Patents by Inventor Armin Stamm
Armin Stamm 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: 20230135390Abstract: A process for making a complexing agent with an enantiomeric excess of at least 60%, wherein said process comprises the following steps: (a) reacting an aqueous slurry of alanine with an enantiomeric excess of at least 60% with formaldehyde and hydrocyanic acid, thereby forming an aqueous solution of alanine-bisacetonitrile, (b) saponifying the alanine-bisacetonitrile from step (a) by combining the aqueous solution obtained in step (a) with an aqueous solution of alkali metal hydroxide.Type: ApplicationFiled: February 25, 2021Publication date: May 4, 2023Inventors: Thomas SCHMIDT, Armin STAMM, Dan-Tam Daniel TANG, Nataliia SHYMANSKA, Verena MORMUL
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Patent number: 11485703Abstract: The present invention is directed towards a process for manufacturing a complexing agent, said process comprising the steps of (a) Providing a nitrile according to general formula (I a) or (I b) With M being selected from alkali metal and hydrogen and combinations thereof, (b) Saponification with a total alkali amount of 2.5 to 2.9 mol of alkali metal hydroxide per mole of nitrile according to general formula (I a) or (I b), respectively, and a pH value in the range of from 9.5 to 11.5 at the end of step (b), (c) Adding an amount of alkali metal hydroxide so that the total alkali content is 2.9 to 3.15 moles per mole nitrile according to general formula (I a) or (I b), respectively, and (d) Allowing further conversion.Type: GrantFiled: June 19, 2018Date of Patent: November 1, 2022Assignee: BASF SEInventors: Thomas Schmidt, Armin Stamm, Marta Reinoso Garcia, Verena Mormul, Michael Klemens Mueller, Frank Jaekel, Jeremy T Manning
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Patent number: 11028350Abstract: Process for making a powder or granule containing at least one chelating agent selected from alkali metal salts of methyl glycine diacetic acid (MGDA) and glutamic acid diacetate (GLDA) and iminodisuccinic acid (IDS), said process comprising the steps of (a) introducing an aqueous solution or aqueous slurry of the respective chelating agent (A) into a spray-dryer or spray-granulator, and removing most of said water by spray-drying or spray granulation using a gas with an inlet temperature of 125 to 250° C.Type: GrantFiled: June 1, 2017Date of Patent: June 8, 2021Assignee: BASF SEInventors: Michael Klemens Mueller, Armin Stamm, Frank Jaekel, Carsten Sueling
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Publication number: 20210162839Abstract: A device for a ventilation system. An air-conditioning unit comprising a rear wall is arranged such that it is oriented, with the rear wall thereof, towards the module or space to be ventilated such that it is to be reached from said module or space. An interface for air output is arranged on the rear wall, said interface being divided into a plurality of air output points. Said air output points are arranged in different positions on the rear wall. Since all of the air output points do not need to be used, a controller for controlling the air output, which can prevent or enable the air output at the air output points, are associated with the air output points.Type: ApplicationFiled: December 11, 2020Publication date: June 3, 2021Applicant: Rheinmetall Landsysteme GmbHInventors: Armin STAMM, Eckhard SCHWARTZ
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Publication number: 20210094902Abstract: The present invention is directed towards a process for manufacturing a complexing agent, said process comprising the steps of (a) Providing a nitrile according to general formula (I a) or (I b) (formula I a, I b) With M being selected from alkali metal and hydrogen and combinations thereof, (b) Saponification with a total alkali amount of 2.5 to 2.9 mol of alkali metal hydroxide per mole of nitrile according to general formula (I a) or (I b), respectively, and a pH value in the range of from 9.5 to 11.5 at the end of step (b), (c) Adding an amount of alkali metal hydroxide so that the total alkali content is 2.9 to 3.1 moles per mole nitrile according to general formula (I a) or (I b), respectively, and (d) Allowing further conversion.Type: ApplicationFiled: June 19, 2018Publication date: April 1, 2021Inventors: Thomas SCHMIDT, Armin STAMM, Marta REINOSO GARCIA, Verena MORMUL, Michael Klemens MUELLER, Frank JAEKEL, Jeremy T. MANNING
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Publication number: 20200062695Abstract: Process for making a chelating agent according to the general formula (I), R1—CH(COOX1)—N(CH2COOX1)2??(I) wherein R1 is selected from hydrogen, C1-C4-alkyl, phenyl, benzyl, CH2OH, and CH2CH2COOX1, X1 is (MxH1-x), M being selected from alkali metal, x is in the range of from 0.6 to 1, said process comprising the following steps: (a) providing a solid, a slurry or a solution of a compound according to general formula (II a) R1—CH(COOX2)—N(CH2CN)2??(II a) wherein X2 is (MyH1-y), M being selected from alkali metal, y is in the range of from zero to 1, (b) contacting said solid or slurry or solution with an aqueous solution of alkali metal hydroxide, wherein the molar ratio of alkali metal ions to nitrile groups is in the range of from 0.6:1 to 0.95:1, (c) reacting said compound according to general formula (II a) with said alkali metal hydroxide.Type: ApplicationFiled: October 28, 2019Publication date: February 27, 2020Applicant: BASF SEInventors: Armin STAMM, Thomas Schmidt, Christopher Orr, Jeremy Manning
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Patent number: 10519097Abstract: Process for making a chelating agent according to the general formula (I), R1—CH(COOX1)—N(CH2COOX1)2 wherein R1 is selected from hydrogen, C1-C4-alkyl, phenyl, benzyl, CH2OH, and CH2CH2COOX1, X1 is (M?H1??), M being selected from alkali metal, x is in the range of from 0.6 to 1, said process comprising the following steps: (a) providing a solid, a slurry or a solution of a compound according to general formula (II a) R1—CH(COOX2)—N(CH2CN)2 wherein X2 is (MyH1?y), M being selected from alkali metal, y is in the range of from zero to 1, (b) contacting said solid or slurry or solution with an aqueous solution of alkali metal hydroxide, wherein the molar ratio of alkali metal ions to nitrile groups is in the range of from 0.6:1 to 0.95:1, (c) reacting said compound according to general formula (II a) with said alkali metal hydroxide.Type: GrantFiled: May 3, 2016Date of Patent: December 31, 2019Assignee: BASF SEInventors: Armin Stamm, Thomas Schmidt, Christopher Orr, Jeremy Manning
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Patent number: 10421711Abstract: Process for manufacturing a crystalline alkali metal salt of the general formula (I) [R1—CH(COO)—N(CH2—COO)2]M13 (I) wherein M1 is selected from alkali metal cations, same or different, R1 is selected from C1-C4-alkyl and CH2CH2COOM1, comprising the step of (b) crystallizing said alkali metal salt from an aqueous solution containing in the range of from 5 to 30% by weight of alkali metal hydroxide, referring to said aqueous solution.Type: GrantFiled: December 7, 2016Date of Patent: September 24, 2019Assignee: BASF SEInventors: Constanze Franzke, Axel Franzke, Armin Stamm, Markus Hartmann, Robert Baumann
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Publication number: 20190119611Abstract: Process for making a powder or granule containing at least one chelating agent selected from alkali metal salts of methyl glycine diacetic acid (MGDA) and glutamic acid diacetate (GLDA) and iminodisuccinic acid (IDS), said process comprising the steps of (a) introducing an aqueous solution or aqueous slurry of the respective chelating agent (A) into a spray-dryer or spray-granulator, and removing most of said water by spray-drying or spray granulation using a gas with an inlet temperature of 125 to 250° C.Type: ApplicationFiled: June 1, 2017Publication date: April 25, 2019Applicant: BASF SEInventors: Michael Klemens MUELLER, Armin STAMM, Frank JAEKEL, Carsten SUELING
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Publication number: 20180354891Abstract: Process for manufacturing a crystalline alkali metal salt of the general formula (I) [R1—CH(COO)—N(CH2—COO)2]M13 (I) wherein M1 is selected from alkali metal cations, same or different, R1 is selected from C1-C4-alkyl and CH2CH2COOM1, comprising the step of (b) crystallizing said alkali metal salt from an aqueous solution containing in the range of from 5 to 30% by weight of alkali metal hydroxide, referring to said aqueous solution.Type: ApplicationFiled: December 7, 2016Publication date: December 13, 2018Applicant: BASF SEInventors: Constanze FRANZKE, Axel FRANZKE, Armin STAMM, Markus HARTMANN, Robert BAUMANN
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Publication number: 20180105486Abstract: Process for making a chelating agent according to the general formula (I), R1—CH(COOX1)—N(CH2COOX1)2 wherein R1 is selected from hydrogen, C1-C4-alkyl, phenyl, benzyl, CH2OH, and CH2CH2COOX1, X1 is (M?H1-?), M being selected from alkali metal, x is in the range of from 0.6 to 1, said process comprising the following steps: (a) providing a solid, a slurry or a solution of a compound according to general formula (II a) R1—CH(COOX2)—N(CH2CN)2 wherein X2 is (MyH1-y), M being selected from alkali metal, y is in the range of from zero to 1, (b) contacting said solid or slurry or solution with an aqueous solution of alkali metal hydroxide, wherein the molar ratio of alkali metal ions to nitrile groups is in the range of from 0.6:1 to 0.95:1, (c) reacting said compound according to general formula (II a) with said alkali metal hydroxide.Type: ApplicationFiled: May 3, 2016Publication date: April 19, 2018Applicant: BASF SEInventors: Armin STAMM, Thomas SCHMIDT, Christopher ORR, Jeremy MANNING
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Solutions of trialkali metal salts of MGDA with an excess of L-enantiomer, their manufacture and use
Patent number: 9873659Abstract: Aqueous solution containing in the range of from 60.5 to 75% by weight of a mixture of trialkalimetal salts of the L-and D-enantiomers of methyl glycine diacetic acid (MGDA), said mixture containing predominantly the respective L-isomer with an enantiomeric excess (ee) in the range of from 3 to 97%, wherein said trialkali metal salts have the general formula (I) [CH3—CH(COO)—N(CH2—COO)2]K3?xNax (I) wherein x is in the range of from zero to 2.9.Type: GrantFiled: October 7, 2015Date of Patent: January 23, 2018Assignee: BASF SEInventors: Marta Reinoso Garcia, Constanze Franzke, Armin Stamm -
Publication number: 20170247318Abstract: Aqueous solution containing in the range of from 60.5 to 75% by weight of a mixture of trialkalimetal salts of the L- and D-enantiomers of methyl glycine diacetic acid (MGDA), said mixture containing predominantly the respective L-isomer with an enantiomeric excess (ee) in the range of from 3 to 97%, wherein said trialkali metal salts have the general formula (I) [CH3—CH(COO)—N(CH2—COO)2]K3-xNax (I) wherein x is in the range of from zero to 2.9.Type: ApplicationFiled: October 7, 2015Publication date: August 31, 2017Applicant: BASF SEInventors: Marta REINOSO GARCIA, Constanze FRANZKE, Armin STAMM
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Patent number: 8455682Abstract: Provided is a method for the production of aminodicarboxylic acid N,N-diacetic acids of formula (I), wherein X is independently hydrogen or an alkali metal and n is 1 or 2. Aminodicarboxylic acid-N,N-diacetic acids of high purity can be yielded. The method involves: a) reacting an aminodicarboxylic acid, with 0.8 to 1.2 mole equivalents of formaldehyde and with 0.8 to 1.2 mole equivalents of hydrocyanic acid; b) reacting the reaction products of a) with 0.8 to 1.2 mole equivalents of hydrocyanic acid and with 0.8 to 1.2 mole equivalents of formaldehyde; c) hydrolyzing in the reaction product obtained in b).Type: GrantFiled: March 2, 2009Date of Patent: June 4, 2013Assignee: BASF SEInventors: Alfred Oftring, Armin Stamm, Friedrich Wirsing, Gerold Braun
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Publication number: 20120184769Abstract: A method for isolating methylglycinenitrile-N,N-diacetonitrile (MGDN) from an aqueous mixture comprising MGDN is provided The method comprises cooling the aqueous mixture in one or more steps In one of these steps the mixture is cooled at a cooling rate of at least 20 K/h from a temperature above the solidification point of MGDN to a temperature below the solidification point of MGDN The method is implemented continuouslyType: ApplicationFiled: September 29, 2010Publication date: July 19, 2012Applicant: BASF SEInventors: Bernd Judat, Alfred Oftring, Armin Stamm, Friedhelm Teich
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Publication number: 20110004016Abstract: The present invention relates to a method for the production of aminodicarboxylic acid-N,N,diacetic acids of the general Formula I, wherein X independently of one another represents hydrogen or an alkali metal and n represents a number 1 or 2. Furthermore, the invention relates to aminodicarboxylic acid-N,N-diacetic acids of high purity. The inventive method comprises the following steps: A.) reacting an aminodicarboxylic acid of the general Formula II, wherein X and n have the aforementioned meanings, with 0.8 to 1.2 mole equivalents of formaldehyde and with 0.8 to 1.2 mole equivalents of hydrocyanic acid; b) reacting the reaction products of step a) with 0.8 to 1.2 mole equivalents of hydrocyanic acid and with 0.8 to 1.2 mole equivalents of formaldehyde; c) hydrolyzing in the reaction product obtained in step b).Type: ApplicationFiled: March 2, 2009Publication date: January 6, 2011Applicant: BASF SEInventors: Alfred Oftring, Armin Stamm, Friedrich Wirsing, Gerold Braun
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Patent number: 7671234Abstract: The invention relates to a process for preparing low-by-product, light-color methylglycine-N,N-diacetic acid tri(alkali metal) salt by alkaline hydrolysis of methylglycinediacetonitrile (MGDN), comprising the steps in the sequence (a) to (f): (a) mixing of MGDN with aqueous alkali at a temperature of ?30° C.; (b) allowing the aqueous alkaline MGDN suspension to react at a temperature in the range from 10 to 30° C. over a period of from 0.1 to 10 h to form a solution; (c) allowing the solution from step (b) to react at a temperature in the range from 30 to 40° C. over a period of from 0.1 to 10 h; (d) optionally allowing the solution from step (c) to react at a temperature in the range from 50 to 80° C. over a period of from 0.5 to 2 h; (e) optionally allowing the solution from step (c) or (d) to react at a temperature in the range from 110 to 200° C.Type: GrantFiled: May 2, 2006Date of Patent: March 2, 2010Assignee: BASF AktiengesellschaftInventors: Alfred Oftring, Gerold Braun, Friedrich Wirsing, Armin Stamm, Kai-Uwe Baldenius
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Patent number: 7482481Abstract: In a process for preparing isocyanates by reacting the corresponding primary amines with phosgene in an inert solvent, use is made of from 0.01 to 50 mol % of a phosphine oxide, based on the total amount of primary amine and isocyanate formed in the reaction solution.Type: GrantFiled: October 17, 2002Date of Patent: January 27, 2009Assignee: BASF AktiengesellschaftInventors: Thorsten Rohde, Armin Stamm, Jochem Henkelmann
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Publication number: 20080194873Abstract: The invention relates to a process for preparing low-by-product, light-color methylglycine-N,N-diacetic acid tri(alkali metal) salt by alkaline hydrolysis of methylglycinediacetonitrile (MGDN), comprising the steps in the sequence (a) to (f): (a) mixing of MGDN with aqueous alkali at a temperature of ?30° C.; (b) allowing the aqueous alkaline MGDN suspension to react at a temperature in the range from 10 to 30° C. over a period of from 0.1 to 10 h to form a solution; (c) allowing the solution from step (b) to react at a temperature in the range from 30 to 40° C. over a period of from 0.1 to 10 h; (d) optionally allowing the solution from step (c) to react at a temperature in the range from 50 to 80° C. over a period of from 0.5 to 2 h; (e) optionally allowing the solution from step (c) or (d) to react at a temperature in the range from 110 to 200° C.Type: ApplicationFiled: May 2, 2006Publication date: August 14, 2008Applicant: Basf AktiengesellschaftInventors: Alfred Oftring, Gerold Braun, Friedrich Wirsing, Armin Stamm, Kai-Uwe Baldenius
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Patent number: 7211689Abstract: In a process for preparing isocyanates by reacting the corresponding primary amines with phosgene in an inert solvent, use is made of from 0.01 to 50 mol % of a sulfonamide, based on the total amount of primary amine and isocyanate formed in the reaction solution.Type: GrantFiled: October 17, 2002Date of Patent: May 1, 2007Assignee: BASF AktiengesellschaftInventors: Thorsten Rohde, Armin Stamm, Jochem Henkelmann