Patents by Inventor Richard Dehn
Richard Dehn 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: 20240010597Abstract: A process for the preparation of a color stable C6-12 saturated aliphatic carboxylic acid in which (1) the corresponding aldehyde is oxidized with molecular oxygen to obtain the crude saturated aliphatic carboxylic acid in a liquid mixture, (2) molecular oxygen removed from the crude saturated aliphatic carboxylic acid mixture, and (3) the saturated aliphatic carboxylic acid separated from the molecular oxygen depleted mixture by distillation as a color stable product.Type: ApplicationFiled: August 9, 2021Publication date: January 11, 2024Inventors: Jessica Nadine HAMANN, Joaquim Henrique TELES, Peter Georg OHLEMUELLER, Friedemann GAITZSCH, Shelue LIANG, Stefan RITTINGER, Frauke THRUN, Richard DEHN
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Publication number: 20230017999Abstract: The present invention relates to a process for purification of a mixture comprising water, N-alkyl-hydroxylammonium salts and some byproducts wherein from the mixture water and byproducts are distilled off until the purity of N-alkyl-hydroxylammonium salts in the residue is 95% or higher and additionally keeping the water content during and after the distillation ?40 wt.-% according to the residue.Type: ApplicationFiled: November 23, 2020Publication date: January 19, 2023Inventors: Jaroslaw Michael MORMUL, Dieter KOLASSA, Dominic RIEDEL, Joaquim Henrique TELES, Ansgar Gereon ALTENHOFF, Richard DEHN, Peter OECHSLE
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Patent number: 10618873Abstract: The present invention relates to a process for preparing C4-C15 lactams, in which a C1-C10-alkyl nitrite is reacted with a C4-C15-cycloalkane and is illuminated with a light-emitting diode during the reaction. This forms a C4-C15-cyclohexanone oxime which is then converted further to a C4-C15 lactam; the C1-C10 alcohol formed is recycled into the preparation of the C1-C10-alkyl nitrite.Type: GrantFiled: January 30, 2017Date of Patent: April 14, 2020Assignee: BASF SEInventors: Richard Dehn, Ahmad Dehestani, Klemens Massonne, Steffen Waglöhner, Joaquim Henrique Teles, Thomas Schaub, Till Christian Brüggemann, Carlos Tellaeche Herranz, Oliver Trapp, Jedrzej Wysocki
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Patent number: 10428039Abstract: Provided herein is a process for preparing furan-2,5-dicarboxylic acid. The process includes the following steps: (A-1) preparing a starting mixture comprising one, two or more carbohydrate compounds selected from the group consisting of: hexoses, oligosaccharides comprising hexose units, and polysaccharides including hexose units, and as a solvent or as a co-solvent for the carbohydrate compounds an amount of one or more carboxylic acid esters of a formula (II) and (A-2) subjecting the starting mixture to reaction conditions so that at least one of the one, two or more carbohydrate compounds reacts, and a fraction of the amount of one or more carboxylic acid esters of formula (II) is hydrolyzed, resulting in a mixture including 5-(hydroxymethyl)furfural and/or the one or more HMF esters of a formula (I), one or more carboxylic acids of a formula (III) and a remaining fraction of the amount of one or more carboxylic acid esters of formula (II).Type: GrantFiled: November 3, 2016Date of Patent: October 1, 2019Assignee: BASF SEInventors: Alvaro Gordillo, Martin Alexander Bohn, Stephan A. Schunk, Ivana Jevtovikj, Rene Backes, Holger Werhan, Svenia Duefert, Richard Dehn, Markus Piepenbrink
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Patent number: 10385033Abstract: A process for preparing furan-2,5-dicarboxylic acid is disclosed. The process includes the following steps: preparing or providing a starting mixture including 5-(hydroxy-methyl)furfural (HMF), 5,5?-[oxy-bis(methylene)]bis-2-furfural (di-HMF), and water; subjecting said starting mixture to oxidation conditions in the presence of an oxygen-containing gas and a catalytically effective amount of a heterogeneous catalyst including one or more noble metals on a support so that both HMF and di-HMF react to give furane-2,5-dicarboxylic acid in a product mixture also including water and oxidation by-products. The use of a catalyst is also disclosed, the catalyst including one or more noble metals on a support as an heterogeneous oxidation catalyst for catalyzing in an aqueous starting mixture the reaction of both HMF and di-HMF to furane-2,5-dicarboxylic acid.Type: GrantFiled: July 1, 2016Date of Patent: August 20, 2019Assignee: BASF SEInventors: Alvaro Gordillo, Holger Werhan, Richard Dehn, Benoit Blank, Joaquim Henrique Teles, Stephan A Schunk, Markus Piepenbrink, Rene Backes, Lei Zhang
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Patent number: 10364231Abstract: The invention relates to a method for producing 2,3,5-trimethyl benzoquinone or a compound containing 2,3,5-trimethyl benzoquinone, the method comprising the following steps: Oxidation of 2,3,6-trimethylphenol with oxygen or an oxygen-containing gas in a two-or multi-phase reaction medium in the presence of a catalyst or catalyst system containing at least one copper (II)-halide to a mixture containing 2,3,5-trimethyl benzoquinone, characterized in that the reaction medium contains water and at least one secondary aliphatic acyclic alcohol having 6 or more, preferably 7 or more, carbon atoms.Type: GrantFiled: August 14, 2017Date of Patent: July 30, 2019Assignee: BASF SEInventors: Richard Dehn, Michael Kraus, Martine Dehn, Manuel Danz, Joaquim Henrique Teles
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Patent number: 10259797Abstract: Provided herein is a process for preparing a mixture including 5-(hydroxy-methyl)furfural (HMF) and one or more HMF esters of formula (I), the process including the following steps: (A-1) preparing or providing a starting mixture which includes one, two or more carbohydrate compounds and as the solvent or as a co-solvent for the carbohydrate compounds an amount of one or more carboxylic acid esters of formula (II); (A-2) subjecting the starting mixture to reaction conditions so that at least one of the one, two or more carbohydrate compounds reacts, and a fraction of the amount of one or more carboxylic acid esters of formula (II) is hydrolyzed, so that a mixture results that includes 5-(hydroxy-methyl)furfural and/or the one or more HMF esters of formula (I), one or more carboxylic acids of formula (III) and a remaining fraction of the amount of one or more carboxylic acid esters of formula (II).Type: GrantFiled: November 3, 2016Date of Patent: April 16, 2019Assignee: BASF SEInventors: Alvaro Gordillo, Martin Alexander Bohn, Stephan A Schunk, Ivana Jevtovikj, Holger Werhan, Svenia Duefert, Markus Piepenbrink, Rene Backes, Richard Dehn
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Publication number: 20190040005Abstract: The present invention relates to a process for preparing C4-C15 lactams, in which a C1-C10-alkyl nitrite is reacted with a C4-C15-cycloalkane and is illuminated with a light-emitting diode during the reaction. This forms a C4-C15-cyclohexanone oxime which is then converted further to a C4-C15 lactam; the C1-C10 alcohol formed is recycled into the preparation of the C1-C10-alkyl nitrite.Type: ApplicationFiled: January 30, 2017Publication date: February 7, 2019Inventors: Richard DEHN, Ahmad DEHESTANI, Klemens MASSONNE, Steffen WAGLÖHNER, Joaquim Henrique TELES, Thomas SCHAUB, Till Christian BRÜGGEMANN, Carlos TELLAECHE HERRANZ, Oliver TRAPP, Jedrzej WYSOCKI
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Publication number: 20180319759Abstract: Provided herein is a process for preparing a mixture including 5-(hydroxy-methyl)furfural (HMF) and one or more HMF esters of formula (I), the process including the following steps: (A-1) preparing or providing a starting mixture which includes one, two or more carbohydrate compounds and as the solvent or as a co-solvent for the carbohydrate compounds an amount of one or more carboxylic acid esters of formula (II); (A-2) subjecting the starting mixture to reaction conditions so that at least one of the one, two or more carbohydrate compounds reacts, and a fraction of the amount of one or more carboxylic acid esters of formula (II) is hydrolyzed, so that a mixture results that includes 5-(hydroxy-methyl)furfural and/or the one or more HMF esters of formula (I), one or more carboxylic acids of formula (III) and a remaining fraction of the amount of one or more carboxylic acid esters of formula (II).Type: ApplicationFiled: November 3, 2016Publication date: November 8, 2018Inventors: Alvaro Gordillo, Martin Alexander Bohn, Stephan A Schunk, Ivana Jevtovikj, Holger Werhan, Svenia Duefert, Markus Piepenbrink, Rene Backes, Richard Dehn
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Publication number: 20180319758Abstract: Provided herein is a process for preparing furan-2,5-dicarboxylic acid. The process includes the following steps: (A-1) preparing a starting mixture comprising one, two or more carbohydrate compounds selected from the group consisting of: hexoses, oligosaccharides comprising hexose units, and polysaccharides including hexose units, and as a solvent or as a co-solvent for the carbohydrate compounds an amount of one or more carboxylic acid esters of a formula (II) and (A-2) subjecting the starting mixture to reaction conditions so that at least one of the one, two or more carbohydrate compounds reacts, and a fraction of the amount of one or more carboxylic acid esters of formula (II) is hydrolyzed, resulting in a mixture including 5-(hydroxymethyl)furfural and/or the one or more HMF esters of a formula (I), one or more carboxylic acids of a formula (III) and a remaining fraction of the amount of one or more carboxylic acid esters of formula (II).Type: ApplicationFiled: November 3, 2016Publication date: November 8, 2018Inventors: Alvaro Gordillo, Martin Alexander Bohn, Stephan A Schunk, Ivana Jevtovikj, Rene Backes, Holger Werhan, Svenia Duefert, Richard Dehn, Markus Piepenbrink
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Patent number: 10112882Abstract: The present invention relates to new types of cyclic carbaldehydes, the preparation thereof and the use as aromachemical, in particular as fragrance, and to aroma substance compositions and products comprising these carbaldehydes.Type: GrantFiled: September 30, 2015Date of Patent: October 30, 2018Assignee: BASF SEInventors: Frauke Thrun, Joaquim Henrique Teles, Albert Werner, Richard Dehn, Ralf Pelzer, Stephan Maurer
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Publication number: 20180230076Abstract: The present invention relates to new types of cyclic carbaldehydes, the preparation thereof and the use as aromachemical, in particular as fragrance, and to aroma substance compositions and products comprising these carbaldehydes.Type: ApplicationFiled: September 30, 2015Publication date: August 16, 2018Inventors: Frauke THRUN, Joaquim Henrique Teles, Albert Werner, Richard Dehn, Ralf Pelzer, Stephan Maurer
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Publication number: 20180215724Abstract: A process for preparing furan-2,5-dicarboxylic acid is disclosed. The process includes the following steps: preparing or providing a starting mixture including 5-(hydroxy-methyl)furfural (HMF), 5,5?-[oxy-bis(methylene)]bis-2-furfural (di-HMF), and water; subjecting said starting mixture to oxidation conditions in the presence of an oxygen-containing gas and a catalytically effective amount of a heterogeneous catalyst including one or more noble metals on a support so that both HMF and di-HMF react to give furane-2,5-dicarboxylic acid in a product mixture also including water and oxidation by-products. The use of a catalyst is also disclosed, the catalyst including one or more noble metals on a support as an heterogeneous oxidation catalyst for catalyzing in an aqueous starting mixture the reaction of both HMF and di-HMF to furane-2,5-dicarboxylic acid.Type: ApplicationFiled: July 1, 2016Publication date: August 2, 2018Inventors: Alvaro Gordillo, Holger Werhan, Richard Dehn, Benoit Blank, Joaquim Henrique Teles, Stephan A Schunk, Markus Piepenbrink, Rene Backes, Lei Zhang
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Publication number: 20180201599Abstract: The invention relates to a method for producing 2,3,5-trimethyl benzoquinone or a compound containing 2,3,5-trimethyl benzoquinone, the method comprising the following steps: Oxidation of 2,3,6-trimethylphenol with oxygen or an oxygen-containing gas in a two- or multi-phase reaction medium in the presence of a catalyst or catalyst system containing at least one copper (II)-halide to a mixture containing 2,3,5-trimethyl benzoquinone, characterized in that the reaction medium contains water and at least one secondary aliphatic acyclic alcohol having 6 or more, preferably 7 or more, carbon atoms.Type: ApplicationFiled: August 14, 2017Publication date: July 19, 2018Inventors: Richard DEHN, Michael KRAUS, Martine DEHN, Manuel DANZ, Joaquin Henrique TELES
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Patent number: 9926248Abstract: The invention relates to a method for producing 2,3,5-trimethyl benzoquinone or a compound containing 2,3,5-trimethyl benzoquinone, the method comprising the following steps: Oxidation of 2,3,6-trimethylphenol with oxygen or an oxygen-containing gas in a two- or multi-phase reaction medium in the presence of a catalyst or catalyst system containing at least one copper (II)-halide to a mixture containing 2,3,5-trimethyl benzoquinone, characterized in that the reaction medium contains water and at least one secondary aliphatic acyclic alcohol having 6 or more, preferably 7 or more, carbon atoms.Type: GrantFiled: June 25, 2014Date of Patent: March 27, 2018Assignee: BASF SEInventors: Joaquim Henrique Teles, Joachim Simon, Martine Dehn, Manuel Danz, Richard Dehn
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Patent number: 9758504Abstract: The invention relates to a method for producing 2,3,5-trimethyl benzoquinone or a compound containing 2,3,5-trimethyl benzoquinone, the method comprising the following steps: Oxidation of 2,3,6-trimethylphenol with oxygen or an oxygen-containing gas in a two- or multi-phase reaction medium in the presence of a catalyst or catalyst system containing at least one copper (II)-halide to a mixture containing 2,3,5-trimethyl benzoquinone, characterized in that the reaction medium contains water and at least one secondary aliphatic acyclic alcohol having 6 or more, preferably 7 or more, carbon atoms.Type: GrantFiled: June 25, 2014Date of Patent: September 12, 2017Assignee: BASF SEInventors: Richard Dehn, Michael Kraus, Martine Dehn, Manuel Danz, Joaquim Henrique Teles
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Publication number: 20160368887Abstract: The invention relates to a method for producing 2,3,5-trimethyl benzoquinone or a compound containing 2,3,5-trimethyl benzoquinone, the method comprising the following steps: Oxidation of 2,3,6-trimethylphenol with oxygen or an oxygen-containing gas in a two-or multi-phase reaction medium in the presence of a catalyst or catalyst system containing at least one copper (II)-halide to a mixture containing 2,3,5-trimethyl benzoquinone, characterized in that the reaction medium contains water and at least one secondary aliphatic acyclic alcohol having 6 or more, preferably 7 or more, carbon atoms.Type: ApplicationFiled: June 25, 2014Publication date: December 22, 2016Inventors: Richard DEHN, Michael KRAUS, Martine DEHN, Manuel DANZ, Joaquim Henrique TELES
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Publication number: 20160368843Abstract: The invention relates to a method for producing 2,3,5-trimethyl benzoquinone or a compound containing 2,3,5-trimethyl benzoquinone, the method comprising the following steps: Oxidation of 2,3,6-trimethylphenol with oxygen or an oxygen-containing gas in a two- or multi-phase reaction medium in the presence of a catalyst or catalyst system containing at least one copper (II)-halide to a mixture containing 2,3,5-trimethyl benzoquinone, characterized in that the reaction medium contains water and at least one secondary aliphatic acyclic alcohol having 6 or more, preferably 7 or more, carbon atoms.Type: ApplicationFiled: June 25, 2014Publication date: December 22, 2016Applicant: BASF SEInventors: Joaquim Henrique TELES, Joachim SIMON, Martine DEHN, Manuel DANZ, Richard DEHN
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Patent number: 8993819Abstract: The present invention provides a process for preparing cycloheptene and derivatives thereof by ring-closing metathesis of unsymmetric 1,8-dienes whose C—C double bond at the 8 position is nonterminal. Cycloheptene and the cycloheptanone, cycloheptylamine, cycloheptanecarbaldehyde, cycloheptanecarboxylic acid and cycloheptanecarbonyl chloride conversion products thereof, and the derivatives thereof, are important synthesis units for active ingredient compounds. The ring-closing metathesis is preferably performed as a reactive distillation. The unsymmetric 1,8-dienes for the ring-closing metathesis can be obtained by catalytic decarbonylation or oxidative decarboxylation from the corresponding unsaturated carboxylic acids or carboxylic acid derivatives.Type: GrantFiled: July 10, 2012Date of Patent: March 31, 2015Assignee: BASF SEInventors: Joaquim Henrique Teles, Michael Limbach, Richard Dehn, Stephan Deuerlein, Manuel Danz
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Patent number: 8940940Abstract: The present invention relates to a process for preparing cyclic compounds having at least eight carbon atoms and at least one keto group, to the cyclic compounds obtained by this process and to the use thereof, in particular as fragrance or for providing a fragrance.Type: GrantFiled: June 12, 2013Date of Patent: January 27, 2015Assignee: BASF SEInventors: Richard Dehn, Joaquim Henrique Teles, Michael Limbach, Stephan Deuerlein, Manuel Danz, Ralf Pelzer, Daniel Schneider