Patents by Inventor Kirsten Dahmen
Kirsten Dahmen 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: 10329237Abstract: The present invention relates to a method for hydrogenating aromatic compounds with hydrogen in the presence of a catalyst, in which the catalyst comprises ruthenium on a zirconium oxide support material, and also the use of a catalyst comprising ruthenium on a zirconium oxide support material for hydrogenating aromatic compounds.Type: GrantFiled: December 10, 2014Date of Patent: June 25, 2019Assignee: BASF SEInventors: Bernd Bastian Schaack, Martin Bock, Kirsten Dahmen
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Patent number: 9873658Abstract: The present invention relates to a process for hydrogenating 4,4?-methylenedianiline and/or polymeric MDA with hydrogen in the presence of a catalyst comprising ruthenium on a zirconium oxide support material, and also to the use of a catalyst comprising ruthenium on a zirconium oxide support material for hydrogenating 4,4?-methylenedianiline and/or polymeric MDA.Type: GrantFiled: December 10, 2014Date of Patent: January 23, 2018Assignee: BASF SEInventors: Andreas Weickgenannt, Bernd Bastian Schaack, Barbara Wucher, Alexander Panchenko, Frank Hettche, Martin Bock, Aik Meam Tan, Kirsten Dahmen
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Patent number: 9695121Abstract: The present invention relates to 2,6-bis(aminomethyl)piperidine derivatives as such (in the following text abbreviated to “2,6-BAMP derivatives”) which are defined by the general formula (I) shown in the following text. In addition, the present invention relates to a process for preparing such 2,6-BAMP derivatives by hydrogenation of the corresponding 2,6-dicyanopiperidine derivatives (hereinafter abbreviated to “2,6-DCP derivatives”) in the presence of a catalyst. The present invention further provides for the use of the 2,6-BAMP derivatives of the invention as hardeners for epoxy resins, as intermediate in the preparation of diisocyanates, which play an important role in the production of polyurethanes, as starters in the preparation of polyetherols and/or as monomers for polyamide production. The present invention further relates to the diisocyanates as such prepared from the 2,6-BAMP derivatives and also the corresponding preparative process.Type: GrantFiled: January 27, 2014Date of Patent: July 4, 2017Assignee: BASF SEInventors: Stephanie Jaegli, Thomas Schmidt, Alfred Oftring, Alexander Panchenko, Kirsten Dahmen, Oliver Molt
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Patent number: 9650542Abstract: The present invention relates to the use of substantially linear polypropyleneimine as a hardener for epoxy resins, and also to a corresponding curable composition, to the curing thereof, and to the cured epoxy resin obtainable therefrom.Type: GrantFiled: July 29, 2014Date of Patent: May 16, 2017Assignee: BASF SEInventors: Christoph Mueller, Christian Mueller, Kirsten Dahmen, Alexander Panchenko, Ansgar Gereon Altenhoff, Monika Charrak, Andreas Kunst, Michael Henningsen, Achim Kaffee
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Publication number: 20160326094Abstract: The present invention relates to a process for hydrogenating 4,4?-methylenedianiline and/or polymeric MDA with hydrogen in the presence of a catalyst comprising ruthenium on a zirconium oxide support material, and also to the use of a catalyst comprising ruthenium on a zirconium oxide support material for hydrogenating 4,4?-methylenedianiline and/or polymeric MDA.Type: ApplicationFiled: December 10, 2014Publication date: November 10, 2016Applicant: BASF SEInventors: Andreas WEICKGENANNT, Bernd Bastian SCHAACK, Barbara WUCHER, Alexander PANCHENKO, Frank HETTCHE, Martin BOCK, Aik Meam TAN, Kirsten DAHMEN
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Publication number: 20160304436Abstract: The present invention relates to a method for hydrogenating aromatic compounds with hydrogen in the presence of a catalyst, in which the catalyst comprises ruthenium on a zirconium oxide support material, and also the use of a catalyst comprising ruthenium on a zirconium oxide support material for hydrogenating aromatic compounds.Type: ApplicationFiled: December 10, 2014Publication date: October 20, 2016Applicant: BASF SEInventors: Bernd Bastian SCHAACK, Martin BOCK, Kirsten DAHMEN
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Publication number: 20160185896Abstract: The present invention relates to the use of 2,5-bisaminomethylfuran as hardener for resin components made of epoxy resin and reactive diluent, and also to a corresponding curable composition, curing thereof, and the cured epoxy resin obtainable therefrom. The present invention further relates to the use of 2,5-bisaminomethylfuran as hardener for the production of epoxy-resin-based coatings, in particular of floor coatings with early-stage water resistance.Type: ApplicationFiled: July 29, 2014Publication date: June 30, 2016Applicant: BASF SEInventors: Alexander PANCHENKO, Monika CHARRAK, Kirsten DAHMEN, Marion BRINKS, Mathias SCHELWIES, Benoit BLANK, Markus PIEPENBRINK, Rene BACKES, Christian KRAUSCHE
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Publication number: 20160024344Abstract: The present invention relates to the use of substantially linear polypropyleneimine as a hardener for epoxy resins, and also to a corresponding curable composition, to the curing thereof, and to the cured epoxy resin obtainable therefrom.Type: ApplicationFiled: July 29, 2014Publication date: January 28, 2016Applicant: BASF SEInventors: Christoph MUELLER, Christian MUELLER, Kirsten DAHMEN, Alexander PANCHENKO, Ansgar Gereon ALTENHOFF, Monika CHARRAK, Andreas KUNST, Michael HENNINGSEN, Achim KAFFEE
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Publication number: 20150353491Abstract: The present invention relates to 2,6-bis(aminomethyl)piperidine derivatives as such (in the following text abbreviated to “2,6-BAMP derivatives”) which are defined by the general formula (I) shown in the following text. In addition, the present invention relates to a process for preparing such 2,6-BAMP derivatives by hydrogenation of the corresponding 2,6-dicyanopiperidine derivatives (hereinafter abbreviated to “2,6-DCP derivatives”) in the presence of a catalyst. The present invention further provides for the use of the 2,6-BAMP derivatives of the invention as hardeners for epoxy resins, as intermediate in the preparation of diisocyanates, which play an important role in the production of polyurethanes, as starters in the preparation of polyetherols and/or as monomers for polyamide production. The present invention further relates to the diisocyanates as such prepared from the 2,6-BAMP derivatives and also the corresponding preparative process.Type: ApplicationFiled: January 27, 2014Publication date: December 10, 2015Applicant: BASF SEInventors: Stephanie JAEGLI, Thomas SCHMIDT, Alfred OFTRING, Alexander PANCHENKO, Kirsten DAHMEN, Oliver MOLT
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Patent number: 8987518Abstract: The present invention relates to polyamines and to a process for preparing polyamines.Type: GrantFiled: February 26, 2014Date of Patent: March 24, 2015Assignee: BASF SEInventors: Ansgar Gereon Altenhoff, Christoph Mueller, Christian Mueller, Andreas Kunst, Thomas Reissner, Kirsten Dahmen
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Publication number: 20150018457Abstract: The present invention relates to an amine composition comprising linear triethylenetetramine and one or more amine compounds selected from the group consisting of tertiary amines derived from the condensation of ethylenediamine and methyl-substituted compounds derived from linear triethylenetetramine as well as a method of production for said composition. The present invention also relates to the use of linear triethylenetetramine or an amine composition according to the invention as amine curing agents. The present invention also relates to amine curing agent compositions comprising linear triethyienetetramine as well as to curable compositions comprising linear triethylenetetramine and to a method for producing said curable compositions. Additionally, the present invention relates to a cured epoxy resin comprising linear triethylenetetramine, especially a reinforced composite, and a method for producing said cured epoxy resins.Type: ApplicationFiled: September 29, 2014Publication date: January 15, 2015Inventors: DOMINIC SUTER, Manfred Kinscherff, Kirsten Dahmen, Hendrik Heising, Achim Kaffee, Johann-Peter Melder, Boris Buschhaus, Kevin Huyghe, Gunther van Cauwenberge
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Publication number: 20140243557Abstract: The present invention relates to polyamines and to a process for preparing polyamines.Type: ApplicationFiled: February 26, 2014Publication date: August 28, 2014Applicant: BASF SEInventors: Ansgar Gereon ALTENHOFF, Christoph MUELLER, Christian MUELLER, Andreas KUNST, Thomas REISSNER, Kirsten DAHMEN
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Publication number: 20140213697Abstract: The present invention relates to a curable composition which comprises epoxy resin, epoxy-group-bearing reactive diluent and the hardener 2,2?,6,6?-tetramethyl-4,4?-methylenebis(cyclohexylamine), curing thereof, and the cured epoxy resin obtainable therefrom, and the use of 2,2?,6,6?-tetramethyl-4,4?-methylenebis(cyclohexylamine) as a hardener for epoxy resins in curable compositions with epoxy-group-bearing reactive diluent.Type: ApplicationFiled: January 27, 2014Publication date: July 31, 2014Applicant: BASF SEInventors: Achim KAFFEE, Miran YU, Monika CHARRAK, Kirsten DAHMEN, Veit STEGMANN, Gerd HADERLEIN, Alexander PANCHENKO
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Patent number: 8592632Abstract: The present invention relates to a process for preparing a cyclic diamine, comprising the reaction of at least one cyclic alkene with a gas mixture (G) comprising dinitrogen the subsequent conversion of monoxide to give at least one cyclic ketone and then converting the at least one cyclic ketone to a cyclic diamine. The invention also relates to the use of a cyclic diamine with primary and secondary amine functions thus obtained to prepare polyamides and polyurethanes.Type: GrantFiled: November 6, 2009Date of Patent: November 26, 2013Assignee: BASF SEInventors: Kirsten Dahmen, Martin Ernst, Michael Limbach, Johann-Peter Melder, Beatrice Rössler-Feigel, Joaquim Henrique Teles
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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: 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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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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Patent number: 8142618Abstract: A process comprising: continuously distilling a crude xylylenediamine in a column to form a pure xylylenediamine and a bottom product, wherein the column comprises a distillation column having a side draw and the distillation column is operated under a reduced pressure and a bottom temperature of 185° C. or less; drawing off the pure xylylenediamine from the side draw; evaporatively concentrating the bottom product of the distillation column in an additional evaporation stage to form a condensate; and returning the condensate into the distillation column.Type: GrantFiled: January 24, 2007Date of Patent: March 27, 2012Assignee: BASF AktiengesellschaftInventors: Randolf Hugo, Kirsten Dahmen, Sabine Huber
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Publication number: 20110218270Abstract: The present invention relates to an amine composition comprising linear triethylene-tetramine and one or more amine compounds selected from the group consisting of tertiary amines derived from the condensation of ethylenediamine and methyl-substituted compounds derived from linear triethylenetetramine as well as a method of production for said composition. The present invention also relates to the use of linear triethylenetetramine or an amine composition according to the invention as amine curing agents. The present invention also relates to amine curing agent compositions comprising linear triethylenetetramine as well as to curable compositions comprising linear triethylenetetramine and to a method for producing said curable compositions. Additionally, the present invention relates to a cured epoxy resin comprising linear triethylenetetramine, especially a reinforced composite, and a method for producing said cured epoxy resins.Type: ApplicationFiled: March 2, 2011Publication date: September 8, 2011Applicant: BASF SEInventors: DOMINIC SUTER, Manfred Kinscherff, Kirsten Dahmen, Hendrik Heising, Achim Kaffee, Johann-Peter Melder, Boris Buschhaus, Kevin Huyghe, Gunther van Cauwenberge
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Publication number: 20110218323Abstract: The present invention relates to a process for preparing a cyclic diamine, comprising the reaction of at least one cyclic alkene with a gas mixture (G) comprising dinitrogen the subsequent conversion of monoxide to give at least one cyclic ketone and then converting the at least one cyclic ketone to a cyclic diamine. The invention also relates to the use of a cyclic diamine with primary and secondary amine functions thus obtained to prepare polyamides and polyurethanes.Type: ApplicationFiled: November 6, 2009Publication date: September 8, 2011Applicant: Basf SEInventors: Kirsten Dahmen, Martin Ernst, Michael Limbach, Johann-Peter Melder, Beatrice Rössler-Feigel, Joaquim Henrique Teles