Patents by Inventor Ansgar Gereon Altenhoff
Ansgar Gereon Altenhoff 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: 20170057907Abstract: In a process for effecting reductive amination by reacting a carbonyl compound with a secondary amine and hydrogen, the reaction is carried out as a continuous operation and the reaction mixture comprising the carbonyl compound, the secondary amine and hydrogen is contacted first with an acidic fixed bed and then with a fixed bed of hydrogenation catalyst (hereinafter referred to as a hydrogenation fixed bed).Type: ApplicationFiled: February 2, 2015Publication date: March 2, 2017Applicant: BASF SEInventors: Christian EIDAMSHAUS, Ansgar Gereon ALTENHOFF
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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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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: 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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Patent number: 8709544Abstract: The present invention relates to coating compositions for polyurethane coating materials that feature new catalysts.Type: GrantFiled: November 22, 2010Date of Patent: April 29, 2014Assignee: BASF SEInventors: Oliver Neu, Michael Siemer, Ansgar Gereon Altenhoff, Harald Schaefer, Angelika Maria Steinbrecher
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Patent number: 8703992Abstract: Process for the preparation of aromatic and heteroaromatic carboxylic acids, carboxylic acid esters and carboxamides by the reaction of aromatic or heteroaromatic halides R—Xn, in which n=integer from 1 to 6, R=substituted or unsubstituted and aromatic or heteroaromatic radical and X=chlorine, bromine or iodine atom, with carbon monoxide and water, ammonia, alcohols or amines in the presence of bases and zero-valent or divalent palladium compounds and bidentate diphosphanes or complexes of zero-valent or divalent palladium with bidentate diphosphanes, in which use is made of bidentate diphosphanes (R1—)(R2—)P—Y—P(—R3)(—R4) in which R1 to R4=unsubstituted aryl radicals or aryl radicals substituted with at least one radical exhibiting a positive resonance effect or a positive inductive effect, or unsubstituted or substituted cycloalkyl radicals, and Y=hydrocarbon group with a total of 2 to 20 carbon atoms, in which at least one of the carbon atoms carries only one or no hydrogen atom as substituent; except foType: GrantFiled: May 25, 2009Date of Patent: April 22, 2014Assignee: BASF SEInventors: Nina Challand, Ansgar Gereon Altenhoff, Joachim Schmidt-Leithoff, Kathrin Wissel-Stoll, Michael Rack, Joachim Rheinheimer
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Patent number: 8586794Abstract: The present invention relates to 5-isopropyl-3-aminomethyl-2-methyl-1-aminocyclohexane (carvonediamine) and to a process for preparation thereof by a) reacting carvone with hydrogen cyanide, b) then reacting the carvonenitrile obtained in stage a) with ammonia in the presence of an imine formation catalyst and c) then reacting the carvonenitrile imine-containing reaction mixture obtained in stage b) with hydrogen and ammonia over hydrogenation catalysts. The present invention further relates to the use of carvonediamine as a hardener for epoxy resins, as an intermediate in the preparation of diisocyanates, as a starter in the preparation of polyetherols and/or as a monomer for polyamide preparation.Type: GrantFiled: July 13, 2009Date of Patent: November 19, 2013Assignee: BASF SEInventors: Martin Ernst, Alfred Oftring, Kathrin Wissel-Stoll, Oemer Uensal, Stephan Freyer, Ansgar Gereon Altenhoff, Wolfgang Staffel
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Patent number: 8461390Abstract: A process for preparing substituted biphenyls of the formula I where R1=nitro or amino, R2=cyano, halogen, C1-C4-haloalkyl, C1-C4-haloalkoxy or C1-C4-haloalkylthio, n=from 0 to 3, and R3=hydrogen, cyano or halogen, which comprises reacting a halobenzene of the formula II in which Hal is chlorine or bromine, in the presence of a base and of a palladium catalyst which consists of palladium and a bidentate phosphorus ligand of the formula III where Ar is phenyl which is substituted if desired and R4 and R5 are each C1-C8-alkyl or C3-C6-cycloalkyl or together form a 2- to 7-membered bridge which may, if desired, bear a C1-C6-alkyl substituent, in a solvent or diluent, with a phenylboronic acid IVa a diphenylborinic acid IVb or a mixture of IVa and IVb.Type: GrantFiled: June 22, 2009Date of Patent: June 11, 2013Assignee: BASF SEInventors: Sebastian Peer Smidt, Volker Maywald, Kathrin Wissel-Stoll, Joachim Schmidt-Leithoff, Ansgar Gereon Altenhoff, Michael Keil
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Publication number: 20120288632Abstract: The present invention relates to coating compositions for polyurethane coating materials that feature new catalysts.Type: ApplicationFiled: November 22, 2010Publication date: November 15, 2012Applicant: BASF SEInventors: Oliver Neu, Michael Siemer, Ansgar Gereon Altenhoff, Harald Schaefer, Angelika Maria Steinbrecher
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Patent number: 8153820Abstract: The present invention relates to a process for preparing N-substituted (3-dihalomethylpyrazol-4-yl)carboxamides of the formula (I) in which R1 is optionally substituted phenyl or C3-C7-cycloalkyl, R1a is hydrogen or fluorine, or R1a together with R1 is optionally substituted C3-C5-alkanediyl or C5-C7-cycloalkanediyl, R2 is C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl or C1-C4-alkoxy-C1-C2-alkyl, X is F or Cl and n is 0, 1, 2 or 3; which comprises A) providing a compound of the formula (II) in which X is F or Cl, Y is Cl or Br and R2 has one of the meanings given above and B) reacting a compound of the formula (II) with carbon monoxide and a compound of the formula (III) in which R1, R1a and n have one of the meanings given above; in the presence of a palladium catalyst; to intermediates used for the preparation according to the process according to the invention, and also to processes for their preparation.Type: GrantFiled: May 30, 2008Date of Patent: April 10, 2012Assignee: BASF SEInventors: Thomas Zierke, Joachim Rheinheimer, Michael Rack, Sebastian Peer Smidt, Ansgar Gereon Altenhoff, Joachim Schmidt-Leithoff, Nina Challand
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Publication number: 20120071690Abstract: A process is proposed for production of formamides by reaction of carbon dioxide with hydrogen in a hydrogenation reactor I in the presence of a catalyst comprising an element from group 8, 9 or 10 of the periodic table, a tertiary amine comprising at least 6 carbon atoms per molecule, and also a polar solvent, to form formic acid-amine adducts as intermediates, which are subsequently reacted with ammonia or amines in a reactor to obtain a two-phase liquid reaction effluent from which the liquid phase enriched with the formamides is distillatively separated to recover the formamide.Type: ApplicationFiled: September 16, 2011Publication date: March 22, 2012Applicant: BASF SEInventors: Marek Pazicky, Thomas Schaub, Ansgar Gereon Altenhoff, Donata Maria Fries, Rocco Paciello
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Publication number: 20110172456Abstract: Process for the preparation of aromatic and heteroaromatic carboxylic acids, carboxylic acid esters and carboxamides by the reaction of aromatic or heteroaromatic halides R—Xn, in which n=integer from 1 to 6, R=substituted or unsubstituted and aromatic or heteroaromatic radical and X=chlorine, bromine or iodine atom, with carbon monoxide and water, ammonia, alcohols or amines in the presence of bases and zero-valent or divalent palladium compounds and bidentate diphosphanes or complexes of zero-valent or divalent palladium with bidentate diphosphanes, in which use is made of bidentate diphosphanes (R1—)(R2—)P—Y—P(—R3)(—R4) in which R1 to R4=unsubstituted aryl radicals or aryl radicals substituted with at least one radical exhibiting a positive resonance effect or a positive inductive effect, or unsubstituted or substituted cycloalkyl radicals, and Y=hydrocarbon group with a total of 2 to 20 carbon atoms, in which at least one of the carbon atoms carries only one or no hydrogen atom as substituent; except fType: ApplicationFiled: May 25, 2009Publication date: July 14, 2011Applicant: BASF SEInventors: Nina Challand, Ansgar Gereon Altenhoff, Joachim Schmidt-Leithoff, Kathrin Wissel-Stoll, Michael Rack, Joachim Rheinheimer
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Publication number: 20110124918Abstract: The present invention relates to 5-isopropyl-3-aminomethyl-2-methyl-1-aminocyclohexane (carvonediamine) and to a process for preparation thereof by a) reacting carvone with hydrogen cyanide, b) then reacting the carvonenitrile obtained in stage a) with ammonia in the presence of an imine formation catalyst and c) then reacting the carvonenitrile imine-containing reaction mixture obtained in stage b) with hydrogen and ammonia over hydrogenation catalysts. The present invention further relates to the use of carvonediamine as a hardener for epoxy resins, as an intermediate in the preparation of diisocyanates, as a starter in the preparation of polyetherols and/or as a monomer for polyamide preparation.Type: ApplicationFiled: July 13, 2009Publication date: May 26, 2011Applicant: BASF SEInventors: Martin Ernst, Alfred Oftring, Kathrin Wissel-Stoll, Oemer Uensal, Stephan Freyer, Ansgar Gereon Altenhoff, Wolfgang Staffel
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Publication number: 20110105766Abstract: A process for preparing substituted biphenyls of the formula I where R1=nitro or amino, R2=cyano, halogen, C1-C4-haloalkyl, C1-C4-haloalkoxy or C1-C4-haloalkylthio, n=from 0 to 3, and R3=hydrogen, cyano or halogen, which comprises reacting a halobenzene of the formula II in which Hal is chlorine or bromine, in the presence of a base and of a palladium catalyst which consists of palladium and a bidentate phosphorus ligand of the formula III where Ar is phenyl which is substituted if desired and R4 and R5 are each C1-C8-alkyl or C3-C6-cycloalkyl or together form a 2- to 7-membered bridge which may, if desired, bear a C1-C6-alkyl substituent, in a solvent or diluent, with a phenylboronic acid IVa a diphenylborinic acid IVb or a mixture of IVa and IVb.Type: ApplicationFiled: June 22, 2009Publication date: May 5, 2011Applicant: BASF SEInventors: Sebastian Peer Smidt, Volker Maywald, Kathrin Wissel-Stoll, Joachim Schmidt-Leithoff, Ansgar Gereon Altenhoff, Michael Keil
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Publication number: 20100174094Abstract: The present invention relates to a process for preparing N-substituted (3-dihalomethylpyrazol-4-yl)carboxamides of the formula (I) in which R1 is optionally substituted phenyl or C3-C7-cycloalkyl, R1a is hydrogen or fluorine, or R1a together with R1 is optionally substituted C3-C5-alkanediyl or C5-C7-cycloalkanediyl, R2 is C1-C6-alkyl, C2-C6-alkenyl, C2-C6-alkynyl or C1-C4-alkoxy-C1-C2-alkyl, X is F or Cl and n is 0, 1, 2 or 3; which comprises A) providing a compound of the formula (II) in which X is F or Cl, Y is Cl or Br and R2 has one of the meanings given above and B) reacting a compound of the formula (II) with carbon monoxide and a compound of the formula (III) in which R1, R1a and n have one of the meanings given above; in the presence of a palladium catalyst; to intermediates used for the preparation according to the process according to the invention, and also to processes for their preparation.Type: ApplicationFiled: May 30, 2008Publication date: July 8, 2010Applicant: BASF SEInventors: Thomas Zierke, Joachim Rheinheimer, Michael Rack, Sebastian Peer Smidt, Ansgar Gereon Altenhoff, Joachim Schmidt-Leithoff, Nina Challand
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Patent number: 7750194Abstract: A process for preparing alkanols (I) selected from the group consisting of isopropanol and 2-butanol from the corresponding alkanes (II) selected from the group consisting of propane and n-butane, comprising the steps of: A) providing a starting gas stream a comprising the alkane (II); B) feeding the starting gas stream a comprising the alkane (II) into a dehydrogenation zone and subjecting the alkane (II) to a dehydrogenation to the alkene (III) to obtain a product gas stream b comprising the alkene (III) and unconverted alkane (II), with or without high boilers, steam, hydrogen and low boilers; C) at least compressing product gas stream b, optionally separating product gas stream b into an aqueous phase c1, a phase c2 comprising the alkene (III) and the alkane (II), with or without high boilers, and a gas phase c3 comprising hydrogen and low boilers; D) reacting product gas stream b or the phase c2 comprising alkene (III) and alkane (II) with an organic acid (IV) in an esterification zone to obtain a produType: GrantFiled: July 16, 2007Date of Patent: July 6, 2010Assignee: BASF AktiengesellschaftInventors: Georg Degen, Sven Crone, Ralf Boehling, Ansgar Gereon Altenhoff, Wolfgang Rohde, Jochen Buerkle, Goetz-Peter Schindler, Thomas Holtmann, Markus Schmitt
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Publication number: 20100048960Abstract: A process for preparing alkanols (I) selected from the group consisting of isopropanol and 2-butanol from the corresponding alkanes (II) selected from the group consisting of propane and n-butane, comprising the steps of: A) providing a starting gas stream a comprising the alkane (II); B) feeding the starting gas stream a comprising the alkane (II) into a dehydrogenation zone and subjecting the alkane (II) to a dehydrogenation to the alkene (III) to obtain a product gas stream b comprising the alkene (III) and unconverted alkane (II), with or without high boilers, steam, hydrogen and low boilers; C) at least compressing product gas stream b, optionally separating product gas stream b into an aqueous phase c1, a phase c2 comprising the alkene (III) and the alkane (II), with or without high boilers, and a gas phase c3 comprising hydrogen and low boilers; D) reacting product gas stream b or the phase c2 comprising alkene (III) and alkane (II) with an organic acid (IV) in an esterification zone to obtain a produType: ApplicationFiled: July 16, 2007Publication date: February 25, 2010Applicant: BASF AktiengesellschaftInventors: Georg Degen, Sven Crone, Ralf Boehling, Ansgar Gereon Altenhoff, Wolfgang Rohde, Jochen Buerkle, Goetz-Peter Schindler, Thomas Holtmann, Markus Schmitt