Patents by Inventor Martin Fiene
Martin Fiene 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: 8273915Abstract: The invention provides a process for preparing polyisocyanates, comprising the steps of a) reacting amines with phosgene, b) removing hydrogen chloride, excess phosgene and, if appropriate, the solvent from the reaction mixture, c) separating the liquid mixture from step b) into a liquid phase and a gaseous phase, d) working up the gaseous phase from step c) to give the polyisocyanate.Type: GrantFiled: August 27, 2008Date of Patent: September 25, 2012Assignee: BASF SEInventors: Bernd Rumpf, Michael Bock, Martin Fiene, Eckhard Stroefer
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Patent number: 8231792Abstract: The invention relates to a process for purifying an ionic liquid, which comprises the steps (a) partial crystallization of the ionic liquid from its melt and (b) separation of the crystals from the residual melt.Type: GrantFiled: December 6, 2005Date of Patent: July 31, 2012Assignee: BASF AktiengesellschaftInventors: Martin Fiene, Harald Rust, Klemens Massonne, Veit Stegmann, Oliver Huttenloch, Jörg Heilek
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Patent number: 8044166Abstract: The present invention relates to a process for preparing pentamethylene 1,5-diisocyanate, to pentamethylene 1,5-diisocyanate prepared in this way and to the use thereof.Type: GrantFiled: July 25, 2007Date of Patent: October 25, 2011Assignee: BASF AktiengesellschaftInventors: Martin Fiene, Eckhard Stroefer, Wolfgang Siegel, Stephan Freyer, Oskar Zelder, Gerhard Schulz
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Publication number: 20110124908Abstract: The invention provides a process for preparing polyisocyanates, comprising the steps of a) reacting amines with phosgene, b) removing hydrogen chloride, excess phosgene and, if appropriate, the solvent from the reaction mixture, c) separating the liquid mixture from step b) into a liquid phase and a gaseous phase, d) working up the gaseous phase from step c) to give the polyisocyanate.Type: ApplicationFiled: August 27, 2008Publication date: May 26, 2011Applicant: BASF SEInventors: Bernd Rumpf, Michael Bock, Martin Fiene, Eckhard Stroefer
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Patent number: 7927080Abstract: The invention relates to a method of operating a liquid ring compressor having an impeller installed eccentrically in a compressor body, with gas being supplied to the liquid ring compressor on a suction side and gas being discharged from the liquid ring compressor on a pressure side. A liquid ring is generated in the liquid ring compressor on the inside of the compressor body by rotation of the impeller. Chambers are formed between blades of the impeller and the liquid ring and gas is drawn into these. The gas is compressed in the chambers which become smaller from the suction side to the pressure side as a result of the rotation of the eccentrically mounted impeller. The compressed gas is ejected on the pressure side. An ionic liquid is used as service liquid for generation of the liquid ring.Type: GrantFiled: September 16, 2005Date of Patent: April 19, 2011Assignee: BASF AktiengesellschaftInventors: Christian Müller, Martin Sesing, Martin Fiene, Oliver Huttenloch, Eckhard Stroefer
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Publication number: 20100227997Abstract: The present invention provides a process for working up isocyanate adducts, comprising the steps of a) reacting the isocyanate adducts with pure ammonia, b) working up the reaction products obtained in step a), c) recycling the amines formed into the isocyanate production.Type: ApplicationFiled: June 14, 2006Publication date: September 9, 2010Applicant: BASF AktiengesellschaftInventors: Martin Fiene, Ralf Boehling, Eckhard Stroefer, Herbert Vogel, Fatima Mesri
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Patent number: 7736598Abstract: The invention relates to a reactor and a process for preparing chlorine from hydrogen chloride by gas-phase oxidation by means of oxygen in the presence of a heterogeneous catalyst in a fluidized bed, with gas-permeable plates being located in the fluidized bed. The gas-permeable plates are connected in a thermally conductive manner to a heat exchanger located in the fluidized bed.Type: GrantFiled: February 8, 2005Date of Patent: June 15, 2010Assignee: BASF AktiengesellschaftInventors: Lothar Seidemann, Olga Schubert, Martin Sesing, Eckhard Stroefer, Martin Fiene, Christian Walsdorff, Klaus Harth
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Publication number: 20090292100Abstract: The present invention relates to a process for preparing pentamethylene 1,5-diisocyanate, to pentamethylene 1,5-diisocyanate prepared in this way and to the use thereof.Type: ApplicationFiled: July 25, 2007Publication date: November 26, 2009Applicant: BASF SEInventors: Martin Fiene, Eckhard Stroefer, Wolfgang Siegel, Stephan Freyer, Oskar Zelder, Gerhard Schulz
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Publication number: 20090250409Abstract: The invention relates to a process for purifying an ionic liquid, which comprises the steps (a) partial crystallization of the ionic liquid from its melt and (b) separation of the crystals from the residual melt.Type: ApplicationFiled: December 6, 2005Publication date: October 8, 2009Applicant: BASF AktiengesellschsftInventors: Martin Fiene, Harald Rust, Klemens Massonne, Veit Stegmann, Oliver Huttenloch, Jörg Heilek
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Publication number: 20080233043Abstract: A process for preparing chlorine by gas-phase oxidation of hydrogen chloride by means of a gas stream comprising molecular oxygen in the presence of a fixed-bed catalyst, wherein the process is carried out in a reactor (1) having heat-exchange plates (2) which are arranged in the longitudinal direction of the reactor (1) and have a spacing between them and through which a heat transfer medium flows, inlet and outlet facilities (3, 4) for the heat transfer medium to the heat-exchange plates (2) and also gaps (5) between the heat-exchange plates (2) in which the fixed-bed catalyst is present and into which the hydrogen chloride and the gas stream comprising molecular oxygen are passed, is described.Type: ApplicationFiled: December 23, 2004Publication date: September 25, 2008Applicant: BASF AkiengesellschaftInventors: Gerhard Olbert, Olga Schubert, Martin Sesing, Eckhard Stroefer, Martin Fiene
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Patent number: 7381851Abstract: A process for preparing formaldehyde by gas-phase oxidation of methanol vapor by means of a gas stream comprising molecular oxygen in the presence of a fixed-bed catalyst comprising iron and molybdenum, wherein the process is carried out in a reactor (1) having heat-exchange plates (2) which are arranged in the longitudinal direction of the reactor (1) and have a spacing between them and through which a heat transfer medium flows, inlet and outlet facilities (3, 4) for the heat transfer medium to the heat-exchange plates (2) and also gaps (5) between heat-exchange plates (2) in which the fixed-bed catalyst is present and into which the methanol vapor and the gas stream comprising molecular oxygen are passed, is described.Type: GrantFiled: December 23, 2004Date of Patent: June 3, 2008Assignee: BASF AktiengesellschaftInventors: Gerhard Olbert, Thorsten Johann, Markus Weber, Neven Lang, Eckhard Ströfer, Martin Fiene, Markus Siegert
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Publication number: 20070269309Abstract: The invention relates to a method of operating a liquid ring compressor having an impeller installed eccentrically in a compressor body, with gas being supplied to the liquid ring compressor on a suction side and gas being discharged from the liquid ring compressor on a pressure side. A liquid ring is generated in the liquid ring compressor on the inside of the compressor body by rotation of the impeller. Chambers are formed between blades of the impeller and the liquid ring and gas is drawn into these. The gas is compressed in the chambers which become smaller from the suction side to the pressure side as a result of the rotation of the eccentrically mounted impeller. The compressed gas is ejected on the pressure side. An ionic liquid is used as service liquid for generation of the liquid ring.Type: ApplicationFiled: September 16, 2005Publication date: November 22, 2007Applicant: BASF AktiengesellschaftInventors: Christian Muller, Martin Sesing, Martin Fiene, Oliver Huttenloch, Eckhard Stroefer
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Publication number: 20070202035Abstract: The invention relates to a process for carrying out exothermic chemical equilibrium reactions in a fluidized-bed reactor, wherein there is a temperature distribution in the fluidized bed of the fluidized-bed reactor and the temperature difference between the lowest temperature and the highest temperature is at least 10 K. The invention further relates to a fluidized-bed reactor for carrying out chemical reactions in a fluidized bed (5), wherein at least one heat exchanger (12, 28) is located in the fluidized bed (5) to control the temperature distribution.Type: ApplicationFiled: March 21, 2005Publication date: August 30, 2007Inventors: Christian Walsdorff, Lothar Seidemann, Martin Sesing, Martin Fiene, Thomas Grassler, Olga Schubert, Eckhard Stroefer, Martin Sohn
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Publication number: 20070183963Abstract: The invention relates to a reactor and a process for preparing chlorine from hydrogen chloride by gas-phase oxidation by means of oxygen in the presence of a heterogeneous catalyst in a fluidized bed, with gas-permeable plates being located in the fluidized bed. The gas-permeable plates are connected in a thermally conductive manner to a heat exchanger located in the fluidized bed.Type: ApplicationFiled: February 8, 2005Publication date: August 9, 2007Applicant: BASF AKTIENGESELLSCHAFTInventors: Lothar Seidemann, Olga Schubert, Martin Sesing, Eckhard Stroefer, Martin Fiene, Christian Walsdorff, Klaus Harth
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Publication number: 20070142677Abstract: A process for preparing formaldehyde by gas-phase oxidation of methanol vapor by means of a gas stream comprising molecular oxygen in the presence of a fixed-bed catalyst comprising iron and molybdenum, wherein the process is carried out in a reactor (1) having heat-exchange plates (2) which are arranged in the longitudinal direction of the reactor (1) and have a spacing between them and through which a heat transfer medium flows, inlet and outlet facilities (3, 4) for the heat transfer medium to the heat-exchange plates (2) and also gaps (5) between heat-exchange plates (2) in which the fixed-bed catalyst is present and into which the methanol vapor and the gas stream comprising molecular oxygen are passed, is described.Type: ApplicationFiled: December 23, 2004Publication date: June 21, 2007Inventors: Gerhard Olbert, Thorsten Johann, Markus Weber, Neven Lang, Eckhard Stroefer, Martin Fiene, Markus Siegert
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Publication number: 20060263290Abstract: The invention relates to a process for preparing chlorine by catalytic gas-phase oxidation of hydrogen chloride, which comprises the steps: a) providing a feed gas stream I comprising hydrogen chloride and a feed gas stream II comprising oxygen; b) in a first oxidation stage, feeding the feed gas stream I, the feed gas stream II, if desired a recycle stream la comprising hydrogen chloride and if desired an oxygen-containing recycle stream IIa into a first oxidation zone and bringing them into contact with a first oxidation catalyst so that a first partial amount of the hydrogen chloride is oxidized to chlorine and a gas stream III comprising chlorine, unreacted oxygen, unreacted hydrogen chloride and water vapor is obtained; c) in a second oxidation stage, feeding the gas stream III into a second oxidation zone and bringing it into contact with at least one further oxidation catalyst so that a second partial amount of the hydrogen chloride is oxidized to chlorine and a product gas stream IV comprising chlorinType: ApplicationFiled: August 6, 2004Publication date: November 23, 2006Applicant: BASF AktiengesellschaftInventors: Christian Walsdorff, Martin Fiene, Martin Sesing, Olga Metelkina, Lothar Seidemann, Eckhard Stroefer, Klaus Harth
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Publication number: 20060251961Abstract: The use of an ionic liquid as heat transfer medium for the indirect introduction or removal of heat into or from a reactor is described.Type: ApplicationFiled: March 24, 2004Publication date: November 9, 2006Applicant: BASF AKTIENGESELLSCHAFTInventors: Gerhard Olbert, Torsten Mattke, Martin Fiene, Oliver Huttenloch, Ulrich Hammon
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Publication number: 20060140849Abstract: The invention relates to a catalyst for the catalytic oxidation of hydrogen chloride, comprising on a support a) from 0.001 to 30% by weight of gold, b) from 0 to 3% by weight of one or more alkaline earth metals, c) from 0 to 3% by weight of one or more alkali metals, d) from 0 to 10% by weight of one or more rare earth metals, e) from 0 to 10% by weight of one or more further metals selected from the group consisting of ruthenium, palladium, platinum, osmium, iridium, silver, copper and rhenium, in each case based on the total weight of the catalyst.Type: ApplicationFiled: September 25, 2003Publication date: June 29, 2006Inventors: Christian Kuhrs, Christian Walsdorff, Martin Fiene, Eckhard Stroefer, Klaus Harth
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Publication number: 20060099138Abstract: Process for preparing chlorine from hydrochloric acid, which comprises the steps: a) providing a hydrochloric acid feed stream I; b) providing a hydrochloric acid recycle stream II; c) separating off a hydrogen chloride stream IV from the hydrochloric acid feed stream I and the hydrochloric acid recycle stream II in a distillation step; d) feeding the hydrogen chloride stream IV, an oxygen-containing steam V and, if desired, an oxygen-containing recycle stream Va into an oxidation zone and oxidizing hydrogen chloride to chlorine in the presence of a catalyst to give a product gas stream VI comprising chlorine, unreacted oxygen, unreacted hydrogen chloride and water vapor; e) separating off hydrogen chloride and water from the product gas stream VI in an absorption step to give a gas stream VII and the hydrochloric acid recycle stream II; f) if desired, drying the gas stream VII; g) separating off an oxygen-containing stream from the gas stream VII and, if desired, recirculating at least part of this as oxygenType: ApplicationFiled: October 27, 2003Publication date: May 11, 2006Applicant: BASF AktiengesellschaftInventors: Christian Walsdorff, Martin Fiene, Christian Kuhrs, Eckhard Stroefer, Klaus Harth
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Patent number: 6962682Abstract: A process for preparing chlorine by catalytic gas-phase oxidation of hydrogen chloride over a fixed catalyst bed is disclosed that includes: making available a feed gas stream I with hydrogen chloride and an oxygen-containing feed gas stream II, feeding the feed gas stream I, the feed gas stream II, and, if desired, a recycled stream Ia with hydrogen chloride, an oxygen-containing recycle stream IIa, and a recycled stream III into an oxidation zone and oxidizing hydrogen chloride to chlorine in the presence of a catalyst present in a fixed bed to give product gas stream IV having chlorine, unreacted oxygen, unreacted hydrogen chloride and water vapor, and taking the recycled stream III from the product gas stream IV, without further treatment, and recirculating it to the oxidation zone, leaving a product gas stream IVa.Type: GrantFiled: November 20, 2002Date of Patent: November 8, 2005Assignee: BASF AktiengesellschaftInventors: Christian Walsdorff, Martin Fiene, Christoph Adami, Eckhard Ströfer, Klaus Harth