Patents by Inventor Andreas Wölfert
Andreas Wölfert 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: 20190100547Abstract: The present invention relates to a method for preparing 2?-O-fucosyllactose and to the protected fucosyl donor of the formula (I) used in this method. The method comprises reacting the fucose derivative of the formula (I) below with the compound of the general formula (II), in the presence of an activating reagent.Type: ApplicationFiled: March 8, 2017Publication date: April 4, 2019Inventors: MICHAEL PUHL, Stephanie RENZ, Andreas WOELFERT
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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: 9067872Abstract: A process for compressing a hydrogen-sulfide-comprising gas stream, which comprises (i) compressing the hydrogen-sulfide-comprising gas stream in a compressor, (ii) flushing the compressor with a mixture comprising dialkyl polysulfides, dialkyl disulfides and at least one amine; a process for producing sulfur compounds, selected from the group consisting of alkylmercaptans, dialkyl disulfides and alkanesulfonic acids, which comprises the conversion of hydrogen-sulfide-comprising gas streams, wherein the hydrogen-sulfide-comprising gas streams are compressed according to the process comprising steps i) and ii); and also the use of a mixture comprising dialkyl polysulfides, dialkyl disulfides and at least one amine for removing sulfur deposits which occur in the compression of hydrogen-sulfide-comprising gas streams.Type: GrantFiled: December 22, 2009Date of Patent: June 30, 2015Assignee: BASF SEInventors: Andreas Woelfert, Frank Grzonkowski, Harald Jachow, Guenter Renz
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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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Patent number: 8580208Abstract: 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: December 9, 2010Date of Patent: November 12, 2013Assignee: BASF SEInventors: Andreas Woelfert, Herald Jachow, Heinz Driess
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Patent number: 8546606Abstract: The invention relates to a process for preparing polyisocyanates by reacting primary amines with phosgene, which comprises the steps a) mixing the amine with the phosgene, b) reacting the amine with the phosgene in a residence reactor and, if desired, c) transferring the output from the reactor of step b) into a distillation column, wherein the residence reactor in step b) is configured as a tube reactor.Type: GrantFiled: February 20, 2004Date of Patent: October 1, 2013Assignee: BASF AktiengesellschaftInventors: Andreas Brodhagen, Martin Sohn, Filip Nevejans, Eckhard Stroefer, Andreas Woelfert, Steffen Oehlenschlaeger
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Patent number: 8436204Abstract: The invention provides a process for preparing isocyanates by reacting amines with phosgene, wherein the amine or a mixture of amine and a solvent is mixed in the form of an aerosol with gaseous phosgene and the amine is subsequently reacted with phosgene.Type: GrantFiled: July 5, 2007Date of Patent: May 7, 2013Assignee: BASF AktiengesellschaftInventors: Carsten Knoesche, Eckhard Stroefer, Dieter Stuetzer, Bernd Sachweh, Markus Linsenbuhler, Andreas Woelfert
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Patent number: 8288584Abstract: The present invention relates to a process for preparing diisocyanates from diamines and phosgene in the gas phase.Type: GrantFiled: September 11, 2008Date of Patent: October 16, 2012Assignee: BASF SEInventors: Carsten Knoesche, Andreas Woelfert, Torsten Mattke, Eckhard Stroefer, Heinrich-Josef Blankertz, Bernhard Geissler
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Patent number: 8258337Abstract: The present invention relates to a process for preparing isocyanates and an apparatus suitable for this purpose, and also its use. In the process, an amine and phosgene, both in the gas phase, react in the presence of an inert medium. A number, n, of amine streams are reacted with a number, n +1, of phosgene streams in a reactor. The number n is a positive integer of at least 1. All amine and phosgene streams are introduced into the reactor through annular gaps for mixing.Type: GrantFiled: August 23, 2006Date of Patent: September 4, 2012Assignee: BASF AktiengesellschaftInventors: Andreas Woelfert, Carsten Knoesche, Andreas Daiss, Tsung-Chieh Cheng, Torsten Mattke, Eckhard Stroefer
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Patent number: 8173833Abstract: The present invention relates to a process for preparing isocyanates.Type: GrantFiled: November 6, 2007Date of Patent: May 8, 2012Assignee: BASF AktiengesellschaftInventors: Andreas Woelfert, Andreas Daiss, Torsten Mattke
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Patent number: 8168818Abstract: The invention relates to a process for preparing isocyanates in the gas phase.Type: GrantFiled: November 6, 2007Date of Patent: May 1, 2012Assignee: BASF AktiengesellschaftInventors: Andreas Daiss, Andreas Woelfert, Carsten Knoesche, Eckhard Stroefer
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Patent number: 8088944Abstract: Isocyanates are prepared by a process in which a product stream from the isocyanate synthesis is purified.Type: GrantFiled: September 20, 2006Date of Patent: January 3, 2012Assignee: BASF SEInventors: Andreas Woelfert, Hans-Juergen Pallasch, Eckhard Stroefer, Heinrich-Josef Blankertz