Patents by Inventor Heinz Rutter
Heinz Rutter 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: 8193390Abstract: A process for preparing N,N-dimethylacetamide (DMAC) by continuously reacting methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a basic catalyst, wherein MeOAc is used in the form of a methanolic solution and the continuous distillative workup is effected in such a way that methanol and any other low boilers are initially removed overhead in a column A and the bottom effluent of column A is fed to a column B in which DMAC is removed via a side draw a purity of ?99.7% by weight.Type: GrantFiled: December 3, 2005Date of Patent: June 5, 2012Assignee: BASF SEInventors: Horst Grafmans, Steffen Maas, Alexander Weck, Heinz Rütter, Michael Schulz, Karl-Heinz Roβ
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Publication number: 20110082316Abstract: A process for preparing N,N-dimethylacetamide (DMAC) by continuously reacting methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a basic catalyst, wherein MeOAc is used in the form of a methanolic solution which is obtained as a byproduct in the preparation of polyTHF by transesterifying polyTHF diacetate with methanol.Type: ApplicationFiled: December 14, 2010Publication date: April 7, 2011Applicant: BASFAktiengesellschaftInventors: Horst Grafmans, Steffen Maas, Alexander Weck, Heinz Rütter, Michael Schulz, Karl-Heinz Roß
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Publication number: 20100130781Abstract: A process for preparing N,N-dimethylacetamide (DMAC) by continuously reacting methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a basic catalyst, wherein MeOAc is used in the form of a methanolic solution and the continuous distillative workup is effected in such a way that methanol and any other low boilers are initially removed overhead in a column A and the bottom effluent of column A is fed to a column B in which DMAC is removed via a side draw a purity of ?99.7% by weight.Type: ApplicationFiled: December 3, 2005Publication date: May 27, 2010Applicant: BASF AktiengesellschaftInventors: Horst Grafmans, Steffen Maas, Alexander Weck, Heinz Rütter, Michael Schulz, Karl-Heinz Roß
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Patent number: 7642382Abstract: Processes comprising: (a) providing a first reactant comprising a bioethanol; and (b) reacting the first reactant with a second reactant comprising a component selected from the group consisting of ammonia, primary amines, secondary amines and mixtures thereof, in the presence of hydrogen and a catalytically effective amount of a heterogeneous hydrogenation/dehydrogenation catalyst to form an ethylamine; wherein the catalyst has been activated at a temperature of 100 to 500° C. for at least 25 minutes; wherein prior to activation the catalyst comprises: (i) 20 to 65% by weight of a support material comprising one or both of zirconium dioxide (ZrO2) and aluminum oxide (Al2O3), (ii) 1 to 30% by weight of oxygen-comprising compounds of copper, calculated as CuO, and (iii) 21 to 70% by weight of oxygen-comprising compounds of nickel, calculated as NiO; and wherein after activation the catalyst has a CO uptake capacity of >110 ?mol of CO/g of the catalyst.Type: GrantFiled: March 14, 2006Date of Patent: January 5, 2010Assignee: BASF SEInventors: Till Gerlach, Frank Haese, Anton Meier, Johann-Peter Melder, Heinz Rütter
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Publication number: 20090234163Abstract: Processes comprising: (a) providing a first reactant comprising a bioethanol; and (b) reacting the first reactant with a second reactant comprising a component selected from the group consisting of ammonia, primary amines, secondary amines and mixtures thereof, in the presence of hydrogen and a catalytically effective amount of a heterogeneous hydrogenation/dehydrogenation catalyst to form an ethylamine; wherein the catalyst has been activated at a temperature of 100 to 500° C. for at least 25 minutes; wherein prior to activation the catalyst comprises: (i) 20 to 65% by weight of a support material comprising one or both of zirconium dioxide (ZrO2) and aluminum oxide (Al2O3), (ii) 1 to 30% by weight of oxygen-comprising compounds of copper, calculated as CuO, and (iii) 21 to 70% by weight of oxygen-comprising compounds of nickel, calculated as NiO; and wherein after activation the catalyst has a CO uptake capacity of >110 ?mol of CO/g of the catalyst.Type: ApplicationFiled: March 14, 2006Publication date: September 17, 2009Applicant: BASF AKTIENGESELLSCHAFTInventors: Till Gerlach, Frank Haese, Anton Meier, Johann-Peter Melder, Heinz Rütter
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Publication number: 20080207949Abstract: A process for preparing N,N-dimethylacetamide (DMAC) by continuously reacting methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a basic catalyst, wherein MeOAc is used in the form of a methanolic solution which is obtained as a by-product in the preparation of polyTHF by transesterifying polyTHF diacetate with methanol.Type: ApplicationFiled: December 3, 2005Publication date: August 28, 2008Applicant: Basf AktiengesellschaftInventors: Horst Grafmans, Steffen Maas, Alexander Weck, Heinz Rutter, Michael Schulz, Karl-Heinz Ross
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Publication number: 20080194879Abstract: Processes comprising: (a) providing an ethanol reactant and ammonia; and (b) reacting the ethanol reactant with the ammonia in the presence of hydrogen and a heterogeneous hydrogenation/dehydrogenation catalyst to form a product comprising one or more ethylamines selected from the group consisting of monoethylamines, diethylamines, triethylamines and mixtures thereof; wherein the ethanol reactant comprises ethanol denatured by the addition of a denaturant comprising an ethylamine selected from the group consisting of diethylamine, triethylamine and mixtures thereof; and methods of denaturing ethanols.Type: ApplicationFiled: September 6, 2006Publication date: August 14, 2008Applicant: BASE SEInventors: Bram Willem Hoffer, Elmar Benne, Heinz Rutter, Wolfgang Schlindwein, Johann-Peter Melder
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Patent number: 7405327Abstract: Process for the continuous preparation of an amine by reaction of a primary or secondary alcohol, aldehyde and/or ketone with hydrogen and a nitrogen compound selected from the group consisting of ammonia, primary and secondary amines at a temperature in the range from 60 to 300° C.Type: GrantFiled: May 4, 2005Date of Patent: July 29, 2008Assignee: BASF AktiengesellschaftInventors: Frank Haese, Arnd Bottcher, Bernd Stein, Wolfgang Reif, Johann-Peter Melder, Karl-Heinz Roβ, Heinz Rutter, Shelue Liang, Stefan Rittinger
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Publication number: 20080103336Abstract: A process for preparing N,N-dimethylacetamide (DMAC) by continuously reacting methyl acetate (MeOAc) with dimethylamine (DMA) in the presence of a basic catalyst, wherein MeOAc is used in the form of a methanolic solution and in the range from 0.0002 to 0.09 mol of catalyst per mole of MeOAc, and performing the reaction at a temperature in the range from 90 to 140° C. and at an absolute pressure in the range from 10 to 30 bar.Type: ApplicationFiled: December 3, 2005Publication date: May 1, 2008Applicant: BASF AktiengesellschaftInventors: Horst Grafmans, Steffen Maas, Alexander Weck, Heinz Rutter, Michael Schulz, Karl-Heinz Ross
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Publication number: 20070232833Abstract: Process for the continuous preparation of an amine by reaction of a primary or secondary alcohol, aldehyde and/or ketone with hydrogen and a nitrogen compound selected from the group consisting of ammonia, primary and secondary amines at a temperature in the range from 60 to 300° C in the presence of a copper-containing catalyst, wherein the catalytically active composition of the catalyst prior to reduction with hydrogen comprises from 20 to 85% by weight of aluminum oxide (Al2O3), zirconium dioxide (ZrO2), titanium dioxide (TiO2) and/or silicon dioxide (SiO2), from 1 to 70% by weight of oxygen-containing compounds of copper, calculated as CuO, from 0 to 50% by weight of oxygen-containing compounds of magnesium, calculated as MgO, oxygen-containing compounds of chromium, calculated as Cr2O3, oxygen-containing compounds of zinc, calculated as ZnO, oxygen-containing compounds of barium, calculated as BaO, and/or oxygen-containing compounds of calcium, calculated as CaO, and less than 30% by weight of oxygen-Type: ApplicationFiled: May 4, 2005Publication date: October 4, 2007Applicant: BASF AktiengesellschaftInventors: Frank Haese, Arnd Bottcher, Bernd Stein, Wolfgang Reif, Johann-Peter Melder, Karl-Heinz Ross, Heinz Rutter, Shelue Liang, Stefan Rittinger
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Patent number: 6986833Abstract: An amine-containing mixture containing one or more amines, water, low-boilers and optionally high-boilers is fractionated by a process having the steps (iii) and (iv) and optionally the steps (i), (ii) and (v): (i) a (first) low-boiler fraction is separated off from the amine-containing mixture by distillation, (ii) a (first) high-boiler fraction is separated off from the amine-containing mixture by distillation, (iii) the amine-containing mixture is extracted with sodium hydroxide solution, producing an aqueous, sodium-hydroxide-containing first phase and an aqueous-organic, amine-, (further) low-boiler- and possibly (further) high-boiler-containing second phase, (iv) the aqueous-organic second phase, is distilled, producing essentially anhydrous amine as bottom-phase take off or sidestream takeoff in the stripping part of the distillation column, an amine/water azeotrop as sidestream takeoff in the enrichment part of the column and a (further) low-boiler fraction as overhead takeoff, and recycling the aminType: GrantFiled: October 17, 2002Date of Patent: January 17, 2006Assignee: BASF AktiengesellschaftInventors: Andreas Wölfert, Heinz Rütter, Stefan Rittinger, Mark Wehinger, Aurelie Alemany, Willi Schmidt
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Patent number: 6913674Abstract: A mixture containing one or more amines, water, low-boilers and high-boilers, is fractioned in a process wherein (i) low-boilers are separated from the mixture by distillation, (ii) high-boilers are separated from the mixture by distillation, (iii) the mixture is extracted with a sodium hydroxide solution to form an aqueous, sodium-hydroxide-containing first phase and an aqueous-organic, amine-containing second phase, and (iv) the aqueous-organic second phase is distilled to form an amine/water azeotrop and an essentially anhydrous amine, and the amine/water azeotrop is recycled to the extraction step (iii).Type: GrantFiled: July 12, 2004Date of Patent: July 5, 2005Assignee: BASF AktiengesellschaftInventors: Andreas Wölfert, Heinz Rütter, Stefan Rittinger, Mark Wehinger, Aurelie Alemany, Willi Schmidt
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Patent number: 6821396Abstract: A mixture containing mixture one or more amines, water, low-boilers and high-boilers, is fractioned in a process wherein (i) low-boilers are separated from the mixture by distillation, (ii) high-boilers are separated from the mixture by distillation, (iii) the mixture is extracted with a sodium hydroxide solution to form an aqueous, sodium-hydroxide-containing first phase and an aqueous-organic, amine-containing second phase, and (iv) the aqueous-organic second phase is distilled to form an amine/water azeotrope and an essentially anhydrous amine, and the amine/water azeotrope is recycled to the extraction step (iii).Type: GrantFiled: October 17, 2002Date of Patent: November 23, 2004Assignee: BASF AktiengesellscahftInventors: Andreas Wolfert, Heinz Rütter, Stefan Rittinger, Mark Wehinger, Aurelie Alemany, Willi Schmidt
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Patent number: 6583286Abstract: A process for hydrogenating an unsaturated heterocyclic compound or a mixture of two or more thereof by contacting the unsaturated heterocyclic compounder the mixture of two or more thereof with a hydrogen-containing gas in the presence of a catalyst comprising as active metal at least one metal from transition group VIII of the Periodic Table, applied to a support, wherein the support has macropores.Type: GrantFiled: January 17, 2001Date of Patent: June 24, 2003Assignee: BASF AktiengesellschaftInventors: Arnd Böttcher, Melanie Brunner, Jochem Henkelmann, Heinz Rütter, Boris Breitscheidel
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Publication number: 20030089591Abstract: A process for fractionating an amine-containing mixture which comprises one or more amines, water, low-boilers and optionally high-boilers, having the steps (i) to (v):Type: ApplicationFiled: October 17, 2002Publication date: May 15, 2003Inventors: Andreas Wolfert, Heinz Rutter, Stefan Rittinger, Mark Wehinger, Aurelie Alemany, Willi Schmidt
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Publication number: 20030089592Abstract: A process for fractionating an amine-containing mixture which comprises one or more amines, water, low-boilers and high-boilers, having the steps (i) to (iv):Type: ApplicationFiled: October 17, 2002Publication date: May 15, 2003Inventors: Andreas Wolfert, Heinz Rutter, Stefan Rittinger, Mark Wehinger, Aurelie Alemany, Willi Schmidt
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Patent number: 6554966Abstract: The invention relates to a process for preparing essentially formic acid-free N-alkyl-N′-methylalkyleneureas of the formula with R1=H or CH3, R2=CnH2n+1 with n=1-4 and x=0 or 1, from the corresponding alkyleneureas by reaction with monomeric or polymerized formaldehyde in the presence of formic acid. This entails feeding the mixture, obtained in the reaction, of N-alkyl-N′-methylalkyleneurea and formic acid to the upper region of a distillation column, distilling without further additions and removing essentially formic acid-free N-alkyl-N′-methylalkyleneurea in the lower region of the column.Type: GrantFiled: June 26, 2000Date of Patent: April 29, 2003Assignee: BASF AktiengesellschaftInventors: Andreas Kramer, Johann-Peter Melder, Heinz Rütter, Günter Riewe, Wolfgang Siegel, Hans-Jürgen Weyer
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Patent number: 6521767Abstract: In a process for the suspension hydrogenation of an anthraquinone compound or a mixture of two or more thereof in a reactor in which there are present the working solution in which at least one catalyst is suspended and, in addition, a hydrogen-containing gas phase, the working solution and the gas phase are, in the reactor, passed at least partly through a fitting having openings or channels whose hydraulic diameter is from 0.5 to 20 mm, preferably from 1 to 10 mm, particularly preferably from 1 to 3 mm.Type: GrantFiled: August 28, 2000Date of Patent: February 18, 2003Assignee: BASF AktiengesellschaftInventors: Arnd Böttcher, Jochem Henkelmann, Franz Josef Bröcker, Gerd Kaibel, Heinz Rütter
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Patent number: 6455711Abstract: A process for preparing polytetrahydrofuran, polytetrahydrofuran copolymers or diesters or monoesters of these polymers comprises polymerizing tetrahydrofuran in the presence of at least one telogen and/or comonomer over a heterogeneous catalyst comprising hectorite.Type: GrantFiled: February 29, 2000Date of Patent: September 24, 2002Assignee: BASF AktiengesellschaftInventors: Karsten Eller, Michael Hesse, Rainer Becker, Arthur Höhn, Heinz Rütter
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Patent number: 6362312Abstract: In a process for preparing polytetrahydrofuran, polytetrahydrofuran copolymers or diesters or monoesters thereof comprises polymerizing tetrahydrofuran in the presence of at least one telogen and/or comonomer over an acid-activated calcium montmorillonite as catalyst, the calcium montmorillonite has a BET surface area of at least 300 m2/g, an acidity of at least 0.02 mmol/g at pKa<−3 and a pore volume of at least 0.40 cm3/g for pore sizes in the range from 30 to 200 Å.Type: GrantFiled: April 10, 2000Date of Patent: March 26, 2002Assignee: BASF AktiengesellschaftInventors: Karsten Eller, Heinz Rütter, Michael Hesse, Rainer Becker