Patents by Inventor Walter Leitner
Walter Leitner 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: 20240076439Abstract: The present invention relates to composition at least including (A) at least one epoxy-group terminated polyoxazolidinone, derived from at least one polyisocyanate compound and at least one aliphatic polyepoxide compound, (B) at least one compound having at least one group that is reactive towards terminal epoxy-groups, and (C) at least one solvent. The molar ratio of the epoxy groups of the polyepoxide compound to the isocyanate groups of the polyisocyanate compound is 50:1 to 2.4:1. The at least one epoxy-group terminated polyoxazolidinone is present in an amount of 50 to 95% by weight, in respect of the solid content of the composition. The sum of all components in respect of the solid content of the composition adds up to 100% by weight and where the solid content of the composition is at least 35% by weight.Type: ApplicationFiled: December 6, 2021Publication date: March 7, 2024Inventors: Irene Cristina Latorre Martinez, Yvonne Reimann, Jan Weikard, Florian Golling, Laura Woods, Christoph Guertler, Aurel Wolf, Kai Laemmerhold, Stefan Westhues, Sohajl Movahhed, Walter Leitner, Charlotte Over, Chicco Manzuna Sapu, Mathias Glassner
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Publication number: 20220348708Abstract: The invention relates to a process of preparing allophanate- and/or thioallophanate group-containing compounds comprising the following steps: reacting A) at least one component having at least one uretdione group with B) at least one component having at least one hydroxyl and/or thiol group, in the presence C) of at least one catalyst, containing a structural element of the general formulae (I) and/or (II), wherein R1, R2, R3, R4, R5 and R6 independently of each other represent the same or different radicals meaning saturated or unsaturated, linear or branched, aliphatic, cycloaliphatic, araliphatic or aromatic organic radicals with 1 to 18 carbon atoms that are substituted or unsubstituted and/or have heteroatoms in the chain, the radicals being capable of forming, even when combined with each other and optionally together with an additional heteroatom, rings with 3 to 8 carbon atoms that can optionally be further substituted, wherein R3, R4, R5 and R6 independently of each other also can represent hydrogenType: ApplicationFiled: July 6, 2020Publication date: November 3, 2022Inventors: Hans-Josef Laas, Florian Stempfle, Kai Laemmerhold, Saskia Beuck, Raul Pires, Christoph Guertler, Nusret Yuva, Ralph-Georg Born, Daniel Thiel, Tuba Fatma Bayram, Sureshbabu Guduguntla, Walter Leitner
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Patent number: 11427671Abstract: A process for producing thermoplastic polyoxazolidinone, comprising the following steps: (i) Reaction of a diisocyanate compound (A) with a bisepoxide compound (B) in the presence of a catalyst (C) and a compound (D) in a solvent (E) forming an intermediate compound (F) and (ii) Reaction of a compound (G) with the intermediate (F) formed in step (i), wherein the bisepoxide compound (B) comprises isosorbide diglycidylether, wherein compound (D) is one or more compounds selected from the group consisting of monofunctional isocyanate and monofunctional epoxide, and wherein compound (G) is an alkylene oxide. The invention is also related to the resulting thermoplastic polyoxazolidinone.Type: GrantFiled: October 25, 2019Date of Patent: August 30, 2022Assignee: Covestro Intellectual Property GmbH & Co. KGInventors: Carsten Koopmans, Kai Laemmerhold, Christoph Guertler, Elena Frick-Delaittre, Aurel Wolf, Joachim Simon, Min Wang, Daniel Thiel, Walter Leitner
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Publication number: 20220251280Abstract: The invention relates to a process of preparing allophanate- and/or thioallophanate group-containing compounds comprising the following steps: reacting A) at least one component having at least one uretdione group with B) at least one component having at least one hydroxyl and/or thiol group, in the presence C) of at least one catalyst, containing a structural element of the general formulae (I) and/or (II), wherein R1, R2, R3, R4, R5 and R6 independently of each other represent the same or different radicals meaning saturated or unsaturated, linear or branched, aliphatic, cycloaliphatic, araliphatic or aromatic organic radicals with 1 to 18 carbon atoms that are substituted or unsubstituted and/or have heteroatoms in the chain, the radicals being capable of forming, even when combined with each other and optionally together with an additional heteroatom, rings with 3 to 8 carbon atoms that can optionally be further substituted, wherein R3, R4, R5 and R6 independently of each other also can represent hydrogenType: ApplicationFiled: July 6, 2020Publication date: August 11, 2022Inventors: Hans-Josef Laas, Florian Stempfle, Kai Laemmerhold, Saskia Beuck, Raul Pires, Christoph Guertler, Nusret Yuva, Ralph-Georg Born, Daniel Thiel, Sureshbabu Guduguntla, Walter Leitner
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Publication number: 20220234999Abstract: A process for preparing urea comprises preparing formamide based on carbon dioxide, hydrogen, and ammonia, forming methyl formate or ammonium formate as an intermediate in a catalytic reaction, and preparing urea by reacting the formamide and possibly ammonia in the presence of a catalyst. The source of carbon dioxide is a liquid laden with chemically and/or physically bound carbon dioxide and selected from a methanol phase or an aqueous ammonia solution obtained by gas scrubbing of a syngas for removing carbon dioxide using a scrubbing fluid. The scrubbing fluid can be a methanol phase, or carbon dioxide is desorbed from the scrubbing fluid and absorbed into a methanol phase to give a carbon dioxide-laden methanol phase that is then reacted as carbon dioxide-containing stream with a hydrogen-containing stream in the presence of a catalyst to form methyl formate. The methyl formate is reacted with an ammonia-containing stream to form formamide.Type: ApplicationFiled: April 27, 2020Publication date: July 28, 2022Applicants: thyssenkrupp Industrial Solutions AG, thyssenkrupp AGInventors: Yevgeny MAKHYNYA, Tarek EL HAWARY, Christoph GLOTZBACH, Nils TENHUMBERG, Walter LEITNER, Jürgen KLANKERMAYER, Hannah SCHUMACHER
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Publication number: 20220235176Abstract: A method for producing polyether ester carbonate polyols by catalytically adding alkylene oxide and carbon dioxide to an H-functional initiator substance in the presence of a double metal cyanide catalyst. The method comprises the following steps: (?) feeding a partial amount of H-functional initiator substance and/or a suspension agent which does not have any H-functional groups into a reactor, optionally together with DMC catalyst, (?) adding alkylene oxide and optionally carbon dioxide to the reactor during the reaction. The method is characterized in that in step (?) lactide is added to the reactor.Type: ApplicationFiled: June 26, 2020Publication date: July 28, 2022Inventors: Thomas Ernst Mueller, Christoph Guertler, Muhammad Afzal Subhani, Walter Leitner
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Publication number: 20220219156Abstract: A ruthenium-phosphine complex can be used as a catalyst in a method for the catalytic synthesis of urea. The method may comprise more particularly a reaction of formamide or of formamide with ammonia in the presence of the catalyst to form urea and hydrogen. Through the use of the ruthenium-phosphine complex as the catalyst, catalytic preparation of urea from formamide or from formamide with ammonia is provided for the first time. This allows for synthesis under mild conditions and virtually no formation of byproducts. Further, using an acid as a cocatalyst in the catalytic synthesis or the reaction can lead to an improvement in urea yield.Type: ApplicationFiled: April 27, 2020Publication date: July 14, 2022Applicants: thyssenkrupp Industrial Solutions AG, thyssenkrupp AGInventors: Christoph GLOTZBACH, Nils TENHUMBERG, Tarek EL HAWARY, Yevgeny MAKHYNYA, Walter LEITNER, Jürgen KLANKERMAYER, Hannah SCHUMACHER
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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: 11326018Abstract: A method for the production of polyoxazolidinone compounds, comprising the step of reacting an isocyanate compound (A) with an epoxide compound (B) in the presence of a catalyst (C), wherein the isocyanate compound (A) comprises a isocyanate compound (A1) wherein the a isocyanate compound (A1) comprising at least two isocyanate groups (I1?2), preferred two isocyanate groups (I1=2), wherein the epoxide compound (B) comprises a epoxide compound (B1) and an epoxide compound (B2), wherein the epoxide compound (B2) is different from the epoxide compound (B1) wherein the epoxide compound (B1) comprising at least two terminal epoxide groups (F1?2), preferred two terminal epoxide groups (F1=2), linked together by a linking group (L1) and the epoxide compound (B2) comprising at least two terminal epoxide groups (F2?2)), preferred two terminal epoxide groups (F2=2), linked together by a linking group (L2), wherein the linking group (L2) comprises acyclic and covalent bonds to each other free of conjugated multiple bondType: GrantFiled: August 16, 2017Date of Patent: May 10, 2022Assignee: Covestro Deutschland AGInventors: Anna Weber, Claudine Rangheard, Michael Kessler, Walter Leitner, Christoph Gürtler, Carsten Koopmans, Thomas Ernst Müller
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Patent number: 11319398Abstract: Method for the production of polyoxazolidinone compounds, comprising the reaction of at least one biscarbamate compound (A) with at least one bisepoxide compound (B) in the presence of at least one base (D), at least one Lewis acid catalyst (E), and optionally at least one compound (C), wherein the compound (C) comprising a mono-carbamate group, a mono-isocyanate group and/or a mono-epoxide group, and wherein the base (D) having a pKb-value of ?9. The invention is also related to the resulting polyoxazolidinone compounds.Type: GrantFiled: January 30, 2018Date of Patent: May 3, 2022Assignee: Covestro Deutschland AGInventors: Thomas Ernst Müller, Christoph Gürtler, Carsten Koopmans, Volker Marker, Claudine Rangheard, Walter Leitner
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Publication number: 20220041786Abstract: A process for producing thermoplastic polyoxazolidinone, comprising the following steps: (i) Reaction of a diisocyanate compound (A) with a bisepoxide compound (B) in the presence of a catalyst (C) and a compound (D) in a solvent (E) forming an intermediate compound (F) and (ii) Reaction of a compound (G) with the intermediate (F) formed in step (i), wherein the bisepoxide compound (B) comprises isosorbide diglycidylether, wherein compound (D) is one or more compounds selected from the group consisting of monofunctional isocyanate and monofunctional epoxide, and wherein compound (G) is an alkylene oxide. The invention is also related to the resulting thermoplastic polyoxazolidinone.Type: ApplicationFiled: October 25, 2019Publication date: February 10, 2022Inventors: Carsten Koopmans, Kai Laemmerhold, Christoph Guertler, Elena Frick-Delaittre, Aurel Wolf, Joachim Simon, Min Wang, Daniel Thiel, Walter Leitner
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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: 20210380748Abstract: A process for producing thermoplastic polyoxazolidinone comprising copolymerization of a diisocyanate compound (A) with a bisepoxide compound (B) in the presence of a catalyst (C) and a compound (D) in a solvent (E), wherein the bisepoxide compound (B) comprises isosorbide diglycidylether, wherein the catalyst (C) is selected from the group consisting of alkali halogenides and earth alkali halogenides, and transition metal halogenides, compound (D) is selected from the group consisting of monofunctional isocyanate, monofunctional epoxide, and wherein the process comprises step (?) of placing the solvent (E) and the catalyst (C) in a reactor to provide a mixture, and adding the diisocyanate compound (A), the bisepoxide compound (B) and the compound (D) in step (?) to the mixture resulting from the step (?). The invention is also related to the resulting thermoplastic polyoxazolidinone.Type: ApplicationFiled: October 25, 2019Publication date: December 9, 2021Inventors: Carsten Koopmans, Kai Laemmerhold, Christoph Guertler, Elena Frick-Delaittre, Aurel Wolf, Joachim Simon, Min Wang, Daniel Thiel, Walter Leitner
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Patent number: 11149145Abstract: This invention relates to novel macromers containing dithiocarbonate (or xanthate) groups, novel preformed stabilizers comprising macromers, and novel polymer polyols comprising the novel macromers and/or novel preformed stabilizers. This invention also relates to processes for the preparation of these materials. Other aspects of this invention include foams comprising the novel polymer polyols and a process for preparing foam comprising the novel polymer polyols.Type: GrantFiled: November 19, 2019Date of Patent: October 19, 2021Assignees: Covestro LLC, Covestro Deutschland AGInventors: Rick L. Adkins, Jack R. Reese, Thomas Ernst Müller, Christoph Gürtler, Urs Rauwald, Muhammad Afzal Subhani, Verena Jakoby, Burkhard Köhler, Walter Leitner
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Publication number: 20210292478Abstract: Provided herein is a process for preparing a heterocycle-functional polyoxyalkylene polyol, in which a polyoxyalkylene polyol having unsaturated groups is reacted with a heterocyclic compound. Also provided herein is a heterocycle-functional polyoxyalkylene polyol, a method of crosslinking a heterocycle-functional polyoxyalkylene polyol, a crosslinked, heterocycle-functional polyoxyalkylene polyol, and related processes.Type: ApplicationFiled: July 16, 2019Publication date: September 23, 2021Inventors: Daniela Cozzula, Burkhard Köhler, Muhammad Afzal Subhani, Piotr Putaj, Walter Leitner, Thomas Ernst Mueller, Christoph Guertler, Volker Marker
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Publication number: 20210284785Abstract: A method for the production of polyoxazolidinone compounds, comprising the step of reacting an isocyanate compound (A) with an epoxide compound (B) in the presence of a catalyst (C), wherein the isocyanate compound (A) comprises a isocyanate compound (A1) wherein the a isocyanate compound (A1) comprising at least two isocyanate groups (I1?2), preferred two isocyanate groups (I1=2), wherein the epoxide compound (B) comprises a epoxide compound (B1) and an epoxide compound (B2), wherein the epoxide compound (B2) is different from the epoxide compound (B1) wherein the epoxide compound (B1) comprising at least two terminal epoxide groups (F1?2), preferred two terminal epoxide groups (F1=2), linked together by a linking group (L1) and the epoxide compound (B2) comprising at least two terminal epoxide groups (F2?2)), preferred two terminal epoxide groups (F2=2), linked together by a linking group (L2), wherein the linking group (L2) comprises acyclic and covalent bonds to each other free of conjugated multiple bondType: ApplicationFiled: August 16, 2017Publication date: September 16, 2021Inventors: Anna WEBER, Claudine RANGHEARD, Michael KESSLER, Walter LEITNER, Christoph GÜRTLER, Carsten KOOPMANS, Thomas Ernst MÜLLER
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Patent number: 11111257Abstract: A compound by the name 1,1,1-tris(di(3,5-dimethoxyphenyl)phosphino-methyl)ethane. The compound can be represented by the structure of formula (I): The compound is useful as a ligand for ruthenium to form an organometallic complex. The complex is an active catalyst for the hydrogenolysis of amides to form amines and optionally alcohols.Type: GrantFiled: May 10, 2019Date of Patent: September 7, 2021Assignee: Eastman Chemical CompanyInventors: Jürgen Klankermayer, Stefan Westhues, Walter Leitner, Robert Thomas Hembre
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Patent number: 11098154Abstract: A process for preparing a phosphorus-functional polyethercarbonate polyol, comprising reacting a polyethercarbonate polyol having unsaturated groups with a phosphorus-functional compound of formula (Ia): wherein X=O or S; and wherein R1 and R2 are selected from the group consisting of C1-C22 alkyl, C1-C22 alkoxy, C1-C22 alkylsulfanyl, C6-C70 aryl, C6-C70 aryloxy, C6-C70 arylsulfanyl, C7-C70 aralkyl, C7-C70 aralkyloxy, C7-C70 aralkylsulfanyl, C7-C70 alkylaryl, C7-C70 alkylaryloxy, C7-C70 alkylarylsulfanyl, or wherein R1 and R2 are bridged to one another directly and/or via heteroatoms and are selected from the group consisting of C1-C22 alkylene, oxygen, sulfur, and NR5, wherein R5 is hydrogen, C1-C22 alkyl, C1-C22 acyl, C7-C22 aralkyl, or C6-C70 aryl radical. A process for preparing a phosphorus-functional polyurethane polymer is disclosed.Type: GrantFiled: April 3, 2018Date of Patent: August 24, 2021Assignee: COVESTRO DEUTSCHLAND AGInventors: Thomas Ernst Mueller, Christoph Guertler, Kai Laemmerhold, Muhammad Afzal Subhani, Burkhard Koehler, Walter Leitner
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Patent number: 11098153Abstract: The present invention relates to a method for producing a prepolymer that contains carbon-carbon multiple bonds, a polyol component A) being reacted with component B) that contains isocyanate groups and the polyol component comprising a polyether carbonate polyol that contains carbon-carbon multiple bonds.Type: GrantFiled: October 10, 2017Date of Patent: August 24, 2021Assignee: Covestro Deutschland AGInventors: Muhammad Afzal Subhani, Burkhard Koehler, Walter Leitner, Thomas Ernst Müller, Christoph Gürtler
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Patent number: 11091589Abstract: The present invention relates to a method for producing an organooxysilyl-crosslinked polymer by reacting a polyether carbonate polyol which contains carbon-carbon double bonds with a polysiloxane compound in the presence of a suitable catalyst. Suitable polysiloxane compounds have at least two Si—H bonds. This invention also relates to organooxysilyl-crosslinked polymers which are formed by this process.Type: GrantFiled: August 2, 2019Date of Patent: August 17, 2021Assignee: Covestro Intellectual Property GmbH & Co. KGInventors: Muhammad Afzal Subhani, Rene Boltersdorf, Walter Leitner, Thomas Ernst Mueller, Christoph Guertler, Carsten Koopmans