Patents by Inventor Thorsten Kreickmann
Thorsten Kreickmann 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: 9840454Abstract: A process for obtaining product streams enriched with polyol esters from the secondary streams from polyol ester preparation, comprising a) the reaction of polyols of the general formula (II) H—(—O—[—CR1R2—]m—)o—OH??(II) in which R1 and R2 are each independently hydrogen, an alkyl radical having 1 to 5 carbon atoms or a hydroxyalkyl radical having 1 to 5 carbon atoms, m is an integer from 1 to 10, o is an integer from 2 to 15, with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atom, with removal of the water formed; b) the removal of unconverted starting compounds from the crude ester formed; c) the treatment of the crude ester obtained in step b) with steam to form a volatile secondary stream; and d) the removal of the volatile secondary stream obtained in step c), characterized in that the volatile secondary stream obtained in step d) is separated into an aqueous phase and an organic phase and the organic phase removed is subjected to a further treatment with steam and a produType: GrantFiled: October 9, 2014Date of Patent: December 12, 2017Assignee: OXEA GMBHInventors: Jens Kubitschke, Thorsten Kreickmann, Jörg Arnold, Heinz Strutz
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Patent number: 9580378Abstract: A batchwise process for aftertreatment of polyol esters prepared by reacting polyols of the general formula (II) H—(—O—[—CR1R2—]m—)o—OH??(II) in which R1 and R2 are each independently hydrogen, an alkyl radical having 1 to 5 carbon atoms, preferably methyl, ethyl or propyl, or a hydroxyalkyl radical having 1 to 5 carbon atoms, preferably the hydroxymethyl radical, m is an integer from 1 to 10, preferably 1 to 8 and especially 1, 2, 3 or 4, o is an integer from 2 to 15, preferably 2 to 8 and especially 2, 3, 4 or 5, with excess linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms and having a lower boiling point than the polyols used.Type: GrantFiled: August 29, 2014Date of Patent: February 28, 2017Assignee: OXEA GMBHInventors: Jens Kubitschke, Thorsten Kreickmann, Jörg Arnold, Matthias Kramer, Heinz Strutz
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Publication number: 20160229789Abstract: A process for obtaining product streams enriched with polyol esters from the secondary streams from polyol ester preparation, comprising a) the reaction of polyols of the general formula (II) H—(—O—[—CR1R2—]m—)o—OH??(II) in which R1 and R2 are each independently hydrogen, an alkyl radical having 1 to 5 carbon atoms or a hydroxyalkyl radical having 1 to 5 carbon atoms, m is an integer from 1 to 10, o is an integer from 2 to 15, with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atom, with removal of the water formed; b) the removal of unconverted starting compounds from the crude ester formed; c) the treatment of the crude ester obtained in step b) with steam to form a volatile secondary stream; and d) the removal of the volatile secondary stream obtained in step c), characterized in that the volatile secondary stream obtained in step d) is separated into an aqueous phase and an organic phase and the organic phase removed is subjected to a further treatment with steam andType: ApplicationFiled: October 9, 2014Publication date: August 11, 2016Inventors: Jens KUBITSCHKE, Thorsten KREICKMANN, Jörg ARNOLD, Heinz STRUTZ
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Publication number: 20160207871Abstract: A batchwise process for aftertreatment of polyol esters prepared by reacting polyols of the general formula (II) H—(—O—[—CR1R2—]m—)o—OH ??(II) in which R1 and R2 are each independently hydrogen, an alkyl radical having 1 to 5 carbon atoms, preferably methyl, ethyl or propyl, or a hydroxyalkyl radical having 1 to 5 carbon atoms, preferably the hydroxymethyl radical, m is an integer from 1 to 10, preferably 1 to 8 and especially 1, 2, 3 or 4, o is an integer from 2 to 15, preferably 2 to 8 and especially 2, 3, 4 or 5, with excess linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms and having a lower boiling point than the polyols used.Type: ApplicationFiled: August 29, 2014Publication date: July 21, 2016Inventors: Jens KUBITSCHKE, Thorsten KREICKMANN, Jörg ARNOLD, Matthias KRAMER, Heinz STRUTZ
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Patent number: 9388115Abstract: A process for preparing polyol esters by reacting polyols with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms, is characterized in that a mixture of the starting compounds is allowed to react in the presence of a Lewis acid containing at least one element of groups 4 to 14 of the periodic table of the elements as a catalyst and in the presence of an adsorbent with removal of the water formed, and then the crude ester obtained is aftertreated by adding a further adsorbent which is an acidic activated carbon having a pH of 1 to 6.5.Type: GrantFiled: January 28, 2016Date of Patent: July 12, 2016Assignee: OXEA GMBHInventors: Guido D. Frey, Tonia Weber, Jörg Arnold, Thorsten Kreickmann, Heinz Strutz
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Publication number: 20160137582Abstract: A process for preparing polyol esters by reacting polyols with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms, is characterized in that a mixture of the starting compounds is allowed to react in the presence of a Lewis acid containing at least one element of groups 4 to 14 of the periodic table of the elements as a catalyst and in the presence of an adsorbent with removal of the water formed, and then the crude ester obtained is aftertreated by adding a further adsorbent which is an acidic activated carbon having a pH of 1 to 6.5.Type: ApplicationFiled: January 28, 2016Publication date: May 19, 2016Inventors: Guido D. FREY, Tonia WEBER, Jörg ARNOLD, Thorsten KREICKMANN, Heinz STRUTZ
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Patent number: 9284253Abstract: A process for preparing polyol esters by reacting polyols with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms, is characterized in that a mixture of the starting compounds is allowed to react in the presence of a Lewis acid containing at least one element of groups 4 to 14 of the periodic table of the elements as a catalyst and in the presence of an adsorbent with removal of the water formed, and then the crude ester obtained is aftertreated by adding a further adsorbent which is an acidic activated carbon having a pH of 1 to 6.5.Type: GrantFiled: August 10, 2013Date of Patent: March 15, 2016Assignee: OXEA GMBHInventors: Guido D. Frey, Tonia Weber, Jörg Arnold, Thorsten Kreickmann, Heinz Strutz
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Publication number: 20150344400Abstract: A process for preparing polyol esters by reacting polyols with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms, is characterized in that a mixture of the starting compounds is allowed to react in the presence of a Lewis acid containing at least one element of groups 4 to 14 of the periodic table of the elements as a catalyst and in the presence of an adsorbent with removal of the water formed, and then the crude ester obtained is aftertreated by adding a further adsorbent which is an acidic activated carbon having a pH of 1 to 6.5.Type: ApplicationFiled: August 10, 2013Publication date: December 3, 2015Applicant: OXEA GmbHInventors: Guido D. FREY, Tonia WEBER, Jörg ARNOLD, Thorsten KREICKMANN, Heinz STRUTZ
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Patent number: 9045451Abstract: Process for obtaining ditrimethylolpropane and trimethylolpropane-enriched product streams from the high-boiling fractions and residues which are obtained in the distillative purification of trimethylolpropane, characterized in that these high-boiling fractions and residues are combined and a polar solvent is added to produce a solution and the solution is treated at a temperature of 120 to 280° C. and at a pressure of 2 to 25 MPa with hydrogen in the presence of a solid nickel catalyst and an acidic compound. After catalytic treatment, the solution is subjected to multi-stage distillation including with a thin film evaporator with a column attachment in order to recover ditrimethylolpropane and trimethylolpropane-enriched product streams.Type: GrantFiled: October 24, 2012Date of Patent: June 2, 2015Assignee: Oxea GmbHInventors: Guido D. Frey, Thorsten Kreickmann, Heinz Strutz
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Patent number: 8987523Abstract: The present invention relates to a process for obtaining ditrimethylolpropane and trimethylolpropane-enriched product streams from the high-boiling fractions and residues which are obtained in the distillative purification of trimethylolpropane, wherein an aqueous solution of these fractions and residues is catalytically hydrogenated in the presence of an acidic compound and, after removing solids, contacted both with basic and with acidic ion exchangers. A trimethylolpropane-enriched product stream can be distilled out of the aqueous eluate obtained, leaving ditrimethylolpropane as the distillation residue.Type: GrantFiled: July 28, 2011Date of Patent: March 24, 2015Assignee: Oxea GmbHInventors: Thorsten Kreickmann, Guido D. Frey, Norman Nowotny, Heinz Strutz
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Publication number: 20140296542Abstract: Process for obtaining ditrimethylolpropane and trimethylolpropane-enriched product streams from the high-boiling fractions and residues which are obtained in the distillative purification of trimethylolpropane, characterized in that these high-boiling fractions and residues are combined and a polar solvent is added to produce a solution and the solution is treated at a temperature of 120 to 280° C. and at a pressure of 2 to 25 MPa with hydrogen in the presence of a solid nickel catalyst and an acidic compound. After catalytic treatment, the solution is subjected to multi-stage distillation including with a thin film evaporator with a column attachment in order to recover ditrimethylolpropane and trimethylolpropane-enriched product streams.Type: ApplicationFiled: October 24, 2012Publication date: October 2, 2014Inventors: Guido D. Frey, Thorsten Kreickmann, Heinz Strutz
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Patent number: 8664444Abstract: A continuous process for producing primary aliphatic amines having 9 to 18 carbon atoms by reaction of corresponding aliphatic aldehydes with ammonia and hydrogen in the presence of a hydrogenation catalyst in the liquid phase, characterized in that the reaction is carried out solventlessly at a molar ratio of aliphatic aldehyde:ammonia of at least 1:30, at a temperature of 100 to 200° C. and at a pressure of 6 to 11 MPa.Type: GrantFiled: August 18, 2011Date of Patent: March 4, 2014Assignee: Oxea GmbHInventors: Kurt Schalapski, Norman Nowotny, Matthias Eisenacher, Dirk Bermann, Thorsten Kreickmann, Peter Heymanns, Heinz Strutz
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Patent number: 8664434Abstract: A process for preparing aliphatic carboxylic acids having 3 to 10 carbon atoms by oxidizing the corresponding aldehydes with oxygen or oxygen-containing gases, characterized in that (i) the oxidation is performed in a microreactor at elevated pressure and with an oxygen excess based on the stoichiometrically required amount of oxygen, and (ii) in that the reaction mixture removed from the microreactor is passed through at least one postreactor without further addition of oxygen, and (iii) wherein the oxidation reaction in the microreactor is performed under such conditions that aldehyde and corresponding peracid formed are present in the reaction mixture removed in a molar ratio within a range of 1:(0.9 to 1.1), preferably of 1:(0.95 to 1.05).Type: GrantFiled: March 3, 2010Date of Patent: March 4, 2014Assignee: Oxea GmbHInventors: Tonia Weber, Alexander Kaufmann, Oliver Borgmeier, Thorsten Kreickmann, Heinz Strutz, Diana Utz, Elias Klemm, Claudia Liebold
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Patent number: 8524938Abstract: The present invention relates to a process for lightening the color of polyol esters by reacting polyols with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms, wherein the reaction product is worked up without using adsorbents and comprises a treatment with ozone or ozone-containing gases and an immediately subsequent steam treatment with subsequent drying.Type: GrantFiled: October 6, 2010Date of Patent: September 3, 2013Assignee: Oxea GmbHInventors: Guido D. Frey, Thorsten Kreickmann, Heinz Strutz
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Publication number: 20130150624Abstract: A continuous process for producing primary aliphatic amines having 9 to 18 carbon atoms by reaction of corresponding aliphatic aldehydes with ammonia and hydrogen in the presence of a hydrogenation catalyst in the liquid phase, characterized in that the reaction is carried out solventlessly at a molar ratio of aliphatic aldehyde:ammonia of at least 1:30, at a temperature of 100 to 200° C. and at a pressure of 6 to 11 MPa.Type: ApplicationFiled: August 18, 2011Publication date: June 13, 2013Applicant: OXEA GMBHInventors: Kurt Schalapski, Norman Nowotny, Matthias Eisenacher, Dirk Bermann, Thorsten Kreickmann, Peter Heymanns, Heinz Strutz
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Publication number: 20130131391Abstract: The present invention relates to a process for obtaining ditrimethylolpropane and trimethylolpropane-enriched product streams from the high-boiling fractions and residues which are obtained in the distillative purification of trimethylolpropane, wherein an aqueous solution of these fractions and residues is catalytically hydrogenated in the presence of an acidic compound and, after removing solids, contacted both with basic and with acidic ion exchangers. A trimethylolpropane-enriched product stream can be distilled out of the aqueous eluate obtained, leaving ditrimethylolpropane as the distillation residue.Type: ApplicationFiled: July 28, 2011Publication date: May 23, 2013Applicant: OXEA GMBHInventors: Thorsten Kreickmann, Guido D. Frey, Norman Nowotny, Heinz Strutz
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Patent number: 8394998Abstract: The present invention relates to a method of producing neopentyl glycol by addition of isobutyraldehyde and formaldehyde in the presence of a tertiary alkylamine as catalyst to give the hydroxypivalinaldehyde with subsequent liquid phase hydrogenation in the presence of a nickel catalyst at a temperature of 80 to 180° C. and at a pressure of 6 to 18 MPa in the presence of an aliphatic alcohol and in the presence of water.Type: GrantFiled: June 12, 2009Date of Patent: March 12, 2013Assignee: Oxea GmbHInventors: Kurt Schalapski, Tonia Kretz, Thorsten Kreickmann, Peter Heymanns, Rainer Lukas, Rolf-Peter Schulz
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Patent number: 8158816Abstract: The present invention relates to a process for lightening the color of polyol esters by reacting polyols with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms, wherein the reaction product is worked up without using adsorbents and comprises a treatment with peroxidic compounds and an immediately subsequent steam treatment with subsequent drying.Type: GrantFiled: October 6, 2010Date of Patent: April 17, 2012Assignee: OXEA GmbHInventors: Guido D. Frey, Thorsten Kreickmann, Tonia Weber, Heinz Strutz
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Publication number: 20120035393Abstract: A process for preparing aliphatic carboxylic acids having 3 to 10 carbon atoms by oxidizing the corresponding aldehydes with oxygen or oxygen-containing gases, characterized in that (i) the oxidation is performed in a microreactor at elevated pressure and with an oxygen excess based on the stoichiometrically required amount of oxygen, and (ii) in that the reaction mixture removed from the microreactor is passed through at least one postreactor without further addition of oxygen, and (iii) wherein the oxidation reaction in the microreactor is performed under such conditions that aldehyde and corresponding peracid formed are present in the reaction mixture removed in a molar ratio within a range of 1:(0.9 to 1.1), preferably of 1:(0.95 to 1.05).Type: ApplicationFiled: March 3, 2010Publication date: February 9, 2012Inventors: Tonia Weber, Alexander Kaufmann, Oliver Borgmeier, Thorsten Kreickmann, Heinz Strutz, Diana Utz, Elias Klemm, Claudia Liebold
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Publication number: 20110086997Abstract: The present invention relates to a process for lightening the color of polyol esters by reacting polyols with linear or branched aliphatic monocarboxylic acids having 3 to 20 carbon atoms, wherein the reaction product is worked up without using adsorbents and comprises a treatment with peroxidic compounds and an immediately subsequent steam treatment with subsequent drying.Type: ApplicationFiled: October 6, 2010Publication date: April 14, 2011Inventors: Guido Frey, Thorsten Kreickmann, Tonia Weber, Heinz Strutz