Patents by Inventor Andreas Wolfert
Andreas Wolfert 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: 20210130384Abstract: The present invention relates to a method for preparing 2?-O-fucosyllactose, the intermediates obtainable by this method and the use of these intermediates. The preparation comprises the reaction of a protected fucose of the general formula (I) with a tri(C1-C6-alkyl)silyl iodide to give a protected 1-iodofucose followed by the reaction of the protected 1-iodofucose with a compound of the general formula (II), in the presence of at least one base and deprotecting the resulting coupling product to afford 2?-O-fucosyllactose.Type: ApplicationFiled: February 2, 2017Publication date: May 6, 2021Inventors: MICHAEL PUHL, Wolfgfang SIEGEL, Stephanie RENZ, Andreas WÖLFERT
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Patent number: 10974964Abstract: The present invention relates to a reactor R with apparatus D, the latter comprising a gas- and/or liquid-permeable tray B, in the edge region of which there is disposed a lateral boundary W which fully encloses the tray B and forms a volume V comprising catalytic and/or noncatalytic shaped bodies (F), wherein there is at least one braid made of precious metal and/or base metal on the upstream side opposite the tray B, and the catalytic and/or noncatalytic shaped bodies (F) are selected from (i) shaped bodies (F1) in the form of straight prisms, the footprint of which is selected from triangle, rectangle, hexagon or fragments of these polygons, and (ii) a combination of the shaped bodies (F1) with shaped bodies (F2) that are smaller than the shaped bodies (F1), wherein groups of m to n shaped bodies (F1), m and n being an integer from 3 to 30 with n>m, are framed in a metal cassette open in the upstream direction and closed in the downstream direction by a gas-permeable tray, in a virtually seamless mannerType: GrantFiled: November 18, 2016Date of Patent: April 13, 2021Inventors: Gerhard Olbert, Jochen Gauer, Holger Friedrich, Andreas Spiegel, Andreas Wölfert, Wolfgang Gmeiner, Michael Lorenz
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Patent number: 10576449Abstract: The invention relates to a reactor for carrying out heterogeneously catalyzed gas-phase reactions, having an internal element (11, 35) or a plurality of internal elements (11, 35) which are arranged in succession in the flow direction of the gas mixture of the heterogeneously catalyzed gas-phase reaction through the reactor (10), where the internal elements extend over the entire reactor cross section, wherein the one or more internal elements (11, 35) is/are at least partly made of a fiber composite ceramic material.Type: GrantFiled: December 16, 2016Date of Patent: March 3, 2020Assignee: BASF SEInventors: Gerhard Olbert, Andreas Wölfert, Holger Friedrich
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Publication number: 20180369780Abstract: The invention relates to a reactor for carrying out heterogeneously catalyzed gas-phase reactions, having an internal element (11, 35) or a plurality of internal elements (11, 35) which are arranged in succession in the flow direction of the gas mixture of the heterogeneously catalyzed gas-phase reaction through the reactor (10), where the internal elements extend over the entire reactor cross section, wherein the one or more internal elements (11, 35) is/are at least partly made of a fiber composite ceramic material.Type: ApplicationFiled: December 16, 2016Publication date: December 27, 2018Inventors: Gerhard OLBERT, Andreas WÖLFERT, Holger FRIEDRICH
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Publication number: 20180305210Abstract: The present invention relates to a reactor R with apparatus D, the latter comprising a gas- and/or liquid-permeable tray B, in the edge region of which there is disposed a lateral boundary W which fully encloses the tray B and forms a volume V comprising catalytic and/or noncatalytic shaped bodies (F), wherein there is at least one braid made of precious metal and/or base metal on the upstream side opposite the tray B, and the catalytic and/or noncatalytic shaped bodies (F) are selected from (i) shaped bodies (F1) in the form of straight prisms, the footprint of which is selected from triangle, rectangle, hexagon or fragments of these polygons, and (ii) a combination of the shaped bodies (F1) with shaped bodies (F2) that are smaller than the shaped bodies (F1), wherein groups of m to n shaped bodies (F1), m and n being an integer from 3 to 30 with n>m, are framed in a metal cassette open in the upstream direction and closed in the downstream direction by a gas-permeable tray, in a virtually seamless mannerType: ApplicationFiled: November 18, 2016Publication date: October 25, 2018Inventors: Gerhard OLBERT, Jochen GAUER, Holger FRIEDRICH, Andreas SPIEGEL, Andreas WÖLFERT, Wolfgang GMEINER, Michael LORENZ
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Patent number: 9725320Abstract: A device D accommodated in a reactor R and containing a gas- and/or liquid-permeable bottom B, in the peripheral region of which is arranged a lateral boundary W which completely surrounds the bottom B and forms a volume V which is partially or completely filled with catalytic and/or non-catalytic moldings, there optionally being located on the side facing the bottom B in the upstream direction at least one noble metal and/or non-noble metal fabric, wherein a thermal insulation layer S is located on at least part of the surface of the inner side of the lateral boundary W of the device D, the material for the thermal insulation layer S being selected from the group consisting of ceramic material, microporous material and silicate fibers.Type: GrantFiled: August 6, 2014Date of Patent: August 8, 2017Assignee: BASF SEInventors: Gerhard Olbert, Holger Friedrich, Andreas Wölfert, Robert Kuhn, Tobias Lenke, Wolfgang Gmeiner
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Publication number: 20160200575Abstract: A device D accommodated in a reactor R and containing a gas- and/or liquid-permeable bottom B, in the peripheral region of which is arranged a lateral boundary W which completely surrounds the bottom B and forms a volume V which is partially or completely filled with catalytic and/or non-catalytic moldings, there optionally being located on the side facing the bottom B in the upstream direction at least one noble metal and/or non-noble metal fabric, wherein a thermal insulation layer S is located on at least part of the surface of the inner side of the lateral boundary W of the device D, the material for the thermal insulation layer S being selected from the group consisting of ceramic material, microporous material and silicate fibers.Type: ApplicationFiled: August 6, 2014Publication date: July 14, 2016Applicant: BASF SEInventors: Gerhard OLBERT, Holger FRIEDRICH, Andreas WÖLFERT, Robert KUHN, Tobias LENKE, Wolfgang GMEINER
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Patent number: 9061971Abstract: The present invention comprises a process for purifying isocyanate-comprising residues.Type: GrantFiled: September 21, 2006Date of Patent: June 23, 2015Assignee: BASF AktiengesellschaftInventors: Andreas Wölfert, Carsten Knösche, Matthias Klötzer, Hermann Ascherl, Eckhard Stroefer, Heinrich-Josef Blankertz, Michael Schönherr, Martin Karches, Christian Benz
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Patent number: 8829232Abstract: The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene in the liquid phase, if appropriate in the presence of at least one inert medium, in which the amine and the phosgene are first mixed in a mixing chamber (1) to give a reaction mixture and the reaction mixture is fed to a reactor, the amine being added through an orifice (3) arranged coaxially to the mixing chamber (1) and the phosgene being added through feed orifices (5) in at least two planes (7, 9) arranged at right angles to the axis (11) of the mixing chamber (1), or the phosgene being added through the orifice (3) arranged coaxially to the mixing chamber and the amine through the feed orifices (5) in at least two planes (7, 9) arranged at right angles to the axis (11) of the mixing chamber (1). At least one plane (9) is arranged upstream and at least one plane (7) downstream of the orifice (3) arranged coaxially to the mixing chamber (1) in main flow direction of the reaction mixture.Type: GrantFiled: August 6, 2009Date of Patent: September 9, 2014Assignee: BASF SEInventors: Ulrich Penzel, Torsten Mattke, Andreas Wölfert, Johannes Jacobs, Tsung-Chieh Cheng, Kerstin Heinen, Eckhard Stroefer, Stefan Maixner, Wolfgang Mackenroth, Christian Tragut, Kai Thiele, Myung Un Won
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Publication number: 20140227160Abstract: The material proposed for sealing off cavities between structural components formed of materials having different thermal characteristics comprises an intumescent mat completely sealed in a polymeric film and the interior bounded by the polymeric film and containing the intumescent mat is evacuated.Type: ApplicationFiled: February 14, 2014Publication date: August 14, 2014Applicant: BASF SEInventors: Gerhard Olbert, Jochen Gauer, Robert Kuhn, Andreas Wölfert, Holger Friedrich
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Publication number: 20110251425Abstract: The invention relates to a process for preparing isocyanates by reacting the corresponding amines with phosgene in the liquid phase, if appropriate in the presence of at least one inert medium, in which the amine and the phosgene are first mixed in a mixing chamber (1) to give a reaction mixture and the reaction mixture is fed to a reactor, the amine being added through an orifice (3) arranged coaxially to the mixing chamber (1) and the phosgene being added through feed orifices (5) in at least two planes (7, 9) arranged at right angles to the axis (11) of the mixing chamber (1), or the phosgene being added through the orifice (3) arranged coaxially to the mixing chamber and the amine through the feed orifices (5) in at least two planes (7, 9) arranged at right angles to the axis (11) of the mixing chamber (1). At least one plane (9) is arranged upstream and at least one plane (7) downstream of the orifice (3) arranged coaxially to the mixing chamber (1) in main flow direction of the reaction mixture.Type: ApplicationFiled: August 6, 2009Publication date: October 13, 2011Applicant: BASF SEInventors: Ulrich Penzel, Torsten Mattke, Andreas Wolfert, Johannes Jocobs, Tsung-Chieh Cheng, Kerstin Heinen, Eckhard Stroefer, Stefan Maixner, Wolfgang Mackenroth, Christian Tragut, Kai Thiele, Myung Un Won
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Patent number: 8021624Abstract: The invention relates to a reactor (1) and a process for continuously preparing H2S by converting a reactant mixture which comprises essentially gaseous sulfur and hydrogen over a catalyst, comprising a sulfur melt (9) at least in a lower subregion (8) of the reactor (1), into which gaseous hydrogen is introduced. The catalyst is arranged in at least one U-shaped tube (21) which is partly in contact with the sulfur melt (9), the at least one U-shaped tube (21) having at least one entry orifice (23) on a limb (26) above the sulfur melt (9), through which the reactant mixture can enter the U-shaped tube (21) from a reactant region (10) of the reactor (1), having a flow path within the at least one U-shaped tube, along which the reactant mixture can be converted in a reaction region comprising the catalyst (22), and having at least one exit orifice (24) in another limb (27) through which a product can exit into a product region (7).Type: GrantFiled: January 14, 2008Date of Patent: September 20, 2011Assignee: BASF SEInventors: Andreas Wölfert, Herald Jachow, Heinz Drieβ
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Publication number: 20110081278Abstract: The present invention describes a reactor (1) for continuously preparing hydrogen sulfide H2S from hydrogen and sulfur, comprising a distributor device (15) for distributing gaseous hydrogen in a sulfur melt (9) present at least in a lower part of the reactor. The distributor device (15) is arranged in the sulfur melt (9) and comprises a distributor plate (16) which is arranged in the reactor (1) and has an edge (17) extending downward and, if appropriate, has passage orifices (19). The hydrogen from a hydrogen bubble which forms below the distributor plate (16) is (for example through the passage orifices (19)) distributed in the sulfur melt (9) via the distributor plate (16).Type: ApplicationFiled: December 9, 2010Publication date: April 7, 2011Applicant: BASF SEInventors: Andreas Wölfert, Harald Jachow, Heinz Drieß
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Patent number: 7887777Abstract: Hydrogen sulfide H2S is prepared from a crude gas stream containing H2S and polysulfanes (H2Sx). The crude gas stream is passed at temperatures of from 114 to 165° C. through catalytically active material present in a vessel, and sulfur is collected in the bottom of the vessel and recycled to the preparation of H2S. This process may be accomplished in an apparatus including a reactor for reacting sulfur and hydrogen, a cooler for receiving and cooling an H2S-containing crude gas stream passed out of the reactor to between 114 to 165° C., a vessel coupled to the cooler, the vessel including catalytically active material and a bottom for collecting sulfur obtained from the crude gas stream, and a line which is connected to the bottom of the vessel and opens into the cooler or into the reactor, for recycling sulfur.Type: GrantFiled: January 15, 2008Date of Patent: February 15, 2011Assignee: BASF SEInventors: Andreas Wölfert, Herald Jachow, Heinz Drieβ
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Patent number: 7871594Abstract: The present invention describes a reactor (1) for continuously preparing hydrogen sulfide H2S from hydrogen and sulfur, comprising a distributor device (15) for distributing gaseous hydrogen in a sulfur melt (9) present at least in a lower part of the reactor. The distributor device (15) is arranged in the sulfur melt (9) and comprises a distributor plate (16) which is arranged in the reactor (1) and has an edge (17) extending downward and, if appropriate, has passage orifices (19). The hydrogen from a hydrogen bubble which forms below the distributor plate (16) is (for example through the passage orifices (19)) distributed in the sulfur melt (9) via the distributor plate (16).Type: GrantFiled: January 10, 2008Date of Patent: January 18, 2011Assignee: BASF SEInventors: Andreas Wölfert, Herald Jachow, Heinz Drieβ
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Patent number: 7833509Abstract: The invention relates to a process and to an apparatus for preparing hydrogen sulfide H2S by converting a reactant mixture which comprises gaseous sulfur and hydrogen over a solid catalyst. The reactant mixture is converted at a pressure of from 0.5 to 10 bar absolute, a temperature of from 300 to 450° C. and a sulfur excess in a reactor (1). The sulfur excess corresponds to a ratio of excess sulfur to H2S prepared of from 0.2 to 3 kg of sulfur per kg of H2S prepared.Type: GrantFiled: January 14, 2008Date of Patent: November 16, 2010Assignee: BASF SEInventors: Andreas Wölfert, Herald Jachow, Heinz Drieβ
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Publication number: 20100068128Abstract: The invention relates to a reactor (1) and a process for continuously preparing H2S by converting a reactant mixture which comprises essentially gaseous sulfur and hydrogen over a catalyst, comprising a sulfur melt (9) at least in a lower subregion (8) of the reactor (1), into which gaseous hydrogen is introduced. The catalyst is arranged in at least one U-shaped tube (21) which is partly in contact with the sulfur melt (9), the at least one U-shaped tube (21) having at least one entry orifice (23) on a limb (26) above the sulfur melt (9), through which the reactant mixture can enter the U-shaped tube (21) from a reactant region (10) of the reactor (1), having a flow path within the at least one U-shaped tube, along which the reactant mixture can be converted in a reaction region comprising the catalyst (22), and having at least one exit orifice (24) in another limb (27) through which a product can exit into a product region (7).Type: ApplicationFiled: January 14, 2008Publication date: March 18, 2010Applicant: BASF SEInventors: Andreas Wölfert, Herald Jachow, Heinz Driess
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Publication number: 20100015036Abstract: The present invention describes a reactor (1) for continuously preparing hydrogen sulfide H2S from hydrogen and sulfur, comprising a distributor device (15) for distributing gaseous hydrogen in a sulfur melt (9) present at least in a lower part of the reactor. The distributor device (15) is arranged in the sulfur melt (9) and comprises a distributor plate (16) which is arranged in the reactor (1) and has an edge (17) extending downward and, if appropriate, has passage orifices (19). The hydrogen from a hydrogen bubble which forms below the distributor plate (16) is (for example through the passage orifices (19)) distributed in the sulfur melt (9) via the distributor plate (16).Type: ApplicationFiled: January 10, 2008Publication date: January 21, 2010Applicant: BASF SEInventors: Andreas Wölfert, Herald Jachow, Heinz Driess
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Publication number: 20100008839Abstract: The invention relates to a process and to an apparatus for continuously preparing hydrogen sulfide H2S, polysulfanes (H2Sx) being present in an H2S-containing crude gas stream obtained in the preparation. The crude gas stream is passed at temperatures of from 114 to 165° C. through catalytically active material (41) present in a vessel (42), and sulfur obtained here is collected in the bottom (43) of the vessel (42) and recycled to the preparation of H2S. The inventive apparatus comprises a reactor (1) for reacting sulfur and hydrogen, a cooler (40) connected to the reactor (1) for cooling an H2S-containing crude gas stream passed out of the reactor (1) to from 114 to 165° C., a vessel (42) which is connected to the cooler (40), comprises catalytically active material (41) and has a bottom (43) for collecting sulfur obtained from the crude gas stream comprising polysulfanes in the vessel (42) at from 114 to 165° C.Type: ApplicationFiled: January 15, 2008Publication date: January 14, 2010Applicant: BASF SEInventors: Andreas Wölfert, Herald Jachow, Heinz Driess
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Publication number: 20090317322Abstract: The invention relates to a process and to an apparatus for preparing hydrogen sulfide H2S by converting a reactant mixture which comprises gaseous sulfur and hydrogen over a solid catalyst. The reactant mixture is converted at a pressure of from 0.5 to 10 bar absolute, a temperature of from 300 to 450° C. and a sulfur excess in a reactor (1). The sulfur excess corresponds to a ratio of excess sulfur to H2S prepared of from 0.2 to 3 kg of sulfur per kg of H2S prepared.Type: ApplicationFiled: January 14, 2008Publication date: December 24, 2009Applicant: BASE SEInventors: Andreas Wölfert, Herald Jachow, Heinz Driess