Patents by Inventor Thilo Hahn
Thilo Hahn 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: 11752757Abstract: In some examples, a transport cylinder for transporting a sheet-format substrate includes at least one channel extending on an outer surface of the transport cylinder in an axial direction. Each channel includes at least one gripper, which is supported on a shaft, for holding a substrate on the outer surface of the transport cylinder. Each channel is covered by a respective cover at the outer surface of the transport cylinder. The cover and/or a shaft supporting the at least one gripper may include a cooling unit. In some examples, a drying unit that includes the transport cylinder may further include an electron beam for curing a printing fluid on a substrate on the transport cylinder. In some examples, a printing press may include the drying unit including the transport cylinder.Type: GrantFiled: January 19, 2022Date of Patent: September 12, 2023Assignee: KOENIG & BAUER AGInventors: Thilo Hahn, Patrick Kress, Volker Scharkus, Robert Stierman
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Publication number: 20230211600Abstract: In some examples, a transport cylinder for transporting a sheet-format substrate includes at least one channel extending on an outer surface of the transport cylinder in an axial direction. Each channel includes at least one gripper, which is supported on a shaft, for holding a substrate on the outer surface of the transport cylinder. Each channel is covered by a respective cover at the outer surface of the transport cylinder. The cover and/or a shaft supporting the at least one gripper may include a cooling unit. In some examples, a drying unit that includes the transport cylinder may further include an electron beam for curing a printing fluid on a substrate on the transport cylinder. In some examples, a printing press may include the drying unit including the transport cylinder.Type: ApplicationFiled: January 19, 2022Publication date: July 6, 2023Inventors: Thilo HAHN, Patrick KRESS, Volker SCHARKUS, Robert STIERMAN
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Patent number: 8710269Abstract: The present invention relates to a process for preparing 3-dimethylaminopropylamine (DMAPA) by reacting 3-dimethylaminopropionitrile (DMAPN) with hydrogen in the presence of a catalyst, wherein the DMAPN used has a content of 2-(dimethylaminomethyl)glutaronitrile (DGN) of 300 ppm by weight or less, based on the DMAPN used. Furthermore, the present invention relates to mixtures of DMAPN and DGN, wherein the weight ratio of DMAPN to DGN is in the range from 1 000 000:5 to 1 000 000:250.Type: GrantFiled: July 27, 2011Date of Patent: April 29, 2014Assignee: BASF SEInventors: Wolfgang Mägerlein, Jan Eberhardt, Johann-Peter Melder, Ulrich Köhler, Thilo Hahn, Mirko Kreitschmann, Dominik Herbrecht
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Patent number: 8624075Abstract: Process for isomerizing linear alpha-olefins having from 10 to 25 carbon atoms over a heterogeneous catalyst.Type: GrantFiled: December 20, 2010Date of Patent: January 7, 2014Assignee: BASF SEInventors: Lucia Königsmann, Ekkehard Schwab, Thilo Hahn, Germain Kons
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Patent number: 8497399Abstract: A process for preparing a diamine from a corresponding aminoalkyl nitrile, which is prepared by reaction of a corresponding monoamine with a corresponding alkenyl nitrile in a continuous mode of operation, comprising the steps: a) introduction of the corresponding monoamine into a continuously conveyed reaction stream; b) introduction of the corresponding alkenyl nitrile into the reaction stream, with this already comprising the aminoalkyl nitrile on addition; c) reaction of the reaction stream in a first reaction region; d) at least partial transfer of the reaction stream into at least one second reaction region for further reaction; e) discharge of the reaction stream from the second reaction region after the reaction; f) introduction of the reaction stream discharged in step (a) into a reduction region; and g) reduction of the aminoalkyl nitrile present in the reaction stream to the corresponding diamine.Type: GrantFiled: October 17, 2011Date of Patent: July 30, 2013Assignee: BASF SEInventors: Jan Eberhardt, Thilo Hahn, Johann-Peter Melder, Gerhard Fritz, Volkmar Menger, Thomas Hill
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Patent number: 8466323Abstract: A process for preparing pure triethanolamine (TEOA) by continuously distillatively separating an ethanolamine mixture comprising TEOA and diethanolamine (DEOA), by distilling off DEOA in a distillation column (DEOA column) and supplying the resulting bottom stream comprising TEOA to a downstream column (TEOA column) in which the pure TEOA is withdrawn as a side draw stream, wherein the residence time of the ethanolamine mixture in the bottom of the DEOA column is <20 minutes.Type: GrantFiled: December 10, 2009Date of Patent: June 18, 2013Assignee: BASF SEInventors: Johann-Peter Melder, Gunther Van Cauwenberge, Tom Fremau, Jürgen Moors, Thilo Hahn, Bernd Stein
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Patent number: 8440852Abstract: The invention relates to a process for preparing tetraethylenepentamine (TEPA) by hydrogenation of diethylenetriaminediacetonitrile (DETDN) over a catalyst. If appropriate, DETDN can also be present as a constituent of an amino nitrile mixture which additionally comprises diethylenetriaminemonoacetonitrile (DETMN).Type: GrantFiled: February 27, 2008Date of Patent: May 14, 2013Assignee: BASF SEInventors: Kirsten Dahmen, Alfred Oftring, Randolf Hugo, Thilo Hahn, Katrin Baumann, Johann-Peter Melder
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Patent number: 8415500Abstract: A process for preparing amines of the formula I, by reacting a carbonyl compound of the formula II with an amine of the formula III where R1 and R2 are different and are each an organic radical which has from 1 to 20 carbon atoms and may optionally also comprise heteroatoms, R3 is a C1-C6-alkyl group and R4 is an aryl group which may be partly or fully halogenated and/or may bear from one to three radicals from the group of cyano, nitro, C1-C6-alkyl, C1-C6-haloalkyl, hydroxyl, C1-C6-hydroxyalkyl, C1-C6-alkoxy, C1-C6-haloalkoxy, hydroxycarbonyl, C1-C6-alkoxycarbonyl, C1-C6-alkylamino, di(C1-C6-alkyl)amino, aryl and aryl(C1-C6-alkyl); and * represents the S or R configuration, and ** represents the S and/or R configuration; which comprises performing the reaction in the presence of a heterogeneous imination catalyst, of a hydrogenation catalyst and of hydrogen.Type: GrantFiled: December 10, 2008Date of Patent: April 9, 2013Assignee: BASF SEInventors: Tobias Staeb, Thilo Hahn, Wolfgang Siegel
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Patent number: 8354558Abstract: Diastereoselective conversion of chiral imines of the formula I to amines of the formula II where the R1 to R4 radicals are each as defined in the description and R1 and R2 are different than one another, by converting the imine of the formula I in the presence of hydrogen and a heterogeneous copper-containing catalyst.Type: GrantFiled: December 10, 2008Date of Patent: January 15, 2013Assignee: BASF SEInventors: Wolfgang Siegel, Thilo Hahn, Tobias Staeb
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Patent number: 8299249Abstract: The invention relates to a process for preparing triethylenetetramine (TETA), which, comprises the following steps: a) reaction of ethylenediamine (EDA) with formaldehyde and hydrocyanic acid (HCN) in a molar ratio of EDA to formaldehyde to HCN of from 1:1.5:1.5 to 1:2:2 to give ethylenediaminediacetonitrile (EDDN), b) hydrogenation of the EDDN obtained in step a) in the presence of a catalyst and a solvent.Type: GrantFiled: February 28, 2008Date of Patent: October 30, 2012Assignee: BASF SEInventors: Kirsten Dahmen, Alfred Oftring, Katrin Baumann, Randolf Hugo, Thilo Hahn, Johann-Peter Melder
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Publication number: 20120271090Abstract: Process for isomerizing linear alpha-olefins having from 10 to 25 carbon atoms over a heterogeneous catalyst.Type: ApplicationFiled: December 20, 2010Publication date: October 25, 2012Applicant: BASF SEInventors: Lucia Königsmann, Ekkehard Schwab, Thilo Hahn, Germain Kons
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Patent number: 8153845Abstract: The invention relates to a process for preparing an amino nitrile mixture comprising aminoacetonitrile (AAN) and from 5 to 70% by weight of iminodiacetonitrile (IDAN), which comprises heating crude AAN which is largely free of formaldehyde cyanohydrin (FACH-free) at a temperature of from 50 to 150° C.Type: GrantFiled: February 28, 2008Date of Patent: April 10, 2012Assignee: BASF SEInventors: Alfred Oftring, Kirsten Dahmen, Thilo Hahn, Randolf Hugo, Katrin Baumann, Johann-Peter Melder
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Publication number: 20120071694Abstract: A process for preparing a diamine from a corresponding aminoalkyl nitrile, which is prepared by reaction of a corresponding monoamine with a corresponding alkenyl nitrile in a continuous mode of operation, comprising the steps: a) introduction of the corresponding monoamine into a continuously conveyed reaction stream; b) introduction of the corresponding alkenyl nitrile into the reaction stream, with this already comprising the aminoalkyl nitrile on addition; c) reaction of the reaction stream in a first reaction region; d) at least partial transfer of the reaction stream into at least one second reaction region for further reaction; e) discharge of the reaction stream from the second reaction region after the reaction; f) introduction of the reaction stream discharged in step (a) into a reduction region; and g) reduction of the aminoalkyl nitrile present in the reaction stream to the corresponding diamine.Type: ApplicationFiled: October 17, 2011Publication date: March 22, 2012Applicant: BASF SEInventors: JAN EBERHARDT, Thilo Hahn, Johann-Peter Melder, Gerhard Fritz, Volkmar Menger, Thomas Hill
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DMAPN Having a Low DGN Content and a Process for Preparing DMAPA from DMAPN Having a Low DGN Content
Publication number: 20120029225Abstract: The present invention relates to a process for preparing 3-dimethylaminopropylamine (DMAPA) by reacting 3-dimethylaminopropionitrile (DMAPN) with hydrogen in the presence of a catalyst, wherein the DMAPN used has a content of 2-(dimethylaminomethyl)glutaronitrile (DGN) of 300 ppm by weight or less, based on the DMAPN used. Furthermore, the present invention relates to mixtures of DMAPN and DGN, wherein the weight ratio of DMAPN to DGN is in the range from 1 000 000:5 to 1 000 000:250.Type: ApplicationFiled: July 27, 2011Publication date: February 2, 2012Applicant: BASF SEInventors: Wolfgang Mägerlein, Jan Eberhardt, Johann-Peter Melder, Ulrich Köhler, Thilo Hahn, Mirko Kreitschmann, Dominik Herbrecht -
Patent number: 8063239Abstract: The present invention relates to a process for preparing an aminoalkyl nitrile by reaction of a corresponding monoamine with a corresponding alkenyl nitrile in a continuous mode of operation, which comprises the steps (a) introduction of the corresponding monoamine into a continuously conveyed reaction stream; (b) introduction of the corresponding alkenyl nitrite into the reaction stream, with this already comprising the aminoalkyl nitrile on addition; (c) reaction of the reaction stream in a first reaction region; and (d) at least partial transfer of the reaction stream into at least one second reaction region for further reaction. The invention further relates to a process for preparing a diamine from the aminoalkyl nitrile, suitable apparatuses for carrying out the processes and their corresponding use.Type: GrantFiled: May 7, 2007Date of Patent: November 22, 2011Assignee: BASF SEInventors: Jan Eberhardt, Thilo Hahn, Johann-Peter Melder, Gerhard Fritz, Volkmar Menger, Thomas Hill
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Publication number: 20110257437Abstract: A process for preparing pure triethanolamine (TEOA) by continuously distillatively separating an ethanolamine mixture comprising TEOA and diethanolamine (DEOA), by distilling off DEOA in a distillation column (DEOA column) and supplying the resulting bottom stream comprising TEOA to a downstream column (TEOA column) in which the pure TEOA is withdrawn as a side draw stream, wherein the residence time of the ethanolamine mixture in the bottom of the DEOA column is <20 minutes.Type: ApplicationFiled: December 10, 2009Publication date: October 20, 2011Applicant: BASF SEInventors: Johann-Peter Melder, Gunther Van Cauwenberge, Tom Fremau, Jürgen Moors, Thilo Hahn, Bernd Stein
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Patent number: 7960591Abstract: The invention relates to a process for preparing triethylenetetramine (TETA), which comprises hydrogenating ethylenediaminediacetonitrile (EDDN) in the presence of a catalyst and a solvent.Type: GrantFiled: February 27, 2008Date of Patent: June 14, 2011Assignee: BASF SEInventors: Kirsten Dahmen, Alfred Oftring, Randolf Hugo, Katrin Baumann, Thilo Hahn, Johann-Peter Melder
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Patent number: 7960590Abstract: The invention relates to a process for preparing an ethylene amine mixture, which comprises the following steps: a) crude AAN which is largely free of formaldehyde cyanohydrin (largely FACH-free) is heated at a temperature of from 50 to 150° C. to give an amino nitrile mixture comprising aminoacetonitrile (AAN) and from 5 to 70% by weight of iminodiacetonitrile (DAN), b) hydrogenation of the amino nitrile mixture obtained in step a) in the presence of a catalyst. Ethylenediamine (EDA) and/or diethylenetriamine (DETA) and also, if appropriate, further ethylene amines can be isolated from the ethylene amine mixtures obtained.Type: GrantFiled: February 28, 2008Date of Patent: June 14, 2011Assignee: BASF SEInventors: Kirsten Dahmen, Alfred Oftring, Randolf Hugo, Thilo Hahn, Katrin Baumann, Johann-Peter Melder
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Patent number: 7915454Abstract: The invention relates to a process for preparing ethylenediamine by hydrogenation of aminoacetonitrile over a catalyst, wherein the hydrogenation is carried out in a solution comprising aminoacetonitrile, water in a proportion of from 0 to 60% by weight and a solvent and the aminoacetonitrile comprised in the solution is fed into the reaction vessel at a rate which is not greater than the rate at which the aminoacetonitrile reacts with hydrogen in the hydrogenation.Type: GrantFiled: February 28, 2008Date of Patent: March 29, 2011Assignee: BASF SEInventors: Alfred Oftring, Kirsten Dahmen, Randolf Hugo, Thilo Hahn, Katrin Baumann, Johann-Peter Melder
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Patent number: RE45240Abstract: A process for preparing pure triethanolamine (TEOA) by continuously distillatively separating an ethanolamine mixture comprising TEOA and diethanolamine (DEOA), by distilling off DEOA in a distillation column (DEOA column) and supplying the resulting bottom stream comprising TEOA to a downstream column (TEOA column) in which the pure TEOA is withdrawn as a side draw stream, wherein the residence time of the ethanolamine mixture in the bottom of the DEOA column is <20 minutes.Type: GrantFiled: November 21, 2013Date of Patent: November 11, 2014Assignee: BASF SEInventors: Johann-Peter Melder, Gunther Van Cauwenberge, Tom Fremau, Jürgen Moors, Thilo Hahn, Bernd Stein