Patents by Inventor Guido Streukens
Guido Streukens 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: 20230399539Abstract: The present invention relates to a one-component system comprising a) at least one polyurethane prepolymer based on at least one di- and/or polyisocyanate and at least one di- and/or polyol, wherein at least one di- or polyol is a polyalkylene glycol having a number-average molecular weight of 900 to 2150 g/mol, wherein all unconverted isocyanate groups are blocked with at least one malonic ester and b) at least one di and/or polyamine; to a process for its production, to its use and to processes employing it for producing artificial leather and (artificial) leather coatings.Type: ApplicationFiled: June 8, 2023Publication date: December 14, 2023Inventors: Denis Pukrop, Christoph Nacke, Silvia Herda, Emmanouil Spyrou, Guido Streukens
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Patent number: 11326017Abstract: The present invention relates to a composition at least comprising A) an adduct of isocyanatosilanes with hydroxy-functional compounds and B) a tin-free catalyst, and also to a coating composition comprising at least the composition and to the use of the coating composition.Type: GrantFiled: May 13, 2019Date of Patent: May 10, 2022Assignee: Evonik Operations GmbHInventors: Tobias Unkelhäußer, Emmanouil Spyrou, Stephanie Hösl, Dennis Menne, Guido Streukens
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Publication number: 20200079894Abstract: The present invention relates to a composition at least comprising A) an adduct of isocyanatosilanes with hydroxy-functional compounds and B) a tin-free catalyst, and also to a coating composition comprising at least the composition and to the use of the coating composition.Type: ApplicationFiled: May 13, 2019Publication date: March 12, 2020Applicant: Evonik Degussa GmbHInventors: Tobias Unkelhäußer, Emmanouil Spyrou, Stephanie Hösl, Dennis Menne, Guido Streukens
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Patent number: 10343975Abstract: A process for fine purification of isophoronediamine (IPDA), including producing IPDA by aminating hydrogenation of isophorone nitrile in the presence of at least ammonia, hydrogen, a a hydrogenation catalyst and optionally further additions to obtain a crude IPDA, and subjecting the crude IPDA to a fine purification via two vacuum distillation columns, wherein in the first vacuum distillation column the removal of any remaining relatively low-boiling byproducts is effected and in the second vacuum distillation column the IPDA is obtained in pure form as tops and thus separated from the organic residues, and wherein the first vacuum distillation column has vacuum distillation column has a partial condenser fitted to it.Type: GrantFiled: March 30, 2017Date of Patent: July 9, 2019Assignee: Evonik Degussa GmbHInventors: Anne Rittsteiger, Alexander Martin Rüfer, Guido Streukens, Stephan Kohlstruk, Matthias Orschel, Matthias Mendorf, Jorn Walscharts, Axel Hengstermann, Anja Müller
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Patent number: 10125089Abstract: Process for preparing isophoronediamine, characterized in that A) isophoronenitrile is subjected directly in one stage to aminating hydrogenation to give isophoronediamine in the presence of ammonia, hydrogen, a hydrogenation catalyst and possibly further additions, and in the presence or absence of organic solvents; or B) isophoronenitrile is first converted fully or partly in at least two or more than two stages to isophoronenitrile imine, and this isophoronenitrile imine is subjected to aminating hydrogenation to give isophoronediamine as a pure substance or in a mixture with other components and/or isophoronenitrile, in the presence of at least ammonia, hydrogen and a catalyst.Type: GrantFiled: January 26, 2016Date of Patent: November 13, 2018Assignee: Evonik Degussa GmbHInventors: Stephan Kohlstruk, Anne Rittsteiger, Alexander Martin Rüfer, Norbert Schlüter, Sven Schneider, Sabrina Sowka, Guido Streukens, Stefan Röder, Monika Berweiler
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Patent number: 9937483Abstract: Isophoronediamine, is prepared by A) subjecting isophoronenitrile directly in one stage to aminating hydrogenation to give isophoronediamine in the presence of ammonia, hydrogen, a hydrogenation catalyst and an optional additive, and in the presence or absence of an organic solvent; or B) first converting isophoronenitrile fully or partly in at least two or more than two stages to isophoronenitrile imine, and subjecting the isophoronenitrile imine to aminating hydrogenation to give isophoronediamine as a pure substance or in a mixture with another component and/or isophoronenitrile, in the presence of at least ammonia, hydrogen and a catalyst.Type: GrantFiled: March 28, 2016Date of Patent: April 10, 2018Assignee: Evonik Degussa GmbHInventors: Stephan Kohlstruk, Anne Rittsteiger, Alexander Martin Ruefer, Norbert Schlueter, Sven Schneider, Sabrina Sowka, Guido Streukens, Stefan Roeder, Monika Berweiler
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Publication number: 20170362163Abstract: Process for preparing isophoronediamine, characterized in that A) isophoronenitrile is subjected directly in one stage to aminating hydrogenation to give isophoronediamine in the presence of ammonia, hydrogen, a hydrogenation catalyst and possibly further additions, and in the presence or absence of organic solvents; or B) isophoronenitrile is first converted fully or partly in at least two or more than two stages to isophoronenitrile imine, and this isophoronenitrile imine is subjected to aminating hydrogenation to give isophoronediamine as a pure substance or in a mixture with other components and/or isophoronenitrile, in the presence of at least ammonia, hydrogen and a catalyst.Type: ApplicationFiled: January 26, 2016Publication date: December 21, 2017Applicant: Evonik Degussa GmbHInventors: Stephan Kohlstruk, Anne Rittsteiger, Alexander Martin Rüfer, Norbert Schlüter, Sven Schneider, Sabrina Sowka, Guido Streukens, Stefan Röder, Monika Berweiler
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Publication number: 20170298003Abstract: A process for fine purification of isophoronediamine (IPDA), including producing IPDA by aminating hydrogenation of isophorone nitrile in the presence of at least ammonia, hydrogen, a a hydrogenation catalyst and optionally further additions to obtain a crude IPDA, and subjecting the crude IPDA to a fine purification via two vacuum distillation columns, wherein in the first vacuum distillation column the removal of any remaining relatively low-boiling byproducts is effected and in the second vacuum distillation column the IPDA is obtained in pure form as tops and thus separated from the organic residues, and wherein the first vacuum distillation column has vacuum distillation column has a partial condenser fitted to it.Type: ApplicationFiled: March 30, 2017Publication date: October 19, 2017Inventors: Anne Rittsteiger, Alexander Martin Rüfer, Guido Streukens, Stephan Kohlstruk, Matthias Orschel, Matthias Mendorf, Jorn Walscharts, Axel Hengstermann, Anja Müller
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Publication number: 20160289164Abstract: Isophoronediamine, is prepared by A) subjecting isophoronenitrile directly in one stage to aminating hydrogenation to give isophoronediamine in the presence of ammonia, hydrogen, a hydrogenation catalyst and an optional additive, and in the presence or absence of an organic solvent; or B) first converting isophoronenitrile fully or partly in at least two or more than two stages to isophoronenitrile imine, and subjecting the isophoronenitrile imine to aminating hydrogenation to give isophoronediamine as a pure substance or in a mixture with another component and/or isophoronenitrile, in the presence of at least ammonia, hydrogen and a catalyst.Type: ApplicationFiled: March 28, 2016Publication date: October 6, 2016Applicant: Evonik Degussa GmbHInventors: Stephan KOHLSTRUK, Anne RITTSTEIGER, Alexander Martin RUEFER, Norbert SCHLUETER, Sven SCHNEIDER, Sabrina SOWKA, Guido STREUKENS, Stefan ROEDER, Monika BERWEILER
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Patent number: 9085506Abstract: The invention relates to an improved process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine, referred to hereinafter as isophoronediamine or, in abbreviated form, IPDA, by: I. preparation of isophorone by catalyzed aldol condensations with acetone as reactant; II. reaction of isophorone with HCN to form isophoronenitrile (IPN, 3-cyano-3,5,5-trimethylcyclohexanone); III. catalytic hydrogenation and/or catalytic reductive amination (also referred to as aminative hydrogenation) of 3-cyano-3,5,5-trimethylcyclohexanone, hereinafter called isophoronenitrile or, in abbreviated form, IPN, to give the isophoronediamine.Type: GrantFiled: November 18, 2011Date of Patent: July 21, 2015Assignee: Evonik Degussa GmbHInventors: Markus Galle, Gerda Grund, Axel Hengstermann, Michael D Hinton, Rolf Hirsch, Robert Jansen, Cord Knoop, Christian Lettmann, Juergen Lippe, Martin Maier, Joerg-Joachim Nitz, Matthias Orschel, Martina Ortelt, Norbert Richter, Armin Rix, Markus Schwarz, Guido Streukens
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Patent number: 9029412Abstract: Method for preparing diamino-dianhydro-dideoxyhexitols, particularly 2,5-diamino-1,4:3,6-dianhydro-2,5-dideoxy-D-hexitol. The invention related to a method for preparing diamino-dianhydro-dideoxyhexitols, particularly preferably 2,5-diamino-1,4:3,6-dianhydro-2,5-dideoxy-D-hexitol.Type: GrantFiled: June 28, 2011Date of Patent: May 12, 2015Assignee: Evonik Degussa GmbHInventors: Guido Streukens, Christian Lettmann, Sven Schneider
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Patent number: 8877976Abstract: The invention relates to an improved process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine, referred to hereinafter as isophoronediamine or IPDA for short, by means of catalytic hydrogenation and/or catalytic reductive amination (also referred to as aminating hydrogenation) of 3-cyano-3,5,5-trimethylcyclohexanone, also called isophoronenitrile or IPN for short hereinafter.Type: GrantFiled: November 17, 2011Date of Patent: November 4, 2014Assignee: Evonik Degussa GmbHInventors: Christian Lettmann, Guido Streukens, Matthias Orschel, Gerda Grund
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Publication number: 20130261341Abstract: The invention relates to an improved process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine, referred to hereinafter as isophoronediamine or IPDA for short, by means of catalytic hydrogenation and/or catalytic reductive amination (also referred to as aminating hydrogenation) of 3-cyano-3,5,5-trimethylcyclohexanone, also called isophoronenitrile or IPN for short hereinafter.Type: ApplicationFiled: November 17, 2011Publication date: October 3, 2013Applicant: Evonik Degussa GmbHInventors: Christian Lettmann, Guido Streukens, Matthias Orschel, Gerda Grund
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Publication number: 20130253226Abstract: The invention relates to an improved process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine, referred to hereinafter as isophoronediamine or, in abbreviated form, IPDA, by: I. preparation of isophorone by catalyzed aldol condensations with acetone as reactant; II. reaction of isophorone with HCN to form isophoronenitrile (IPN, 3-cyano-3,5,5-trimethylcyclohexanone); III. catalytic hydrogenation and/or catalytic reductive amination (also referred to as aminative hydrogenation) of 3-cyano-3,5,5-trimethylcyclohexanone, hereinafter called isophoronenitrile or, in abbreviated form, IPN, to give the isophoronediamine.Type: ApplicationFiled: November 18, 2011Publication date: September 26, 2013Applicant: Evonik Degussa GmbHInventors: Markus Galle, Gerda Grund, Axel Hengstermann, Michael D. Hinton, Rolf Hirsch, Robert Jansen, Cord Knoop, Christian Lettmann, Juergen Lippe, Martin Maier, Joerg-Joachim Nitz, Matthias Orschel, Martina Ortelt, Norbert Richter, Armin Rix, Markus Schwarz, Guido Streukens
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Publication number: 20130116451Abstract: Method for preparing diamino-dianhydro-dideoxyhexitols, particularly 2,5-diamino-1,4:3,6-dianhydro-2,5-dideoxy-D-hexitol. The invention related to a method for preparing diamino-dianhydro-dideoxyhexitols, particularly preferably 2,5-diamino-1,4:3,6-dianhydro-2,5-dideoxy-D-hexitol.Type: ApplicationFiled: June 28, 2011Publication date: May 9, 2013Applicant: EVONIK DEGUSSA GmbHInventors: Guido Streukens, Christian Lettmann, Sven Schneider
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Catalysts For Co Oxidation,Voc Combustion And Nox Reduction And Methods Of Making And Using The Same
Publication number: 20080233039Abstract: The present invention is directed to carbon monoxide oxidation reactions in the presence of an O2 containing gas, nitrogen oxide conversion reactions, volatile organic compound conversion reactions in the presence of an O2 containing gas, and combinations thereof, and catalysts for use in those reactions. The catalyst comprises cobalt, its oxides or mixtures thereof and ruthenium, its oxides or mixtures thereof.Type: ApplicationFiled: June 1, 2006Publication date: September 25, 2008Applicant: SYMYX TECHNOLOGIES, INC.Inventors: Alfred Hagemeyer, Anthony F. Volpe, Valery Sokolovskii, Andreas Lesik, Guido Streukens