Patents by Inventor Jens Scheidel

Jens Scheidel 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: 11001730
    Abstract: The present invention relates to a novel process for preparing isocyanurate-comprising polyisocyanates of (cyclo)aliphatic diisocyanates that are especially stable to color drift in solvents.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: May 11, 2021
    Inventors: Harald Schaefer, Daniel Flojhar, Jens Scheidel, Thomas Genger, Matthias Kroner, Sebastian Emmerling, Guillermo Arens
  • Publication number: 20200262968
    Abstract: The present invention relates to a new process for preparing polyisocyanates containing isocyanurate groups and being flocculation-stable in solvents from (cyclo)aliphatic diisocyanates.
    Type: Application
    Filed: October 2, 2017
    Publication date: August 20, 2020
    Applicant: BASF SE
    Inventors: Harald SCHAEFER, Daniel FLOJHAR, Jens SCHEIDEL, Thomas GENGER, Sebastina EMMERLING, Matthias KRONER, Guillermo ARENS
  • Publication number: 20200181449
    Abstract: The present invention relates to a novel process for preparing isocyanurate-comprising polyisocyanates of (cyclo)aliphatic diisocyanates that are especially stable to color drift in solvents.
    Type: Application
    Filed: October 2, 2017
    Publication date: June 11, 2020
    Applicant: BASF SE
    Inventors: Harald SCHAEFER, Daniel FLOJHAR, Jens SCHEIDEL, Thomas GENGER, Matthias KRONER, Sebastian EMMERLING, Guillermo ARENS
  • Patent number: 9493405
    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) dis
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: November 15, 2016
    Assignee: BASF SE
    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: 20160168082
    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) dis
    Type: Application
    Filed: November 13, 2015
    Publication date: June 16, 2016
    Inventors: Tim Jungkamp, Robert BAUMANN, Michael BARTSCH, Gerd HADERLEIN, Hermann LUYKEN, Jens SCHEIDEL, Tobias AECHTNER, Peter PFAB, Petra DECKERT, Wolfgang SIEGEL, Peter BASSLER
  • Patent number: 8679436
    Abstract: Process for working up an exhaust gas from a system for producing hydroxylamine or hydroxylammonium salts by catalytic reduction of nitrogen monoxide with hydrogen, the exhaust gas containing nitrogen monoxide, hydrogen, dinitrogen monoxide, nitrogen and ammonia. At least some of the hydrogen present in the exhaust gas is separated off from the exhaust gas by means of a gas-tight membrane-electrode assembly which comprises at least one selectively proton-conducting membrane, a retentate side, a permeate side, and, on each side of the membrane, at least one electrode catalyst, wherein, on the retentate side of the membrane, at least some of the hydrogen is oxidized to protons at the anode catalyst and the protons, after crossing the membrane, are, on the permeate side, at the cathode catalyst according to (I) reduced to hydrogen and/or (II) reacted with oxygen to form water, the oxygen originating from an oxygen-containing stream which is contacted with the permeate side.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: March 25, 2014
    Assignee: BASF SE
    Inventors: Arnd Garsuch, Alexander Panchenko, Sigmar Bräuninger, Jens Scheidel, Alfred Thome
  • Patent number: 8642826
    Abstract: A process for long-term operation of a continuous heterogeneously catalyzed partial dehydrogenation of a hydrocarbon to be dehydrogenated, in which a reaction gas mixture stream comprising the hydrocarbon to be dehydrogenated in a molar starting amount KW is conducted through an overall catalyst bed comprising the total amount M of dehydrogenation catalyst and the deactivation of the overall catalyst bed is counteracted in such a way that, with increasing operating time, the contribution to the conversion in the first third of the total amount M of dehydrogenation catalyst in flow direction decreases, the contribution to the conversion in the last third of the total amount M of dehydrogenation catalyst in flow direction increases, and the contribution to the conversion in the second third of the total amount M of dehydrogenation catalyst in flow direction passes through a maximum.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: February 4, 2014
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Dieterle, Catharina Klanner, Götz-Peter Schindler, Klaus Joachim Müller-Engel, Jens Scheidel, Christoph Adami
  • Publication number: 20130183222
    Abstract: A process for working up an exhaust gas A from a system for producing hydroxylamine or hydroxylammonium salts by catalytic reduction of nitrogen monoxide with hydrogen, wherein the exhaust gas A comprises nitrogen monoxide, hydrogen, dinitrogen monoxide, nitrogen and ammonia, and at least some of the hydrogen present in the exhaust gas A is separated off from the exhaust gas A by means of a gas-tight membrane-electrode assembly which comprises at least one selectively proton-conducting membrane, a retentate side, a permeate side, and, on each side of the membrane, at least one electrode catalyst, wherein, on the retentate side of the membrane, at least some of the hydrogen is oxidized to protons at the anode catalyst and the protons, after crossing the membrane, are, on the permeate side, at the cathode catalyst according to I reduced to hydrogen and/or II reacted with oxygen to form water, wherein the oxygen originates from an oxygen-comprising stream O which is contacted with the permeate side.
    Type: Application
    Filed: September 27, 2011
    Publication date: July 18, 2013
    Applicant: BASF SE
    Inventors: Arnd Garsuch, Alexander Panchenko, Sigmar Bräuninger, Jens Scheidel, Alfred Thome
  • Patent number: 8410299
    Abstract: A method for producing 3-pentenenitrile is provided that includes: (a) isomerizing an educt stream containing 2-methyl-3-butenenitrile on at least one dissolved or dispersed isomerization catalyst to form a stream (1), which contains the isomerization catalyst(s), 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile; (b) distilling the stream (1) to obtain a stream (2) as the overhead product, which contains 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile and a stream (3) as the bottom product, which contains the isomerization catalyst(s); (c) distilling the stream (2) to obtain a stream (4) as the overhead product, which is enriched with (Z)-2-methyl-2-butenenitrile in comparison to stream (2), and a stream (5) as the bottom product, which is enriched with 3-pentenenitrile and 2-methyl-3-butenenitrile in comparison to stream (2); (d) distilling stream (5) to obtain a stream (6) as the bottom product, which contains 3-pentenenitrile and a stream (7) as the he
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: April 2, 2013
    Assignee: BASF SE
    Inventors: Tim Jungkamp, Robert Baumann, Michael Bartsch, Gerd Haderlein, Hermann Luyken, Jens Scheidel, Tobias Aechtner, Peter Pfab, Petra Deckert, Wolfgang Siegel, Peter Baβler
  • Patent number: 8278474
    Abstract: A process is described for separating mixtures of isomeric pentenenitriles, in which at least one isomer is removed from the mixture, wherein the separation of the substance mixtures of isomeric pentenenitriles is effected distillatively under reduced pressure.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: October 2, 2012
    Assignee: BASF Aktiengesellschaft
    Inventors: Tim Jungkamp, Robert Baumann, Michael Bartsch, Gerd Haderlein, Hermann Luyken, Jens Scheidel
  • Publication number: 20120178958
    Abstract: A method for producing 3-pentenenitrile is provided that includes: (a) isomerizing an educt stream containing 2-methyl-3-butenenitrile on at least one dissolved or dispersed isomerisation catalyst to form a stream (1), which contains the isomerisation catalyst(s), 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile; (b) distilling the stream (1) to obtain a stream (2) as the overhead product, which contains 2-methyl-3-butenenitrile, 3-pentenenitrile and (Z)-2-methyl-2-butenenitrile and a stream (3) as the bottom product, which contains the isomerisation catalyst(s); (c) distilling the stream (2) to obtain a stream (4) as the overhead product, which is enriched with (Z)-2-methyl-2-butenenitrile in comparison to stream (2), and a stream (5) as the bottom product, which is enriched with 3-pentenenitrile and 2-methyl-3-butenenitrile in comparison to stream (2); (d) distilling stream (5) to obtain a stream (6) as the bottom product, which contains 3-pentenenitrile and a stream (7) as the he
    Type: Application
    Filed: January 30, 2012
    Publication date: July 12, 2012
    Applicant: BASF SE*
    Inventors: Tim Jungkamp, Robert Baumann, Michael Bartsch, Gerd Haderlein, Hermann Luyken, Jens Scheidel, Tobias Aechtner, Peter Pfab, Petra Deckert, Wolfgang Siegel, Peter Baßler
  • Patent number: 8058466
    Abstract: An process for preparing 3-pentenenitrile by hydrocyanating 1,3-butadiene, in which the process yield with regard to recycled 1,3-butadiene is maximized.
    Type: Grant
    Filed: August 1, 2007
    Date of Patent: November 15, 2011
    Assignee: BASF SE
    Inventors: Gerd Haderlein, Tobias Aechtner, Andreas Leitner, Hermann Luyken, Peter Pfab, Jens Scheidel, Andrea Haunert, Thomas Genger
  • Publication number: 20110166377
    Abstract: A process is described for separating mixtures of isomeric pentenenitriles, in which at least one isomer is removed from the mixture, wherein the separation of the substance mixtures of isomeric pentenenitriles is effected distillatively under reduced pressure.
    Type: Application
    Filed: March 14, 2011
    Publication date: July 7, 2011
    Applicant: BASF SE
    Inventors: Tim Jungkamp, Robert Baumann, Michael Bartsch, Gerd Haderlein, Hermann Luyken, Jens Scheidel
  • Patent number: 7935229
    Abstract: A process for extractively removing homogeneously dissolved catalysts from a reaction effluent of a hydrocyanation of unsaturated mononitriles to dinitriles with a hydrocarbon H, including performing the steps of a) concentrating the reaction effluent before step b) by distillation at pressures of from 0.1 to 5000 mbar and temperatures of from 10 to 150° C., b) adding a hydrocarbon H to the concentrated reaction effluent to obtain a stream I, and c) feeding stream I, without prior separation of the liquid phases, into an extraction apparatus and extracting it at a temperature T with the hydrocarbon H to obtain a stream II comprising the hydrocarbon H enriched with the catalyst and a stream III having a low catalyst content.
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: May 3, 2011
    Assignee: BASF SE
    Inventors: Petra Deckert, Peter Bassler, Michael Bartsch, Gerd Haderlein, Hermann Luyken, Jens Scheidel, Peter Pfab, Tobias Aechtner, Wolfgang Siegel
  • Patent number: 7851656
    Abstract: Method of producing compounds of the general formula XPR2(OR1)??Ia where X is chlorine, bromine or iodine and R1 is an organic radical, by reacting compounds of the general formula X2PR2??II, in which X has the meaning given above and R2 is an organic radical, with compounds of the general formula R1OH??III, in which R1 has the meaning given above, to give a mixture IV, in that a) the postreaction is carried out at a temperature of from 50 to 240° C. and a pressure of from 0.001 to 0.9 bar, b) from the mixture IV the compounds Ia are separated off from the compounds PR2(OR1)2??Ib and, if appropriate, the compounds II and c) compounds Ib and, if appropriate, unreacted compounds II are returned to the synthesis stage.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: December 14, 2010
    Assignee: BASF SE
    Inventors: Robert Baumann, Tobias Aechtner, Wolfgang Siegel, Hermann Luyken, Peter Pfab, Jens Scheidel, Andreas Leitner, Andreas Glass
  • Patent number: 7816551
    Abstract: An adiponitrile/methylglutaronitrile preparation process includes distilling a reaction stream to obtain stream 3 depleted in pentenenitriles (bottom product) and stream 4 enriched in pentenenitriles (top product); extracting stream 3 obtaining stream 6 enriched with extractant (top product) and stream 7 depleted in extractant (bottom product); distilling stream 6 obtaining stream 8 comprising the catalyst (bottom product) and stream 9 comprising the extractant (top product); distilling stream 7 obtaining stream 10 (bottom product) and stream 11 comprising the extractant (top product); distilling stream 10 obtaining stream 12 comprising catalyst degradation products, at least one promotor, adiponitrile and methylglutaronitrile (bottom product) and stream 13 comprising pentenenitriles (top product); distilling stream 12 obtaining stream 14 comprising catalyst degradation products and the promotor(s) (bottom product) and stream 15 comprising adiponitrile and methylglutaronitrile (top product); distilling stream
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: October 19, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Tim Jungkamp, Robert Baumann, Michael Bartsch, Gerd Haderlein, Hermann Luyken, Jens Scheidel
  • Patent number: 7781608
    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: Grant
    Filed: January 27, 2005
    Date of Patent: August 24, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Jens Scheidel, Tim Jungkamp, Michael Bartsch, Gerd Haderlein, Robert Baumann, Hermann Luyken
  • Patent number: 7737310
    Abstract: A process for preparing biphenols of the general formula I by reaction of monophenols of the general formula II where the radicals R1, R2 and R3 are each, independently of one another, hydrogen, alkyl, aryl or arylalkyl having from 1 to 10 carbon atoms, in the presence of an oxidant in a reactor, wherein a) the reactor comprises no stationary internals which act as baffles, b) a total of not more than 0.6 mol of oxidant is used per one mol of monophenol, and c) the oxidant is introduced either continuously or discontinuously in a plurality of portions over a period of from 10 minutes to 24 hours, with the amount of oxidant introduced per unit time not being constant over the total period of time but instead being varied.
    Type: Grant
    Filed: April 5, 2006
    Date of Patent: June 15, 2010
    Assignee: BASF SE
    Inventors: Michael Bartsch, Gerd Haderlein, Tobias Aechtner, Jens Scheidel, Christian Dienes, Alexander Tempel, Thorsten Hofrichter, Werner Weinle
  • Patent number: 7709675
    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: Grant
    Filed: January 27, 2005
    Date of Patent: May 4, 2010
    Assignee: BASF SE
    Inventors: Michael Bartsch, Robert Baumann, Gerd Haderlein, Jens Scheidel, Tim Jungkamp, Hermann Luyken
  • Patent number: 7705171
    Abstract: A process for preparing nickel(0)-phosphorus ligand complexes comprising at least one nickel(0) central atom and at least one phosphorus ligand by reacting a nickel(II) compound with a reducing agent in the presence of the ligand to give a reaction mixture, wherein a) the molar reducing agent:nickel(II) compound ratio in the reaction is from 1:1 to 1000:1, calculated as the molar ratio of the redox equivalents, b) the molar phosphorus ligand:nickel(II) compound ratio in the reaction is not more than 30:1, calculated as the molar P atoms:Ni atoms ratio, c) the nickel(0) content in the resulting reaction mixture is not more than 1.3% by weight and d) the resulting reaction mixture is extracted by adding at least one dinitrile and at least one hydrocarbon to form at least two immiscible phases.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: April 27, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerd Haderlein, Tobias Aechtner, Andreas Leitner, Peter Pfab, Hermann Luyken, Jens Scheidel