Robert Baumann, Michael Bartsch, Gerd Haderlein, Hermann Luyken, Jens Scheidel