Patents by Inventor Ulrich Griesbach
Ulrich Griesbach 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: 10370767Abstract: Alcohols are prepared by electrochemical reductive coupling of an aromatic vinyl compound and a carbonyl compound in a process which comprises electrolyzing an electrolyte solution in an electrochemical cell, the electrolyte solution comprising the aromatic vinyl compound, the carbonyl compound and a non-aqueous protic solvent, such as methanol, wherein the electrolyte solution is in contact with a carbon-based cathode. Styrene is reacted with acetone to prepare 2-methyl-4-phenyl-2-butanol.Type: GrantFiled: August 12, 2015Date of Patent: August 6, 2019Assignee: BASF SEInventors: Nicola Christiane Aust, Ulrich Griesbach, Ralf Pelzer, Thomas Haag, Ulrich Berens, Jörg Botzem
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Publication number: 20170233874Abstract: Alcohols are prepared by electrochemical reductive coupling of an aromatic vinyl compound and a carbonyl compound in a process which comprises electrolyzing an electrolyte solution in an electrochemical cell, the electrolyte solution comprising the aromatic vinyl compound, the carbonyl compound and a non-aqueous protic solvent, such as methanol, wherein the electrolyte solution is in contact with a carbon-based cathode Styrene is reacted with acetone to prepare 2-methyl-4-phenyl-2-butanol.Type: ApplicationFiled: August 12, 2015Publication date: August 17, 2017Inventors: Nicola Christiane AUST, Ulrich GRIESBACH, Ralf PELZER, Thomas HAAG, Ulrich BERENS, Jörg BOTZEM
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Patent number: 9435073Abstract: The present invention relates to a washing machine comprising an electrochemical cell, to a process for electrochemical cleaning of fibers, to laundry detergents for electrochemical cleaning of fibers and to the fibers thus cleaned.Type: GrantFiled: August 6, 2014Date of Patent: September 6, 2016Assignee: BASF SEInventors: Ulrich Griesbach, Steffen Maas, Florian Stecker, Andreas Fischer
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Publication number: 20140346057Abstract: The present invention relates to a washing machine comprising an electrochemical cell, to a process for electrochemical cleaning of fibers, to laundry detergents for electrochemical cleaning of fibers and to the fibers thus cleaned.Type: ApplicationFiled: August 6, 2014Publication date: November 27, 2014Applicant: BASF SEInventors: Ulrich GRIESBACH, Steffen MAAS, Florian STECKER, Andreas FISCHER
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Patent number: 8889920Abstract: The present invention relates to a process for preparing 4-isopropylcyclohexylmethanol (IPCHM) from para-cymene. The process for preparing 4-isopropylcyclohexylmethanol (IPCHM) comprises an electrochemical process for preparing a mixture of 4-isopropylbenzaldehyde dimethyl acetal and 4-(1-alkoxy-1-methylethyl)benzaldehyde dimethyl acetal, and intermediates passed through in the process, a hydrolysis step to form the corresponding benzaldehydes and a hydrogenation of this mixture to form 4-isopropylcyclohexylmethanol (IPCHM).Type: GrantFiled: February 11, 2011Date of Patent: November 18, 2014Assignee: BASF SEInventors: Florian Stecker, Ulrich Griesbach, Martin Bock, Lucia Königsmann
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Patent number: 8791276Abstract: Process for the preparation of 2-substituted 4-hydroxy-4-methyltetrahydropyrans of the formula (I) where the radical R1 is a straight-chain or branched alkyl or alkenyl radical having 1 to 12 carbon atoms, an optionally alkyl-substituted cycloalkyl radical having in total 3 to 12 carbon atoms or an optionally alkyl- and/or alkoxy-substituted aryl radical having in total 6 to 12 carbon atoms, comprising the reaction of 3-methylbut-3-en-1-ol of the formula (II) with an aldehyde of the formula (III) R1—CHO??(III), where the radical R1 has the same meaning as in formula (I) and where the reaction is carried out in the presence of water and in the presence of a strongly acidic cation exchanger, and then the isolation and/or the distillative separation is carried out in a dividing wall column or in an interconnection of (at least) two distillation columns in the form of a thermal coupling and one or more side take-off points at an absolute operating pressure of up to 500 mbar.Type: GrantFiled: June 10, 2011Date of Patent: July 29, 2014Assignee: BASF SEInventors: Gabriele Gralla, Karl Beck, Margarethe Klos, Ulrich Griesbach
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Patent number: 8692025Abstract: The invention relates to a process for the preparation of m- or p-substituted phenylalkanols of the formula (I) in which R1 is bonded to the phenyl ring in the m- or p-position and is C1-C5-alkyl, and R2, R3, R4 and R5, independently of one another, are hydrogen or methyl, wherein an unsubstituted phenylalkanol of the formula (II) in which R2, R3, R4 and R5 have the meanings given under formula (I) is alkylated together with a C1-C5-alkyl halide of the formula (III) R1-Hal??(III), in which R1 has the meaning given under formula (I) and Hal is halogen, in the presence of a Friedel-Crafts catalyst to give an m- or p-alkyl-substituted phenylalkanol of the formula (I), then the reaction mixture is worked-up and the desired m- or p-alkyl-substituted phenylalkanol of the formula (I) is separated off, the other formed by-products are returned to the reaction mixture and these are isomerized in the presence of a Friedel-Crafts catalyst to give the desired m- or p-alkyl-substituted phenylalkanol.Type: GrantFiled: October 14, 2010Date of Patent: April 8, 2014Assignee: BASF SEInventors: Andreas Lanver, Klaus Ebel, Karl Beck, Ralf Pelzer, Jörg Botzem, Ulrich Griesbach
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Patent number: 8686193Abstract: The invention relates to a process for the preparation of m-substituted phenylalkanols of the formula (I) in which R1 is C1-C5-alkyl and R2, R3, R4 and R5, independently of one another, are hydrogen or methyl, wherein a p-substituted phenylalkanol of the formula (II) in which R1, R2, R3, R4 and R5 having the meanings given under formula (I), is isomerized in the presence of a Friedel-Crafts catalyst to give an m-substituted phenylalkanol of the formula (I). From the m-substituted phenylalkanols of the formula (I) it is possible to form, by oxidation or dehydrogenation, as products of value, the corresponding aldehydes, which are known as fragrances and aroma chemicals.Type: GrantFiled: October 19, 2010Date of Patent: April 1, 2014Assignee: BASF SEInventors: Andreas Lanver, Klaus Ebel, Karl Beck, Ralf Pelzer, Jörg Botzem, Ulrich Griesbach
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Patent number: 8629304Abstract: The present invention relates to 3-tert-butylbenzaldehyde dimethyl acetal and to 3-tert-butylbenzyl methyl ether and to an electrochemical method for producing 3-tert-butyl-benzaldehyde dimethyl acetal and intermediates passed through in said method.Type: GrantFiled: March 22, 2010Date of Patent: January 14, 2014Assignee: BASF SEInventors: Florian Stecker, Andreas Fischer, Jörg Botzem, Ulrich Griesbach, Ralf Pelzer
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Patent number: 8618315Abstract: The present invention relates to a process for the preparation of 2-substituted 4-hydroxy-4-methyltetrahydropyranols by reacting 3-methylbut-3-en-1-ol (isoprenol) with the corresponding aldehydes in the presence of a strongly acidic cation exchanger. Specifically, the present invention relates to a corresponding process for the preparation of 2-isobutyl-4-hydroxy-4-methyltetrahydropyran by reacting isoprenol with isovaleraldehyde.Type: GrantFiled: May 11, 2010Date of Patent: December 31, 2013Assignee: BASF SEInventors: Gabriele Gralla, Ralf Pelzer, Klaus Ebel, Ulrich Griesbach, Jörg Botzem
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Patent number: 8614358Abstract: The present invention relates to a process for preparing 2-methyl-3-(4-tert-butyl-phenyl)propanal with high para-isomer purity, and also to a process for preparing 4-tert-butylbenzaldehyde with high para-isomer purity.Type: GrantFiled: September 16, 2011Date of Patent: December 24, 2013Assignee: BASF SEInventors: Ulrich Griesbach, Jörg Botzem, Florian Stecker
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Publication number: 20130056364Abstract: The invention provides a method for bleaching kitchenware in a dishwasher, comprising the step of the in situ activation of a bleach activator by means of a reactive oxygen species, where the reactive oxygen species is generated in situ in the dishwasher by electrolysis of an aqueous solution.Type: ApplicationFiled: September 5, 2012Publication date: March 7, 2013Applicant: BASF SEInventors: Florian Stecker, Steffen Maas, Ulrich Griesbach, Andreas Fischer
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Patent number: 8367875Abstract: The invention relates to a process for the preparation of m-substituted alkyltoluenes of the formula (I) in which R1 is C1-C5-alkyl, wherein a p-substituted alkyltoluene of the formula (II) in which R1 has the meaning given under formula (I), is isomerized in the presence of ionic liquids to give an m-substituted alkyltoluene of the formula (I). The m-substituted alkyltoluenes obtainable according to the invention are starting compounds for the preparation of fragrances and aroma substances.Type: GrantFiled: February 10, 2011Date of Patent: February 5, 2013Assignee: BASF SEInventors: Andreas Lanver, Klaus Ebel, Karl Beck, Ralf Pelzer, Jörg Botzem, Ulrich Griesbach
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Publication number: 20120209031Abstract: The invention relates to a process for the preparation of m-substituted phenylalkanols of the formula (I) in which R1 is C1-C5-alkyl and R2, R3, R4 and R5, independently of one another, are hydrogen or methyl, wherein a p-substituted phenylalkanol of the formula (II) in which R1, R2, R3, R4 and R5 having the meanings given under formula (I), is isomerized in the presence of a Friedel-Crafts catalyst to give an m-substituted phenylalkanol of the formula (I). From the m-substituted phenylalkanols of the formula (I) it is possible to form, by oxidation or dehydrogenation, as products of value, the corresponding aldehydes, which are known as fragrances and aroma chemicals.Type: ApplicationFiled: October 19, 2010Publication date: August 16, 2012Applicant: BASF SEInventors: Andreas Lanver, Klaus Ebel, Karl Beck, Ralf Pelzer, Jörg Botzem, Ulrich Griesbach
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Publication number: 20120209030Abstract: The invention relates to a process for the preparation of m- or p-substituted phenylalkanols of the formula (I) in which R1 is bonded to the phenyl ring in the m- or p-position and is C1-C5-alkyl, and R2, R3, R4 and R5, independently of one another, are hydrogen or methyl, wherein an unsubstituted phenylalkanol of the formula (II) in which R2, R3, R4 and R5 have the meanings given under formula (I) is alkylated together with a C1-C5-alkyl halide of the formula (III) R1-Hal??(III), in which R1 has the meaning given under formula (I) and Hal is halogen, in the presence of a Friedel-Crafts catalyst to give an m- or p-alkyl-substituted phenylalkanol of the formula (I), then the reaction mixture is worked-up and the desired m- or p-alkyl-substituted phenylalkanol of the formula (I) is separated off, the other formed by-products are returned to the reaction mixture and these are isomerized in the presence of a Friedel-Crafts catalyst to give the desired m- or p-alkyl-substituted phenylalkanol.Type: ApplicationFiled: October 14, 2010Publication date: August 16, 2012Applicant: BASF SEInventors: Andreas Lanver, Klaus Ebel, Karl Beck, Ralf Pelzer, Jörg Botzem, Ulrich Griesbach
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Publication number: 20120059177Abstract: The present invention relates to a process for the preparation of 2-substituted 4-hydroxy-4-methyltetrahydropyranols by reacting 3-methylbut-3-en-1-ol (isoprenol) with the corresponding aldehydes in the presence of a strongly acidic cation exchanger. Specifically, the present invention relates to a corresponding process for the preparation of 2-isobutyl-4-hydroxy-4-methyltetrahydropyran by reacting isoprenol with isovaleraldehyde.Type: ApplicationFiled: May 11, 2010Publication date: March 8, 2012Applicant: BASF SEInventors: Gabriele Gralla, Ralf Pelzer, Klaus Ebel, Ulrich Griesbach, Jörg Botzem
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Publication number: 20120031771Abstract: The invention relates to a process for preparing reactive zinc by electrochemical reduction, wherein iron or steel is used as cathode material.Type: ApplicationFiled: April 7, 2010Publication date: February 9, 2012Applicant: BASF SEInventors: Itamar Michael Malkowsky, Daniela Mirk, Marc Martin, Laszlo Szarvas, Markus Brueggemann, Steven Brughmans, Daniel Breuninger, Gerrit Waters, Ulrich Griesbach, Andreas Fischer
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Publication number: 20120016162Abstract: The present invention relates to 3-tert-butylbenzaldehyde dimethyl acetal and to 3-tert-butylbenzyl methyl ether and to an electrochemical method for producing 3-tert-butyl-benzaldehyde dimethyl acetal and intermediates passed through in said method.Type: ApplicationFiled: March 27, 2009Publication date: January 19, 2012Applicant: BASF SEInventors: Florian Stecker, Andreas Fischer, Jörg Botzem, Ulrich Griesbach, Ralf Pelzer
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Publication number: 20110306779Abstract: Process for the preparation of 2-substituted 4-hydroxy-4-methyltetrahydropyrans of the formula (I) where the radical R1 is a straight-chain or branched alkyl or alkenyl radical having 1 to 12 carbon atoms, an optionally alkyl-substituted cycloalkyl radical having in total 3 to 12 carbon atoms or an optionally alkyl- and/or alkoxy-substituted aryl radical having in total 6 to 12 carbon atoms, comprising the reaction of 3-methylbut-3-en-1-ol of the formula (II) with an aldehyde of the formula (III) R1—CHO??(III), where the radical R1 has the same meaning as in formula (I) and where the reaction is carried out in the presence of water and in the presence of a strongly acidic cation exchanger, and then the isolation and/or the distillative separation is carried out in a dividing wall column or in an interconnection of (at least) two distillation columns in the form of a thermal coupling and one or more side take-off points at an absolute operating pressure of up to 500 mbar.Type: ApplicationFiled: June 10, 2011Publication date: December 15, 2011Applicant: BASF SEInventors: Gabriele Gralla, Karl Beck, Margarethe Klos, Ulrich Griesbach
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Publication number: 20110237484Abstract: The present invention relates to a washing machine comprising an electrochemical cell, to a process for electrochemical cleaning of fibers, to laundry detergents for electrochemical cleaning of fibers and to the fibers thus cleaned.Type: ApplicationFiled: March 24, 2011Publication date: September 29, 2011Applicant: BASF SEInventors: Ulrich GRIESBACH, Steffen Maas, Florian Stecker, Andreas Fischer