Patents by Inventor Michael Karcher
Michael Karcher 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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Patent number: 8557985Abstract: A process continuously hydrogenating unsaturated compounds, in which particles of a first hydrogenation catalyst are suspended in a liquid phase in which an unsaturated compound is dissolved, the liquid phase, in the presence of a hydrogenous gas at a first partial hydrogen pressure and at a first temperature, is conducted through a packed bubble column reactor in cocurrent counter to the direction of gravity, the effluent from the bubble column reactor is sent to a gas-liquid separation, the liquid phase is sent to a crossfiltration to obtain a retentate and a filtrate, the retentate is recycled into the bubble column reactor and the filtrate, in the presence of a hydrogenous gas at a second partial hydrogen pressure and at a second temperature, is passed over a bed of a second hydrogenation catalyst, the second partial hydrogen pressure is at least 10 bar higher than the first partial hydrogen pressure.Type: GrantFiled: March 19, 2012Date of Patent: October 15, 2013Assignee: BASF SEInventors: Bram Willem Hoffer, Hartwig Voβ, Ekkehard Schwab, Udo Rheude, Gerd Kaibel, Mathias Haake, Jan Eberhardt, Michael Karcher
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Publication number: 20130040799Abstract: A process for preparing magnesium compounds by precipitation, in which an aqueous solution or suspension of a magnesium compound is mixed with a precipitant and the corresponding magnesium compound is precipitated wherein the aqueous solution or suspension of a magnesium compound is obtained by reaction of an organomagnesium compound with an aldehyde or a ketone or another electrophile and subsequent aqueous workup of the reaction mixture at a pH of at most 10 or from a magnesium salt with a maximum calcium content and/or potassium content of 200 ppm, based on the magnesium salt used.Type: ApplicationFiled: March 6, 2012Publication date: February 14, 2013Applicant: BASF SEInventors: Marcus Georg Schrems, Anna Katharina Dürr, Günther Huber, Jesus Enrique Zerpa Unda, Katrin Freitag, Michael Karcher, Axel Salden
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Publication number: 20120232267Abstract: A process continuously hydrogenating unsaturated compounds, in which particles of a first hydrogenation catalyst are suspended in a liquid phase in which an unsaturated compound is dissolved, the liquid phase, in the presence of a hydrogenous gas at a first partial hydrogen pressure and at a first temperature, is conducted through a packed bubble column reactor in cocurrent counter to the direction of gravity, the effluent from the bubble column reactor is sent to a gas-liquid separation, the liquid phase is sent to a crossfiltration to obtain a retentate and a filtrate, the retentate is recycled into the bubble column reactor and the filtrate, in the presence of a hydrogenous gas at a second partial hydrogen pressure and at a second temperature, is passed over a bed of a second hydrogenation catalyst, the second partial hydrogen pressure is at least 10 bar higher than the first partial hydrogen pressure.Type: ApplicationFiled: March 19, 2012Publication date: September 13, 2012Applicant: BASF SEInventors: Bram Willem Hoffer, Hartwig Voss, Ekkehard Schwab, Udo Rheude, Gerd Kaibel, Mathias Haake, Jan Eberhardt, Michael Karcher
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Patent number: 8163963Abstract: A process is described for continuously hydrogenating unsaturated compounds, in which particles of a first hydrogenation catalyst are suspended in a liquid phase in which an unsaturated compound is dissolved, the liquid phase, in the presence of a hydrogenous gas at a first partial hydrogen pressure and at a first temperature, is conducted through a packed bubble column reactor in cocurrent counter to the direction of gravity, the effluent from the bubble column reactor is sent to a gas-liquid separation, the liquid phase is sent to a crossfiltration to obtain a retentate and a filtrate, the retentate is recycled into the bubble column reactor and the filtrate, in the presence of a hydrogenous gas at a second partial hydrogen pressure and at a second temperature, is passed over a bed of a second hydrogenation catalyst, wherein the second partial hydrogen pressure is at least 10 bar higher than the first partial hydrogen pressure.Type: GrantFiled: October 16, 2006Date of Patent: April 24, 2012Assignee: BASF SEInventors: Bram Willem Hoffer, Hartwig Voβ, Ekkehard Schwab, Udo Rheude, Gerd Kaibel, Mathias Haake, Jan Eberhardt, Michael Karcher
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Publication number: 20100119423Abstract: The invention relates to a process for removing carbon monoxide from a hydrogenous gas stream by reacting the carbon monoxide with hydrogen to give methane and water in the presence of a heterogeneous catalyst. In this process, the catalyst is present in the form of a thin-layer catalyst on a support material. The invention further relates to an apparatus for carrying out the process.Type: ApplicationFiled: January 20, 2010Publication date: May 13, 2010Applicant: BASF SEInventors: Mathias Haake, Stefan Kotrel, Michael Karcher, Rudi Blümmel
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Publication number: 20100081804Abstract: A process is described for continuously hydrogenating unsaturated compounds, in which particles of a first hydrogenation catalyst are suspended in a liquid phase in which an unsaturated compound is dissolved, the liquid phase, in the presence of a hydrogenous gas at a first partial hydrogen pressure and at a first temperature, is conducted through a packed bubble column reactor in cocurrent counter to the direction of gravity, the effluent from the bubble column reactor is sent to a gas-liquid separation, the liquid phase is sent to a crossfiltration to obtain a retentate and a filtrate, the retentate is recycled into the bubble column reactor and the filtrate, in the presence of a hydrogenous gas at a second partial hydrogen pressure and at a second temperature, is passed over a bed of a second hydrogenation catalyst, wherein the second partial hydrogen pressure is at least 10 bar higher than the first partial hydrogen pressure.Type: ApplicationFiled: October 16, 2006Publication date: April 1, 2010Inventors: Bram Willem Hoffer, Hartwig Voss, Ekkehard Schwab, Udo Rheude, Gerd Kaibel, Mathias Haake, Jan Eberhardt, Michael Karcher
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Patent number: 7678837Abstract: The invention relates to a process for removing carbon monoxide from a hydrogenous gas stream by reacting the carbon monoxide with hydrogen to give methane and water in the presence of a heterogeneous catalyst. In this process, the catalyst is present in the form of a thin-layer catalyst on a support material. The invention further relates to an apparatus for carrying out the process.Type: GrantFiled: January 9, 2006Date of Patent: March 16, 2010Assignee: BASF SEInventors: Mathias Haake, Stefan Kotrel, Michael Karcher, Rudi Blümmel
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Publication number: 20080108715Abstract: The invention relates to a process for removing carbon monoxide from a hydrogenous gas stream by reacting the carbon monoxide with hydrogen to give methane and water in the presence of a heterogeneous catalyst. In this process, the catalyst is present in the form of a thin-layer catalyst on a support material. The invention further relates to an apparatus for carrying out the process.Type: ApplicationFiled: January 9, 2006Publication date: May 8, 2008Applicant: BASF AKTIENGESELLSCHAFTInventors: Mathias Haake, Stefan Kotrel, Michael Karcher, Rudi Blummel
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Patent number: 5783697Abstract: Vinyl carbamate compounds are prepared by reacting appropriate secondary amines with carbon dioxide and acetylenically unsaturated compounds in the presence of a compound of a metal from the platinum group, in particular a ruthenium compound, with either one of the two process steps (a) and (b) or, preferably, both being carried out:(a) the acetylene compound is reinjected during the reaction;(b) the reaction is carried out in the presence of a tertiary amine.Type: GrantFiled: January 21, 1997Date of Patent: July 21, 1998Assignee: BASF AktiengesellschaftInventors: Marc Heider, Jochem Henkelmann, Michael Karcher, Thomas Ruhl
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Patent number: 5696223Abstract: Oxime ethers of the general formula I ##STR1## where the variables have the following meanings: R.sup.1, R.sup.2 independently of one another hydrogen, C.sub.1 -C.sub.20 -alkyl, C.sub.4 -C.sub.10 -cycloalkyl, C.sub.6 -C.sub.10 -aryl or together a bridge of 3-14 carbon atoms,R.sup.3 hydrogen, C.sub.1 -C.sub.6 -alkyl or phenyl which is unsubstituted or carries inert substituents,n an integer from 1 to 100,A C.sub.2 -C.sub.10 -alkylene groups which are unsubstituted or carry inert substituents,a process for the preparation thereof and the use thereof as copolymerizable monomers are described.Type: GrantFiled: November 28, 1995Date of Patent: December 9, 1997Assignee: BASF AktiengesellschaftInventors: Michael Karcher, Marc Heider, Thomas Ruhl, Jochem Henkelmann
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Patent number: 5683555Abstract: Reaction mixtures obtained in addition reactions of OH-- or NH-- carrying compounds with acetylene or propyne in the presence of alkali metal alcoholates or alkali metal amides are worked up by distilling off the vaporizable components from the reaction mixture in a thin-film evaporator. Before removal of the vaporizable components from the reaction mixture, a particularly defined polyether is added thereto.Type: GrantFiled: March 11, 1996Date of Patent: November 4, 1997Assignee: BASF AktiengesellschaftInventors: Marc Heider, Michael Karcher, Martin Schmidt-Radde, Albrecht Dams
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Patent number: 5587503Abstract: Process for preparing silicon-containing vinyl ethers and vinyl thioethers of the general formula I ##STR1## where the variables have the following meanings: X is oxygen or sulfur,R.sup.1 is C.sub.1 -C.sub.20 -alkylene, C.sub.3 -C.sub.12 -cycloalkylene or C.sub.6 -C.sub.10 -arylene,R.sup.2, R.sup.3 and R.sup.4 are hydrogen, C.sub.1 -C.sub.20 -alkyl, C.sub.3 -C.sub.12 -cycloalkyl, C.sub.1 -C.sub.12 -alkoxy, phenoxy, heteroaryl or together with R.sup.1 form a C.sub.3 -C.sub.12 -cycle,by reaction of silicon-containing alcohols or thiols of the general formula II ##STR2## where the variables have the meaning indicated above, with acetylene, by carrying out the reaction in phenyl methyl sulfoxide, dimethyl sulfoxide, sulfolane or hexamethylphosphoramide in the presence of an alkali metal hydroxide.Type: GrantFiled: August 24, 1995Date of Patent: December 24, 1996Assignee: BASF AktiengesellschaftInventors: Marc Heider, Jochem Henkelmann, Michael Karcher
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Patent number: 5319148Abstract: The preparation of pyrocatechol monoethers or pyrocatechols of the formula Ia or Ib respectively ##STR1## ( R.sup.1 and R.sup.2 =H or C.sub.1 --C.sub.8 -hydrocarbon radicals; R.sup.3 =C.sub.1 --C.sub.8 -hydrocarbon radical ) by rearranging a 2-hydroxycyclohexanone dialkyl ketal II ##STR2## a) in the gas phase in the presence of a platinmetal or in the presence of a compound of one of these metals as catalyst in order to obtain a compound Ia, orb) carrying out step a) in the presence of water in order to obtain a compound Ib. The products are used as intermediates in the synthesis of pharmaceuticals, fragrances and flavors.Type: GrantFiled: March 2, 1993Date of Patent: June 7, 1994Assignee: BASF AktiengesellschaftInventors: Michael Karcher, Horst Zimmermann, Jochem Henkelmann
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Patent number: 5200490Abstract: Polyurethane vinyl ethers are obtainable by reactingA) 1 NCO equivalent of one or more isocyanurate-containing polyisocyanates withB) 0.01-1.0 OH equivalent of one or more monohydroxyvinyl ethers andC) 0-0.99 equivalent of functional groups of further compounds, which groups are reactive with OCN.Type: GrantFiled: February 21, 1992Date of Patent: April 6, 1993Assignee: BASF AktiengesellschaftInventors: Ulrich Jaeger, Erich Beck, Michael Karcher
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Patent number: 4967015Abstract: Polytetrahydrofuran vinyl ethers of the general formulaH.sub.2 C.dbd.HC--[)O--CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --].sub.n O--R Iwhere R is hydrogen or the CH.dbd.CH radical and n is from 2 to 150, are prepared by a process in which polytetrahydrofuran of the general formulaH--[O--CH.sub.2 --CH.sub.2 --CH.sub.2 --CH.sub.2 --].sub.n OH IIis reacted with acetylene.Type: GrantFiled: October 16, 1989Date of Patent: October 30, 1990Assignee: BASF AktiengesellschaftInventors: Michael Karcher, Heinz Eckhardt, Jochem Henkelmann