Patents by Inventor Wolfgang Mackenroth
Wolfgang Mackenroth 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).
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Publication number: 20090023956Abstract: A process for aminating hydrocarbons with ammonia in the presence of catalyst (i) which catalyzes the amination, which comprises supplying oxidizing agent to the reaction mixture and reacting the oxidizing agent with hydrogen which is formed in the amination in the presence of a catalyst (ii) which catalyzes this reaction with hydrogen.Type: ApplicationFiled: February 15, 2007Publication date: January 22, 2009Applicant: BASF SEInventors: Frederik van Laar, Ekkehard Schwab, Joachim-Thierry Anders, Sven Crone, Karl Holemann, Wolfgang Mackenroth, Petr Kubanek
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Patent number: 7468461Abstract: The present invention provides a process for hydrogenating aromatic nitro compounds to the corresponding amines in the presence of hydrogenation catalysts, which comprises using hydrogenation catalysts in which nickel and platinum are present on a support in the form of an alloy having an atomic ratio of nickel to platinum in the alloy of between 30:70 and 70:30.Type: GrantFiled: March 28, 2008Date of Patent: December 23, 2008Assignee: BASF AktiengesellschaftInventors: Frederik Van Laar, Ekkehard Schwab, Steffen Oehlenschlaeger, Hartwig Voss, Wolfgang Mackenroth, Konrad Morgenschweis, Ulrich Penzel, Bernd Weidner
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Publication number: 20080242537Abstract: The invention provides a process for preparing aromatic amines by catalytically hydrogenating the corresponding nitro compounds, especially for preparing tolylenediamine by hydrogenating dinitrotoluene, which comprises using hydrogenation catalysts in which the active component present is a mixture of platinum, nickel and an additional metal on a support.Type: ApplicationFiled: August 21, 2006Publication date: October 2, 2008Applicant: BASF SEInventors: Petr Kubanek, Ekkehard Schwab, Frederik van Laar, Wolfgang Mackenroth
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Publication number: 20080242900Abstract: The invention relates to a method for producing dinitrotoluene, comprising the steps of a) reacting toluene with nitric acid in the presence of sulphuric acid to give mononitrotoluene, b) separating the reaction product of step a) into a mononitrotoluene-containing organic phase and a sulphuric acid-containing aqueous phase, c) reacting the mononitrotoluene-containing organic phase with nitric acid in the presence of sulphuric acid to give dinitrotoluene, d) separating the reaction product of step c) into a dinitrotoluene-containing organic phase and a sulphuric-acid containing aqueous phase, whereby the reaction product of step a) contains 3.0 to 8 wt % of toluene, in relation to the organic phase, and 0.1 to 1.2 wt. % of nitric acid, in relation to the aqueous phase and the phase separation of step b) is carried out in such a manner that further reaction of toluene with nitric acid is prevented.Type: ApplicationFiled: February 2, 2005Publication date: October 2, 2008Applicant: BASF AktiengesellschaftInventors: Johannes Buttner, Wolfgang Mackenroth, Heinrich Hermann, Peter Konieczny, Jurgen Gebauer
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Publication number: 20080177111Abstract: The present invention provides a process for hydrogenating aromatic nitro compounds to the corresponding amines in the presence of hydrogenation catalysts, which comprises using hydrogenation catalysts in which nickel and platinum are present on a support in the form of an alloy having an atomic ratio of nickel to platinum in the alloy of between 30:70 and 70:30.Type: ApplicationFiled: March 28, 2008Publication date: July 24, 2008Applicant: BASF AktiengesellschaftInventors: Frederik van Laar, Ekkehard Schwab, Steffen Oehlenschlager, Hartwig Voss, Wolfgang Mackenroth, Konrad Morgenschweis, Ulrich Penzel, Bernd Weidner
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Publication number: 20080146846Abstract: The invention relates to a process for preparing nitrogen-containing catalysts, comprising: a) preparation of an oxidic species comprising the following components: at least one metal M selected from groups Ib to VIIb and VIII of the Periodic Table of the Elements, it being possible for the same metal to be present in different oxidation states; if appropriate one or more promoters P selected from groups Ib to VIIb and VIII of the Periodic Table of the Elements, the lanthanides, and from groups IIIa to VIa of the Periodic Table of the Elements, excluding oxygen and sulfur; if appropriate one or more elements R selected from hydrogen, alkali metals and alkaline earth metals; if appropriate one or more elements Q selected from chloride and sulfate; oxygen, the molar proportion of oxygen being determined by the valency and frequency of the elements in the oxidic species other than other oxygen; b) reaction of the oxidic species with an amine component selected from ammonia, primary and secondary amines andType: ApplicationFiled: December 20, 2005Publication date: June 19, 2008Applicant: BASF AktiengesellschaftInventors: Harald Dialer, Matthias Frauenkron, Holger Evers, Ekkehard Schwab, Johann-Peter Melder, Frank Rosowski, Frederik Van Laar, Joachim-Thierry Anders, Sven Crone, Wolfgang Mackenroth
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Patent number: 7342134Abstract: The invention relates to a process for distillatively preparing TDA from a reactant stream comprising TDA, high boilers and low boilers in a dividing wall column in which a dividing wall is disposed in the longitudinal direction of the column to form an upper combined column region (2), a lower combined column region (3), a feed section (4) having a rectifying section (5) and stripping section (6), and also a withdrawal section (7) having a rectifying section (9) and stripping section (8), which comprises the following steps: a. feeding the reactant stream (13) into the feed section (4) of the dividing wall column (1); b. drawing off a low boiler fraction via the top of the column (11); c. drawing off TDA via a side draw (14) in the withdrawal section (7) of the dividing wall column (1); d. drawing off a low boiler fraction via the bottom of the column (12).Type: GrantFiled: January 7, 2005Date of Patent: March 11, 2008Assignee: BASF AktiengesellschaftInventors: Carsten Knoesche, Martin Sohn, Ulrich Penzel, Hans-Juergen Pallasch, Gunter Georgi, Wolfgang Mackenroth, Hans Volkmar Schwarz, Stefan Maixner, Gerald Molz, Eckhard Stroefer
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Publication number: 20070149814Abstract: The present invention provides a process for hydrogenating aromatic nitro compounds to the corresponding amines in the presence of hydrogenation catalysts, which comprises using hydrogenation catalysts in which nickel and platinum are present on a support in the form of an alloy having an atomic ratio of nickel to platinum in the alloy of between 30:70 and 70:30.Type: ApplicationFiled: October 15, 2004Publication date: June 28, 2007Applicant: BASF AktiengesellschaftInventors: Frederik van Laar, Ekkehard Schwab, Steffen Oehlenschlager, Hartwig Voss, Wolfgang Mackenroth, Konrad Morgenschweis, Ulrich Penzel, Bernd Weidner
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Publication number: 20070083065Abstract: The invention relates to a process for distillatively preparing TDA from a reactant stream comprising TDA, high boilers and low boilers in a dividing wall column in which a dividing wall is disposed in the longitudinal direction of the column to form an upper combined column region (2), a lower combined column region (3), a feed section (4) having a rectifying section (5) and stripping section (6), and also a withdrawal section (7) having a rectifying section (9) and stripping section (8), which comprises the following steps: a. feeding the reactant stream (13) into the feed section (4) of the dividing wall column (1); b. drawing off a low boiler fraction via the top of the column (11); c. drawing off TDA via a side draw (14) in the withdrawal section (7) of the dividing wall column (1); d. drawing off a low boiler fraction via the bottom of the column (12).Type: ApplicationFiled: January 7, 2005Publication date: April 12, 2007Applicant: BASF AKTIENGESELLSCHAFTInventors: Carsten Knoesche, Martin Sohn, Ulrich Penzel, Hans-Jurgen Pallach, Gunter Georgi, Wolfgang Mackenroth, Hans Schwarz, Stefan Maixner, Gerald Molz, Eckhard Stroefer
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Publication number: 20060252960Abstract: The invention relates to a process for preparing polyisocyanates by reacting organic amines with phosgene, wherein the reaction is carried out in at least three stages, with the first stage being carried out in a mixing apparatus, the second stage in at least one residence apparatus and the third stage in at least one separation apparatus and the pressure in each successive stage being lower than that in the previous stage.Type: ApplicationFiled: December 13, 2003Publication date: November 9, 2006Applicant: BASF AKTIENGESELLSCHAFTInventors: Martin Sohn, Eckhard Stroefer, Filip Nevejans, Ulrich Penzel, Has-Juergen Pallasch, Rene Leuthold, Andreas Brodhagen, Andreas Woelfert, Wolfgang Mackenroth, Markus Maurer
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Patent number: 7091383Abstract: The invention provides a process for preparing amines by catalytic hydrogenation of nitroaromatics and subsequent removal of the catalysts from the reaction mixture, which contains at least one aromatic amine and water, which comprises carrying out the removal of the catalysts by means of membrane filtration, which is carried out at a pressure on the suspension side of from 5 to 50 bar, a pressure difference between the suspension side and the permeate side of at least 0.3 bar and a flux rate on the suspension side of from 1 to 6 m/s.Type: GrantFiled: January 30, 2003Date of Patent: August 15, 2006Assignee: BASF AktiengesellschaftInventors: Dominic Vanoppen, Ekkehard Schwab, Frederick van Laar, Hartwig Voss, Steffen Oehlenschlaeger, Wolfgang Mackenroth, Konrad Morgenschweis, Ulrich Penzel, Bernd Weidner
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Publication number: 20060123842Abstract: The invention relates to a process for the partial or complete separation of a mixture comprising hydrogen chloride and phosgene, possibly solvents and possibly low boilers and inerts as are typically obtained in the preparation of isocyanates by reaction of amines with phosgene, which comprises firstly carrying out a partial or complete condensation of phosgene, then a distillation or stripping step in a column to remove the hydrogen chloride from the bottom product phosgene and subsequently a scrub of the top product hydrogen chloride by means of the process solvent to absorb the phosgene in the process solvent. An after-purification by means of adsorption on activated carbon or by another suitable method can subsequently be carried out to remove solvent residues.Type: ApplicationFiled: December 13, 2003Publication date: June 15, 2006Applicant: BASF AKTINEGESSELSCHAFTInventors: Martin Sohn, Eckhard Stroefer, Filip Nevejans, Ulrich Penzel, Hans-Jurgen Pallasch, Peter Abeel, Filip Deberdt, Jan Jacobs, Wolfgang Mackenroth
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Publication number: 20060089507Abstract: The present invention relates to a process for preparing isocyanates by reaction of amines with phosgene in a reactor and subsequent separation of the isocyanate from the reaction mixture leaving the reactor and purification of the isocyanate, wherein the separation and purification of the isocyanate is carried out in a column having a pressure at the top of 1-950 mbar, preferably 5-50 mbar, particularly preferably 10-20 mbar, and a temperature at the bottom of 90-250° C., preferably 120-170° C., particularly preferably 130-150° C., and the pure isocyanate stream is preferably taken off in liquid or gaseous form at a side offtake of the column.Type: ApplicationFiled: December 13, 2003Publication date: April 27, 2006Applicant: BASF AktiengesellschaftInventors: Martin Sohn, Eckhard Stroefer, Filip Nevejans, Ulrich Penzel, Hans-Jurgen Pallasch, Michael Sander, Hans Schwarz, Wolfgang Mackenroth
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Publication number: 20060011463Abstract: The invention relates to a process for preparing isocyanates by reaction of amines with phosgene in the presence of inert organic solvents in a reactor and subsequent work-up of the reaction mixture leaving the reactor, wherein the solvent is separated off in a two-stage or multistage, preferably two-stage, distillation process in which the solvent is separated off at a pressure of 0.1-15 bar in a first apparatus and at 1-900 mbar in a second apparatus or further apparatuses, with the heat of condensation of the solvent vapor from the first apparatus being used for partial or complete vaporization of solvent in the second apparatus.Type: ApplicationFiled: December 13, 2003Publication date: January 19, 2006Applicant: BASF AktiengesellschaftInventors: Martin Sohn, Eckhard Stroefer, Filip Nevejans, Ulrich Penzel, Hans-Jurgen Pallasch, Peter Van Den Abeel, Filip Deberdt, Jan Jacobs, Wolfgang Mackenroth
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Publication number: 20050177003Abstract: The invention provides a process for preparing amines by catalytic hydrogenation of nitroaromatics and subsequent removal of the catalysts from the reaction mixture, which contains at least one aromatic amine and water, which comprises carrying out the removal of the catalysts by means of membrane filtration, which is carried out at a pressure on the suspension side of from 5 to 50 bar, a pressure difference between the suspension side and the permeate side of at least 0.3 bar and a flux rate on the suspension side of from 1 to 6 m/s.Type: ApplicationFiled: January 30, 2003Publication date: August 11, 2005Inventors: Dominic Vanoppen, Ekkehard Schwab, Frederik Laar, Hartwig Voss, Steffen Oehlenschlager, Wolfgang Mackenroth, Konrad Morgenschweis, Ulrich Penzel
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Patent number: 5599848Abstract: A process for preparing a mixture of 8E,10E-dodecadienol (Ia), 8E,10Z-dodecadienol (Ib), 8Z,10E-dodecadienol (Ic) and 8Z,10Z-dodecadienol (Id),H.sub.3 C--CH.dbd.CH--CH.dbd.CH--(CH.sub.2).sub.6 --CH.sub.2 --OH(8E,10E=Ia)(8E,10Z=Ib)(8Z,10E=Ic)(8Z,10Z=Id)starting from 1,8-octanediol (II) which is converted with a halogenating agent into (III)Hal-CH.sub.2 --(CH.sub.2).sub.6 --CH.sub.2 --OH (III)where (III) is subsequently reacted with (IV),H.sub.2 C.dbd.CH--O--R (IV)to give (V)Hal-CH.sub.2 --(CH.sub.2).sub.6 --CH.sub.2 --O--CH(CH.sub.3)--OR(V),(V) is converted in the presence of magnesium and crotonaldehyde into (VI)H.sub.3 C--CH.dbd.CH--CH(OH)--(CH.sub.2).sub.8 --O--CH(CH.sub.3)--OR(VI)and the protective group R and the hydroxyl group are simultaneously eliminated from (VI) in the presence of acid, novel intermediates for this process, and methods for controlling the codling moth Cydia pomonella by interfering with mating using this mixture are described.Type: GrantFiled: August 7, 1995Date of Patent: February 4, 1997Assignee: BASF AktiengesellschaftInventors: Ulrich Klein, Ulrich Neumann, Wolfgang Mackenroth, Guenter Renz, Wolfgang Krieg, Christiane Mackenroth, Ernst Buschmann, Jacobus J. DeKramer, Roland Milli
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Patent number: 5237113Abstract: Haloalcohols of the general formula IHal--X--OH (I)where X is straight-chain or branched, substituted or unsubstituted alkylene of 4 or more carbon atoms in the chain, which may be interrupted by one or more heteroatoms, and Hal is halogen, are prepared by reacting a diol of the general formula IIHO--X--OH (II)where X has the above meanings, with an aqueous hydrogen halide solution in a water-immiscible organic solvent which is inert under the reaction conditions, at from 50.degree. to 150.degree. C., using an excess of hydrogen halide, based on the diol of the general formula II, of from 10 to 200 mole percent and setting a volume ratio of inorganic phase: organic phase of from 1:2 to 1:50.Type: GrantFiled: November 9, 1992Date of Patent: August 17, 1993Assignee: BASF AltiengesellschaftInventors: Rainer Becker, Wolfgang Mackenroth, Walter Seufert
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Patent number: 5089659Abstract: E7/Z9 -alkadien-1-ols which may be protected at the hydroxy group are prepared by subjecting a 7-hydroxyheptenal to a Wittig reaction with a phosphorylide to give an acetal compound which is converted by further Wittig reaction with a phosphorylide to an E7/Z9 -alkadienol.Type: GrantFiled: May 19, 1989Date of Patent: February 18, 1992Assignee: BASF AktiengesellschaftInventors: Christiane Brueckner, Ernst Buschmann, Wolfgang Mackenroth, Walter Himmele, Heinz Eckhardt
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Patent number: 5002971Abstract: Agent for controlling the peach twig borer, Anarsia lineatella, by the confusion technique containing a mixture of E5-decen-1-ol (I), E5-decen-1-yl acetate (II) and Z5-decen-1-ol (III) and Z5-decen-1-yl acetate (IV), the amount of the Z isomers (III) and (IV) being up to 50% by weight, based on the mixture (I) to (IV), and, if required, conventional additives and assistants.Type: GrantFiled: February 16, 1989Date of Patent: March 26, 1991Assignee: BASF AktiengesellschaftInventors: Rainer Becker, Ernst Buschmann, Wolfgang Mackenroth, Gregor Schuermann, Walter Seufert, Wolfgang Seppelt, Wolfgang Krieg, Ulrich Neumann
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Patent number: 4973765Abstract: Dien-1-ols of the general formula I ##STR1## where the radicals R.sup.1 to R.sup.7 are identical to or different from one another and each is hydrogen or straight-chain or branched alkyl of 1-12 carbon atoms and n is 1-14, are prepared by dehydrating a hydroxyalkenyl tert-butyl ether of the formula II ##STR2## in the presence of an acidic catalyst at elevated temperatures and essentially at the same time splitting off the tert-butyl protective group, as is 9-hydroxydodec-10-enyl 1-tert-butyl ether which is useful as an intermediate for synthesizing 8,10-dodecadienol.Type: GrantFiled: December 20, 1989Date of Patent: November 27, 1990Assignee: BASF AktiengesellschaftInventors: Wolfgang Mackenroth, Wolfgang Hoelderich, Rainer Becker, Walter Seufert