Patents by Inventor Matthias Rauls
Matthias Rauls 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: 11884554Abstract: Process for precipitating a carbonate or (oxy)hydroxide comprising nickel from an aqueous solution of a nickel salt wherein such process is carried out in a vessel comprising (A) a vessel body, (B) one or more elements that control the hydraulic flow of the slurry formed during the precipitation and that induce a loop-type circulation flow, and (C) a stirrer whose stirrer element is in the vessel but located separately from the element(s) (B).Type: GrantFiled: March 21, 2019Date of Patent: January 30, 2024Assignee: BASF SEInventors: Christian Riemann, Thorsten Beierling, Matthias Rauls
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Publication number: 20220402773Abstract: A process for the recovery of lithium from waste lithium ion batteries or parts thereof is disclosed. The process comprising the steps of A) providing a crude lithium hydroxide as a solid, which contains fluoride; and (B) dissolving the crude lithium hydroxide solid with a lower alcohol such as methanol or ethanol provides good separation of lithium in high purity.Type: ApplicationFiled: November 17, 2020Publication date: December 22, 2022Inventors: Wolfgang ROHDE, Regina VOGELSANG, Kerstin SCHIERLE-ARNDT, Mattias VOGES, Birgit GERKE, Anne-Marie Caroline ZIESCHANG, Matthias RAULS
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Publication number: 20210198169Abstract: The present invention relates to a process for producing menthol particles stabilized against caking, wherein menthol particles are, following shaping, stored for at least 7 days at a temperature of 0 to 30° C., after which the menthol particles are supplied with a minimum input of mechanical energy. The present invention further relates to storage-stable menthol particles and to the use of said menthol particles in household and consumer goods of all kinds.Type: ApplicationFiled: August 14, 2019Publication date: July 1, 2021Inventors: Sebastian WLOCH, Gunnar HEYDRICH, Gerd TEBBEN, Matthias RAULS
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Publication number: 20210024371Abstract: Process for precipitating a carbonate or (oxy)hydroxide comprising nickel from an aqueous solution of a nickel salt wherein such process is carried out in a vessel comprising (A) a vessel body, (B) one or more elements that control the hydraulic flow of the slurry formed during the precipitation and that induce a loop-type circulation flow, and (C) a stirrer whose stirrer element is in the vessel but located separately from the element(s) (B).Type: ApplicationFiled: March 21, 2019Publication date: January 28, 2021Applicant: BASF SEInventors: Christian RIEMANN, Thorsten BEIERLING, Matthias RAULS
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Patent number: 10669222Abstract: The present invention relates to a process for enriching enantiomers from an enantiomer mixture by a fractionating melt crystallization in a melt crystallization apparatus. The invention specifically relates to a process for producing an enantiomer-enriched chiral terpene, in particular of D/L-Isopulegol. The process comprises: i) a crystallization step to obtain a crystallizate and a mother melt and removal of the mother melt from the crystallizate to afford a mother melt fraction; ii) sweating of the crystallizate obtained in step i) to afford a molten sweating fraction and iii) subsequent melting of the sweated crystallizate to afford a molten crystallizate fraction, wherein the optical rotation at least of the sweating fraction is determined online using a polarimeter and the changeover from step ii) to step iii) is controlled online by means of at least one control unit.Type: GrantFiled: October 5, 2017Date of Patent: June 2, 2020Assignee: BASF SEInventors: Sebastian Wloch, Gunnar Heydrich, Matthias Rauls
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Publication number: 20200039904Abstract: The present invention relates to a process for enriching enantiomers from an enantiomer mixture by a fractionating melt crystallization in a melt crystallization apparatus. The invention specifically relates to a process for producing an enantiomer-enriched chiral terpene, in particular of D/L-Isopulegol. The process comprises: i) a crystallization step to obtain a crystallizate and a mother melt and removal of the mother melt from the crystallizate to afford a mother melt fraction; ii) sweating of the crystallizate obtained in step i) to afford a molten sweating fraction and iii) subsequent melting of the sweated crystallizate to afford a molten crystallizate fraction, wherein the optical rotation at least of the sweating fraction is determined online using a polarimeter and the changeover from step ii) to step iii) is controlled online by means of at least one control unit.Type: ApplicationFiled: October 5, 2017Publication date: February 6, 2020Inventors: Sebastian WLOCH, Gunnar HEYDRICH, Matthias RAULS
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Patent number: 10294182Abstract: The present invention relates to a method for separating off a substance from a solution, in which electromagnetic radiation is radiated into the solution, an intensity of the electromagnetic radiation which has been scattered by crystals located in the solution is detected, the detected intensity is compared with a desired intensity (IS) and the temperature of the solution is regulated depending on the difference between the detected intensity and the desired intensity (IS) in such a way that the amount of this difference is reduced. If the amount of the difference between the detected intensity and the desired intensity (IS) is less than a limiting value, a crystallization method is started in which crystals of the substance are obtained which are then separated off.Type: GrantFiled: March 13, 2015Date of Patent: May 21, 2019Assignee: BASF SEInventors: Matthias Rauls, Stefan Ziegler, Martin Haubner
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Patent number: 9988331Abstract: The present invention relates to a particularly economic overall method for producing menthol, specifically for producing optically active, essentially enantiomerically and diastereomerically pure L-menthol and racemic menthol, starting from the starting material citral which is available inexpensively on an industrial scale. The method has the following steps a.1) catalytic hydrogenation of neral and/or geranial to give citronellal, b.1) cyclization of citronellal to isopulegol in the presence of an acidic catalyst, c.1) purification of isopulegol by crystallization and d.1) catalytic hydrogenation of isopulegol to give menthol.Type: GrantFiled: October 23, 2012Date of Patent: June 5, 2018Assignee: BASF SEInventors: Gunnar Heydrich, Gabriele Gralla, Matthias Rauls, Joachim Schmidt-Leithoff, Klaus Ebel, Wolfgang Krause, Steffen Oehlenschläger, Christoph Jäkel, Marko Friedrich, Eike Johannes Bergner, Nawid Kashani-Shirazi, Rocco Paciello
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Patent number: 9802884Abstract: Mixture of L- and D-enantiomers of methyl glycine diacetic acid (MGDA) or its respective mono-, di or trialkali metal or mono-, di- or triammonium salts, said mixture containing predominantly the respective L-isomer with an enantiomeric excess (ee) in the range of from 10 to 75%.Type: GrantFiled: September 5, 2014Date of Patent: October 31, 2017Assignee: BASF SEInventors: Marta Reinoso Garcia, Markus Hartmann, Kati Schmidt, Matthias Rauls, Thomas Schmidt, Paul Klingelhoefer, Alfred Oftring, Somnath Shivaji Kadam
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Publication number: 20170240494Abstract: The present invention relates to a method for separating off a substance from a solution, in which electromagnetic radiation is radiated into the solution, an intensity of the electromagnetic radiation which has been scattered by crystals located in the solution is detected, the detected intensity is compared with a desired intensity (IS) and the temperature of the solution is regulated depending on the difference between the detected intensity and the desired intensity (IS) in such a way that the amount of this difference is reduced. If the amount of the difference between the detected intensity and the desired intensity (IS) is less than a limiting value, a crystallization method is started in which crystals of the substance are obtained which are then separated off.Type: ApplicationFiled: March 13, 2015Publication date: August 24, 2017Inventors: Matthias RAULS, Stefan ZIEGLER, Martin HAUBNER
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Publication number: 20160221931Abstract: Mixture of L- and D-enantiomers of methyl glycine diacetic acid (MGDA) or its respective mono-, di or trialkali metal or mono-, di- or triammonium salts, said mixture containing predominantly the respective L-isomer with an enantiomeric excess (ee) in the range of from 10 to 75%.Type: ApplicationFiled: September 5, 2014Publication date: August 4, 2016Applicant: BASF SEInventors: Marta REINOSO GARCIA, Markus HARTMANN, Kati SCHMIDT, Matthias RAULS, Thomas SCHMIDT, Paul KLINGELHOEFER, Alfred OFTRING, Somnath Shivaji KADAM
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Publication number: 20160023982Abstract: The invention relates to a process for producing free-flowing dicarboxylic acid crystals from an aqueous solution or suspension of the dicarboxylic acid in a crystallizer.Type: ApplicationFiled: March 14, 2014Publication date: January 28, 2016Applicant: BASF SEInventors: Christian DIENES, Matthias RAULS, Oliver BEY, Matthias WEICKERT
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Patent number: 8404734Abstract: The present invention relates to novel crystalline modifications of pyraclostrobin, to processes for their preparation and to the use of the novel modifications for preparing crop protection compositions.Type: GrantFiled: September 16, 2010Date of Patent: March 26, 2013Assignee: BASF SEInventors: Hans Ziegler, Winfried Mayer, Thomas Kroehl, Karl-Heinrich Schneider, Gerhard Cox, Peter Erk, Uwe Josef Vogelbacher, Rainer Noack, Roland Goetz, Joerg Wuckelt, Matthias Rauls
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Publication number: 20130046118Abstract: The present invention relates to a particularly economic overall method for producing menthol, specifically for producing optically active, essentially enantiomerically and diastereomerically pure L-menthol and racemic menthol, starting from the starting material citral which is available inexpensively on an industrial scale. The method comprises the following steps a.1) catalytic hydrogenation of neral and/or geranial to give citronellal, b.1) cyclization of citronellal to isopulegol in the presence of an acidic catalyst, c.1) purification of isopulegol by crystallization and d.1) catalytic hydrogenation of isopulegol to give menthol.Type: ApplicationFiled: October 23, 2012Publication date: February 21, 2013Applicant: BASF SEInventors: Gunnar Heydrich, Gabriele Gralla, Matthias Rauls, Joachim Schmidt-Leithoff, Klaus Ebel, Wolfgang Krause, Steffen Oehlenschläger, Christoph Jäkel, Marko Friedrich, Eike Johannes Bergner, Nawid Kashani-Shirazi, Rocco Paciello
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Patent number: 8318985Abstract: The present invention relates to a particularly economic overall method for producing menthol, specifically for producing optically active, essentially enantiomerically and diastereomerically pure L-menthol and racemic menthol, starting from the starting material citral which is available inexpensively on an industrial scale. The method comprises the following steps a) catalytic hydrogenation of neral and/or geranial to give citronellal, b) cyclization of citronellal to isopulegol in the presence of an acidic catalyst, c) purification of isopulegol by crystallization and d) catalytic hydrogenation of isopulegol to give menthol.Type: GrantFiled: November 13, 2008Date of Patent: November 27, 2012Assignee: BASF SEInventors: Gunnar Heydrich, Gabriele Gralla, Matthias Rauls, Joachim Schmidt-Leithoff, Klaus Ebel, Wolfgang Krause, Steffen Oehlenschläger, Christoph Jäkal, Marko Friedrich, Eike Johannes Bergner, Nawid Kashani-Shirazi, Rocco Paciello
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Patent number: 8288593Abstract: The present invention relates to a method for preparing L-menthol in solid form, specifically in the form of flakes, by bringing an L-menthol melt into contact with two chilled surfaces distanced from one another. Moreover, the present invention relates to the L-menthol in solid form obtainable by said method, and also to its use for incorporation into utility and consumer goods of all kinds.Type: GrantFiled: June 9, 2008Date of Patent: October 16, 2012Assignee: BASF SEInventors: Matthias Rauls, Robert Bayer, Gunnar Heydrich, Lars Frye, Thomas Wisniewski
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Publication number: 20110054000Abstract: The present invention relates to novel crystalline modifications of pyraclostrobin, to processes for their preparation and to the use of the novel modifications for preparing crop protection compositions.Type: ApplicationFiled: September 16, 2010Publication date: March 3, 2011Applicant: BASF SEInventors: Hans ZIEGLER, Winfried MAYER, Thomas KRÖHL, Karl-Heinrich SCHNEIDER, Gerhard COX, Peter ERK, Uwe Josef VOGELBACHER, Rainer NOACK, Roland GÖTZ, Jörg WUCKELT, Matthias RAULS
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Patent number: 7868211Abstract: The present invention relates to a process for preparing enriched isopulegol by crystallization from a melt comprising isopulegol. The invention relates specifically to a process for preparing enantiomerically enriched n-isopulegol proceeding from optically active isopulegol having a relatively low enantiomeric excess by crystallization from the melt. The invention further relates to a process for preparing menthol proceeding from enantiomerically and/or diastereomerically enriched n-isopulegol prepared by crystallization from the melt.Type: GrantFiled: August 15, 2006Date of Patent: January 11, 2011Assignee: BASF SEInventors: Matthias Rauls, Christoph Jaekel, Nawid Kashani-Shirazi, Klaus Ebel
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Patent number: 7816392Abstract: The present invention relates to novel crystalline modifications of pyraclostrobin, to processes for their preparation and to the use of the novel modifications for preparing crop protection compositions.Type: GrantFiled: June 19, 2006Date of Patent: October 19, 2010Assignee: BASF AktiengesellschaftInventors: Hans Ziegler, Winfried Mayer, Thomas Kröhl, Karl-Heinrich Schneider, Gerhard Cox, Peter Erk, Uwe Josef Vogelbacher, Rainer Noack, Roland Götz, Jörg Wuckelt, Matthias Rauls
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Publication number: 20100249467Abstract: The present invention relates to a particularly economic overall method for producing menthol, specifically for producing optically active, essentially enantiomerically and diastereomerically pure L-menthol and racemic menthol, starting from the starting material citral which is available inexpensively on an industrial scale. The method comprises the following steps a.1) catalytic hydrogenation of neral and/or geranial to give citronellal, b.1) cyclization of citronellal to isopulegol in the presence of an acidic catalyst, c.1) purification of isopulegol by crystallization and d.1) catalytic hydrogenation of isopulegol to give menthol.Type: ApplicationFiled: November 13, 2008Publication date: September 30, 2010Applicant: BASF SEInventors: Gunnar Heydrich, Gabriele Gralla, Matthias Rauls, Joachim Schmidt-Leithoff, Klaus Ebel, Wolfgang Krause, Steffen Oehlenschläger, Christoph Jäkel, Marko Friedrich, Eike Johannes Bergner, Nawid Kashani-Shirazi, Rocco Paciello