Patents by Inventor Nina Challand
Nina Challand 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: 20150305372Abstract: The invention relates to the use of natural or synthetic green fodder flavors as feed additive for livestock, in particular for affecting the eating behavior of livestock, corresponding methods for affecting the eating behavior of livestock, and also feedstuff additives usable therefor.Type: ApplicationFiled: April 27, 2015Publication date: October 29, 2015Inventors: Arnulf TRÖSCHER, Nina CHALLAND, Johanna TROESCHER, Franziska TROESCHER
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Patent number: 8981093Abstract: Process for preparing piperazine of the formula I by reacting diethanolamine (DEOA) of the formula II with ammonia in the presence of hydrogen and a supported, metal-containing catalyst has been found, wherein the catalytically active mass of the catalyst, prior to its reduction with hydrogen, comprises oxygen-containing compounds of aluminum, copper, nickel and cobalt and in the range from 0.2 to 5.0% by weight of oxygen-containing compounds of tin, calculated as SnO, and the reaction is carried out in the liquid phase at an absolute pressure in the range from 160 to 220 bar, a temperature in the range from 180 to 220° C., using ammonia in a molar ratio to DEOA used of from 5 to 25 and in the presence of 0.2 to 9.0% by weight of hydrogen, based on the total amount of DEOA used and ammonia.Type: GrantFiled: June 5, 2013Date of Patent: March 17, 2015Assignee: BASF SEInventors: Roland Bou Chedid, Johann-Peter Melder, Ulrich Abel, Roman Dostalek, Nina Challand, Bernd Stein, Michael Jödecke
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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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Publication number: 20130331574Abstract: Process for preparing piperazine of the formula I by reacting diethanolamine (DEOA) of the formula II with ammonia (NH3) in the presence of hydrogen and a supported, metal-containing catalyst, wherein the catalytically active mass of the catalyst, prior to its reduction with hydrogen, comprises 20 to 85% by weight of oxygen-containing compounds of zirconium, calculated as ZrO2, 1 to 30% by weight of oxygen-containing compounds of copper, calculated as CuO, 14 to 70% by weight of oxygen-containing compounds of nickel, calculated as NiO, and 0 to 5% by weight of oxygen-containing compounds of molybdenum, calculated as MoO3, and the reaction is carried out in the liquid phase at an absolute pressure in the range from 160 to 220 bar, a temperature in the range from 180 to 220° C., using ammonia in a molar ratio to DEOA used of from 5 to 20 and in the presence of 0.2 to 9.0% by weight of hydrogen, based on the total amount of DEOA used and ammonia.Type: ApplicationFiled: June 5, 2013Publication date: December 12, 2013Inventors: Roland Bou Chedid, Johann-Peter Melder, Ulrich Abel, Roman Dostalek, Nina Challand, Bernd Stein, Michael Jodecke
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Publication number: 20130331573Abstract: Process for preparing piperazine of the formula I by reacting diethanolamine (DEOA) of the formula II with ammonia in the presence of hydrogen and a supported, metal-containing catalyst has been found, wherein the catalytically active mass of the catalyst, prior to its reduction with hydrogen, comprises oxygen-containing compounds of aluminum, copper, nickel and cobalt and in the range from 0.2 to 5.0% by weight of oxygen-containing compounds of tin, calculated as SnO, and the reaction is carried out in the liquid phase at an absolute pressure in the range from 160 to 220 bar, a temperature in the range from 180 to 220° C., using ammonia in a molar ratio to DEOA used of from 5 to 25 and in the presence of 0.2 to 9.0% by weight of hydrogen, based on the total amount of DEOA used and ammonia.Type: ApplicationFiled: June 5, 2013Publication date: December 12, 2013Inventors: Roland Bou Chedid, Johann-Peter Melder, Ulrich Abel, Roman Dostalek, Nina Challand, Bernd Stein, Michael Jödecke
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Patent number: 8436169Abstract: Process for preparing 1,4-bishydroxyethylpiperazine (BHEPIP) of the formula I wherein diethanolamine (DEOA) of the formula II is reacted in the liquid phase in a reactor at a temperature in the range from 130 to 300° C. in the presence of a copper-comprising, chromium-free heterogeneous catalyst.Type: GrantFiled: October 28, 2011Date of Patent: May 7, 2013Assignee: BASF SEInventors: Christof Wilhelm Wigbers, Nina Challand, Johann-Peter Melder, Udo Rheude, Roman Dostalek
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Publication number: 20120108816Abstract: Process for preparing 1,4-bishydroxyethylpiperazine (BHEPIP) of the formula I wherein diethanolamine (DEOA) of the formula II is reacted in the liquid phase in a reactor at a temperature in the range from 130 to 300° C. in the presence of a copper-comprising, chromium-free heterogeneous catalyst.Type: ApplicationFiled: October 28, 2011Publication date: May 3, 2012Applicant: BASF SEInventors: Christof Wilhelm Wigbers, Nina Challand, Johann-Peter Melder, Udo Rheude, Roman Dostalek
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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: 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: 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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Publication number: 20100063320Abstract: The invention relates to a process for preparing formic acid, in which catalytic hydrogenation of carbon dioxide with hydrogen over a catalyst which comprises a metal of groups 8 to 10 of the Periodic Table in the presence of a primary, secondary and/or tertiary amine generates the corresponding ammonium formate and the ammonium formate is split by heating into formic acid and the amine, which comprises selecting the primary, secondary or tertiary amine from the amines of the formula I or mixtures thereof where R1 to R3 are the same or different and are each hydrogen, linear or branched alkyl radicals having from 1 to 18 carbon atoms, cycloaliphatic radicals having from 5 to 7 carbon atoms, aryl radicals and/or arylalkyl radicals, and at least one of the R1 to R3 radicals bears a hydroxyl group, and performing the hydrogenation in a solvent which has a boiling point of 105° C.Type: ApplicationFiled: March 18, 2008Publication date: March 11, 2010Inventors: Nina Challand, Xavier Sava, Michael Röper
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Publication number: 20080249267Abstract: Preparation of highly reactive isobutene homo- or copolymers having Mn=from 500 to 45 000 by polymerizing isobutene in the liquid phase in the presence of a dissolved, dispersed or supported boron-containing catalyst complex, by using, as the catalyst complex, a protic acid compound I [H+]m+1[R1R2R3B—(-Am+—BR5R6—)n—R4](m+1)?.Lx ??(I) R1 to R6 each independently aliphatic, heterocyclic or aromatic, fluorinated hydrocarbon radicals having in each case from 1 to 18 carbon atoms, or silyl groups comprising C1 to C18 hydrocarbon radicals, A nitrogen-containing bridging member which forms covalent bonds to the boron atoms via its nitrogen atoms, L neutral solvent molecules, n=0 or 1, m=0 or 1 and x is ?0.Type: ApplicationFiled: November 15, 2006Publication date: October 9, 2008Applicant: BASF SEInventors: Phillip Hanefeld, Volker Bohm, Marcus Sigl, Nina Challand, Michael Roper, Hans-Michael Walter, Brigitte Voit, Fritz Elmar Kuehn, Ahmed Hijazi, Radha Krishnan Narayanan
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Publication number: 20080249264Abstract: Preparation of highly reactive isobutene homo- or copolymers with Mn=from 500 to 1 000 000 by polymerizing isobutene from technical C4 hydrocarbon streams having an isobutene content of from 1 to 90% by weight in the liquid phase in the presence of a dissolved, dispersed or supported catalyst complex, by using, as the catalyst complex, a protic acid compound I [H+]kYk?.Lx ??(I) Yk? weakly coordinating k-valent anion which comprises at least one hydrocarbon moiety, L neutral solvent molecules and x?0.Type: ApplicationFiled: November 15, 2006Publication date: October 9, 2008Applicant: BASF SEInventors: Phillip Hanefeld, Volker Bohm, Marcus Sigl, Nina Challand, Michael Roeper, Hans-Michael Walter