Patents by Inventor Jens LANGANKE
Jens LANGANKE 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: 11788107Abstract: The invention relates to a method for producing aniline or an aniline derivative, in which a solution of aminobenzoic acid in aniline with a mass fraction of aniline in the solution, in relation to the total mass of aminobenzoic acid and aniline, in the region of 20% to 85%, is subject to a thermal decarboxylation at a temperature in the region of 165° C. to 500° C. without the presence of a non-system catalyst, such that the aminobenzoic acid is converted into aniline. The obtained aniline can be converted into derivatives, such as di- and polyamines of the diphenylmethane series.Type: GrantFiled: July 24, 2019Date of Patent: October 17, 2023Assignee: Covestro Intellectual Property Gmbh & Co. KgInventors: Jens Langanke, Franz Beggel, Gernot Jaeger, Wolf Kloeckner, Volker Michele, Thomas Voessing
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Publication number: 20220403087Abstract: A method for producing a polyoxymethylene polyoxyalkylene copolymer, comprising reacting a polymer formaldehyde compound with an alkylene oxide in the presence of a double metal cyanide (DMC) catalyst, wherein the polymer formaldehyde compound comprises at least one terminal hydroxyl group and wherein the method comprises the steps of placing a suspending agent in a reactor and subsequently incrementally or continuously metering in the polymer formaldehyde compound into the reactor during the reaction is provided.Type: ApplicationFiled: December 14, 2020Publication date: December 22, 2022Inventors: Jens Langanke, Aurel Wolf, Christoph Guertler
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Publication number: 20220204465Abstract: A process for the carbonylation of epoxides in the presence of catalyst systems, wherein the carbonylation takes place in the presence of carbon monoxide, and wherein the catalyst system contains a molybdenum-based compound. Carbonylation products as well as carbonylation derivatives and to the use of the claimed catalyst systems for the carbonylation of epoxides are also provided.Type: ApplicationFiled: June 5, 2020Publication date: June 30, 2022Inventors: Jens Langanke, Matthias Leven, Christoph Guertler, Suresh Raju
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Publication number: 20220185833Abstract: The invention relates to a process for the carbonylation of epoxides in the presence of catalyst systems, in which the carbonylation is carried out in the presence of carbon monoxide, and wherein the catalyst system comprises a vanadium-based, chromium-based, manganese-based and/or tungsten-based compound, preferably a tungsten-based compound. The invention further relates to carbonylation products and carbonylation conversion products and to the use of catalyst systems according to the invention for carbonylation of epoxides.Type: ApplicationFiled: December 2, 2021Publication date: June 16, 2022Inventors: Jens Langanke, Christoph Guertler, Matthias Leven, Daniel Schikowski, Walter Leitner, Suresh Raju
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Patent number: 11319270Abstract: The invention relates to a process for preparing a specific hydroxy compound by means of decarboxylation of a specific carboxylic acid compound or a salt of said carboxylic acid compound, to a method for preparing a diaryl carbonate, a bisphenol or a polycarbonate, a diaryl carbonate or bisphenol, a polycarbonate, and to a method for adjusting the isotope ratio of C14 to C12 in a polymer. A specific solvent is used during decarboxylation.Type: GrantFiled: December 2, 2019Date of Patent: May 3, 2022Assignee: COVESTRO INTELLECTUAL PROPERTY GMBH & CO. KGInventors: Natalie Bittner, Jens Langanke, Niklas Meine, Jan Heijl
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Patent number: 11312812Abstract: The present invention describes a process for producing an elastomer, preferably a polyurethane-containing elastomer, by reacting a polyol component (A) comprising at least one polyether carbonate polyol (A-1) containing carbon-carbon double bonds with a component (B) which is reactive with OH groups and contains at least one compound reactive toward OH groups, preferably an isocyanate component (B-1) containing NCO groups, in the presence of a free-radical initiator (C), preferably at least one peroxide (C-1), and optionally a catalyst (D), where the molar ratio of the OH-reactive groups of component (B) reactive with groups, to the OH groups of the polyol component (A) containing carbon-carbon double bonds, is greater than 1.0. It further relates to elastomers obtainable by such a process, preferably polyurethane elastomers, the use thereof, and two-component systems for production of elastomers, preferably polyurethane elastomers.Type: GrantFiled: October 10, 2017Date of Patent: April 26, 2022Assignee: Covestro Deutschland AGInventors: Jochen Norwig, Volker Marker, Jens Langanke, Aurel Wolf, Christoph Gürtler, Philipp Nicholas Wagner, Florian Kessler
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Publication number: 20220017441Abstract: The invention relates to a process for preparing a specific hydroxy compound by means of decarboxylation of a specific carboxylic acid compound or a salt of said carboxylic acid compound, to a method for preparing a diaryl carbonate, a bisphenol or a polycarbonate, a diaryl carbonate or bisphenol, a polycarbonate, and to a method for adjusting the isotope ratio of C14 to C12 in a polymer. A specific solvent is used during decarboxylation.Type: ApplicationFiled: December 2, 2019Publication date: January 20, 2022Inventors: Natalie Bittner, Jens Langanke, Niklas Meine, Jan Heijl
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Publication number: 20220017442Abstract: The invention relates to a method for producing a specific hydroxy compound by decarboxylating a specific carboxylic acid compound or a salt of said carboxylic acid compound in the presence of a Bronsted base. The invention also relates to a method for producing a diaryl carbonate or a bisphenol, to a method for producing a polycarbonate and to a use of a Bronsted base during the reaction of the decarboxylation of a specific carboxylic acid compound or a salt of said carboxylic acid compound.Type: ApplicationFiled: December 2, 2019Publication date: January 20, 2022Inventors: Jens Langanke, Erik Sluyts, Jan Heijl, Niklas Meine
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Publication number: 20210395430Abstract: The invention relates to a process for preparing prepolymers that comprise a polyoxymethylene block. The invention also relates to prepolymers that can be obtained by said process and to mixtures of the prepolymers with OH-reactive compounds, preferably polyisocyanates. The invention further relates to a chemical-technical process for preparing a chemical product of defined composition.Type: ApplicationFiled: November 14, 2019Publication date: December 23, 2021Inventors: Jens Langanke, Christoph Guertler, Ghazi Ghattas, Philipp von Tiedemann, Christoph Rosorius, Walter Leitner
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Publication number: 20210238638Abstract: The invention relates to a method for producing aniline or an aniline derivative, in which a solution of aminobenzoic acid in aniline with a mass fraction of aniline in the solution, in relation to the total mass of aminobenzoic acid and aniline, in the region of 20% to 85%, is subject to a thermal decarboxylation at a temperature in the region of 165° C. to 500° C. without the presence of a non-system catalyst, such that the aminobenzoic acid is converted into aniline. The obtained aniline can be converted into derivatives, such as di- and polyamines of the diphenylmethane series.Type: ApplicationFiled: July 24, 2019Publication date: August 5, 2021Inventors: Jens Langanke, Franz Beggel, Gernot Jaeger, Wolf Kloeckner, Volker Michele, Thomas Voessing
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Patent number: 10858310Abstract: The invention relates to a method for producing an isocyanate, wherein a carbamate or thiolcarbomate is converted, in the presence of a catalyst, with separation of an alcohol or thioalcohol, at a temperature of at least 150° C., to the corresponding isocyanate, wherein a compound of the general formula (X)(Y)(Z—H) is used as a catalyst, in particular characterized in that the compound has both a proton donor function and a proton acceptor function. In the catalysts according to the invention, a separable proton is bound to a heteroatom, which is more electronegative than carbon. Said heteroatom is either identical to Z or a component thereof. In the catalysts according to the invention, there is additionally a proton acceptor function which is either identical to X or a component thereof. According to the invention, the proton donator and proton acceptor function are connected to each other by the bridge Y.Type: GrantFiled: August 31, 2018Date of Patent: December 8, 2020Assignee: Coverstro Deutschland AGInventors: Daniela Cozzula, Andreas Ernst, Matthias Leven, Walter Leitner, Thomas Ernst Mueller, Christoph Guertler, Stefan Wershofen, Gernot Jaeger, Franz Beggel, Jens Langanke
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Publication number: 20200361856Abstract: The invention relates to a method for producing an isocyanate, wherein a carbamate or thiolcarbomate is converted, in the presence of a catalyst, with separation of an alcohol or thioalcohol, at a temperature of at least 150° C., to the corresponding isocyanate, wherein a compound of the general formula (X)(Y)(Z—H) is used as a catalyst, in particular characterized in that the compound has both a proton donor function and a proton acceptor function. In the catalysts according to the invention, a separable proton is bound to a heteroatom, which is more electronegative than carbon. Said heteroatom is either identical to Z or a component thereof. In the catalysts according to the invention, there is additionally a proton acceptor function which is either identical to X or a component thereof. According to the invention, the proton donator and proton acceptor function are connected to each other by the bridge Y.Type: ApplicationFiled: August 31, 2018Publication date: November 19, 2020Inventors: Daniela Cozzula, Andreas Ernst, Matthias Leven, Walter Leitner, Thomas Ernst Mueller, Christoph Guertler, Stefan Wershofen, Gernot Jaeger, Franz Beggel, Jens Langanke
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Patent number: 10759902Abstract: The invention relates to a process for producing polyoxymethylene block copolymers, comprising the step of activating the DMC catalyst in the presence of an OH-terminated polymeric formaldehyde starter compound by means of a defined amount of alkylene oxide, optionally followed by polymerization with alkylene oxides, if necessary in the presence of other comonomers. The invention further relates to polyoxymethylene block copolymers that can be obtained by means of such a process and to the use of these for producing polyurethane polymers.Type: GrantFiled: September 4, 2018Date of Patent: September 1, 2020Assignee: Covestro Deutschland AGInventors: Ilja Peckermann, Aurel Wolf, Jens Langanke, Christoph Gürtler, Jörg Hofmann
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Publication number: 20200190261Abstract: The invention relates to a method for adding a compound (A) to an H-functional starting compound (BH) in the presence of a catalyst, wherein the at least one compound (A) is selected from at least one group consisting of alkylene oxide (A-1), lactone (A-2), lactide (A-3), cyclic acetal (A-4), lactam (A-5), cyclic anhydride (A-6) and oxygen-containing heterocyclic compound (A-7) different from (A-1), (A-2), (A-3), (A-4) and (A-6), wherein the catalyst comprises an organic, n-protic Brønsted acid (C), wherein n?2 and is an element of the natural numbers and the degree of protolysis D is 0<D<n, with n as the maximum number of transferable protons and D as the calculated proton fraction of the organic, n-protic Brønsted acid (C). The invention further relates to an n-protic Brønsted acid (C) having a degree of protolysis D of 0<D<n, wherein n is the maximum number of transferable protons, with n=2, 3 or 4, and D is the calculated proton fraction of the organic, n-protic Brønsted acid (C).Type: ApplicationFiled: August 9, 2017Publication date: June 18, 2020Inventors: Christoph GÜRTLER, Thomas Ernst MÜLLER, Jörg HOFMANN, Jens LANGANKE, Matthias LEVEN, Walter LEITNER
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Use of alcohols which contain at least two urethane groups for producing polyether carbonate polyols
Patent number: 10519276Abstract: The present invention relates to a method for producing polyether carbonate polyols by attaching alkyloxides and carbon dioxide to H-functional starter compounds, characterized in that at least one alcohol containing at least two urethane groups is used as the H-functional starter compound.Type: GrantFiled: May 24, 2016Date of Patent: December 31, 2019Assignee: Covestro Deutschland AGInventors: Urs Rauwald, Jörg Hofmann, Bert Klesczewski, Hartmut Nefzger, Aurel Wolf, Jens Langanke -
Publication number: 20190256640Abstract: The present invention describes a process for producing an elastomer, preferably a polyurethane-containing elastomer, by reacting a polyol component (A) comprising at least one polyether carbonate polyol (A-1) containing carbon-carbon double bonds with a component (B) which is reactive with OH groups and contains at least one compound reactive toward OH groups, preferably an isocyanate component (B-1) containing NCO groups, in the presence of a free-radical initiator (C), preferably at least one peroxide (C-1), and optionally a catalyst (D), where the molar ratio of the OH-reactive groups of component (B) reactive with groups, to the OH groups of the polyol component (A) containing carbon-carbon double bonds, is greater than 1.0. It further relates to elastomers obtainable by such a process, preferably polyurethane elastomers, the use thereof, and two-component systems for production of elastomers, preferably polyurethane elastomers.Type: ApplicationFiled: October 10, 2017Publication date: August 22, 2019Inventors: Jochen NORWIG, Volker MARKER, Jens LANGANKE, Aurel Wolf, Christoph GÜRTLER, Philipp Nicholas WAGNER, Florian KESSLER
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Publication number: 20180371159Abstract: The invention relates to a process for producing polyoxymethylene block copolymers, comprising the step of activating the DMC catalyst in the presence of an OH-terminated polymeric formaldehyde starter compound by means of a defined amount of alkylene oxide, optionally followed by polymerization with alkylene oxides, if necessary in the presence of other comonomers. The invention further relates to polyoxymethylene block copolymers that can be obtained by means of such a process and to the use of these for producing polyurethane polymers.Type: ApplicationFiled: September 4, 2018Publication date: December 27, 2018Inventors: Ilja Peckermann, Aurel Wolf, Jens Langanke, Christoph Gürtler, Jörg Hofmann
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Patent number: 10125217Abstract: The invention relates to a process for producing polyether carbonate polyols through an addition reaction of alkylene oxides and carbon dioxide onto one or more H-functional starter substances in the presence of a double metal cyanide catalyst or in the presence of a metal complex catalyst based on the metals zinc and/or cobalt, characterized in that one or more H-functional starter substances containing at least 1000 ppm of component (K) is/are continuously metered into the reactor during the reaction, where component (K) is selected from at least one compound containing a phosphorus-oxygen bond and a phosphorus compound that can form one or more P—O bonds through reaction with OH-functional compounds.Type: GrantFiled: October 20, 2014Date of Patent: November 13, 2018Assignee: COVESTRO DEUTSCHLAND AGInventors: Jörg Hofmann, Hans-Georg Pirkl, Kai Laemmerhold, Hartmut Nefzger, Matthias Wohak, Stefanie Braun, Christoph Gürtler, Aurel Wolf, Jens Langanke
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USE OF ALCOHOLS WHICH CONTAIN AT LEAST TWO URETHANE GROUPS FOR PRODUCING POLYETHER CARBONATE POLYOLS
Publication number: 20180291149Abstract: The present invention relates to a method for producing polyether carbonate polyols by attaching alkyloxides and carbon dioxide to H-functional starter compounds, characterized in that at least one alcohol containing at least two urethane groups is used as the H-functional starter compound.Type: ApplicationFiled: May 24, 2016Publication date: October 11, 2018Inventors: Urs Rauwald, Jörg Hofmann, Bert Klesczewski, Hartmut Nefzger, Aurel Wolf, Jens Langanke -
Patent number: 10093772Abstract: The invention relates to a process for producing polyoxymethylene block copolymers, comprising the step of activating the DMC catalyst in the presence of an OH-terminated polymeric formaldehyde starter compound by means of a defined amount of alkylene oxide, optionally followed by polymerization with alkylene oxides, if necessary in the presence of other comonomers. The invention further relates to polyoxymethylene block copolymers that can be obtained by means of such a process and to the use of these for producing polyurethane polymers.Type: GrantFiled: April 1, 2015Date of Patent: October 9, 2018Assignee: COVESTRO DEUTSCHLAND AGInventors: Ilja Peckermann, Aurel Wolf, Jens Langanke, Christoph Gürtler, Jörg Hofmann