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).

  • Patent number: 11028350
    Abstract: 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: Grant
    Filed: June 1, 2017
    Date of Patent: June 8, 2021
    Assignee: BASF SE
    Inventors: Michael Klemens Mueller, Armin Stamm, Frank Jaekel, Carsten Sueling
  • Publication number: 20210162839
    Abstract: 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: Application
    Filed: December 11, 2020
    Publication date: June 3, 2021
    Applicant: Rheinmetall Landsysteme GmbH
    Inventors: Armin STAMM, Eckhard SCHWARTZ
  • Publication number: 20210094902
    Abstract: 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: Application
    Filed: June 19, 2018
    Publication date: April 1, 2021
    Inventors: Thomas SCHMIDT, Armin STAMM, Marta REINOSO GARCIA, Verena MORMUL, Michael Klemens MUELLER, Frank JAEKEL, Jeremy T. MANNING
  • Publication number: 20200062695
    Abstract: 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: Application
    Filed: October 28, 2019
    Publication date: February 27, 2020
    Applicant: BASF SE
    Inventors: Armin STAMM, Thomas Schmidt, Christopher Orr, Jeremy Manning
  • Patent number: 10519097
    Abstract: 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: Grant
    Filed: May 3, 2016
    Date of Patent: December 31, 2019
    Assignee: BASF SE
    Inventors: Armin Stamm, Thomas Schmidt, Christopher Orr, Jeremy Manning
  • Patent number: 10421711
    Abstract: 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: Grant
    Filed: December 7, 2016
    Date of Patent: September 24, 2019
    Assignee: BASF SE
    Inventors: Constanze Franzke, Axel Franzke, Armin Stamm, Markus Hartmann, Robert Baumann
  • Publication number: 20190119611
    Abstract: 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: Application
    Filed: June 1, 2017
    Publication date: April 25, 2019
    Applicant: BASF SE
    Inventors: Michael Klemens MUELLER, Armin STAMM, Frank JAEKEL, Carsten SUELING
  • Publication number: 20180354891
    Abstract: 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: Application
    Filed: December 7, 2016
    Publication date: December 13, 2018
    Applicant: BASF SE
    Inventors: Constanze FRANZKE, Axel FRANZKE, Armin STAMM, Markus HARTMANN, Robert BAUMANN
  • Publication number: 20180105486
    Abstract: 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: Application
    Filed: May 3, 2016
    Publication date: April 19, 2018
    Applicant: BASF SE
    Inventors: Armin STAMM, Thomas SCHMIDT, Christopher ORR, Jeremy MANNING
  • Patent number: 9873659
    Abstract: 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: Grant
    Filed: October 7, 2015
    Date of Patent: January 23, 2018
    Assignee: BASF SE
    Inventors: Marta Reinoso Garcia, Constanze Franzke, Armin Stamm
  • Publication number: 20170247318
    Abstract: 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: Application
    Filed: October 7, 2015
    Publication date: August 31, 2017
    Applicant: BASF SE
    Inventors: Marta REINOSO GARCIA, Constanze FRANZKE, Armin STAMM
  • Patent number: 8455682
    Abstract: 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: Grant
    Filed: March 2, 2009
    Date of Patent: June 4, 2013
    Assignee: BASF SE
    Inventors: Alfred Oftring, Armin Stamm, Friedrich Wirsing, Gerold Braun
  • Publication number: 20120184769
    Abstract: 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 continuously
    Type: Application
    Filed: September 29, 2010
    Publication date: July 19, 2012
    Applicant: BASF SE
    Inventors: Bernd Judat, Alfred Oftring, Armin Stamm, Friedhelm Teich
  • Publication number: 20110004016
    Abstract: 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: Application
    Filed: March 2, 2009
    Publication date: January 6, 2011
    Applicant: BASF SE
    Inventors: Alfred Oftring, Armin Stamm, Friedrich Wirsing, Gerold Braun
  • Patent number: 7671234
    Abstract: 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: Grant
    Filed: May 2, 2006
    Date of Patent: March 2, 2010
    Assignee: BASF Aktiengesellschaft
    Inventors: Alfred Oftring, Gerold Braun, Friedrich Wirsing, Armin Stamm, Kai-Uwe Baldenius
  • Patent number: 7482481
    Abstract: 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: Grant
    Filed: October 17, 2002
    Date of Patent: January 27, 2009
    Assignee: BASF Aktiengesellschaft
    Inventors: Thorsten Rohde, Armin Stamm, Jochem Henkelmann
  • Publication number: 20080194873
    Abstract: 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: Application
    Filed: May 2, 2006
    Publication date: August 14, 2008
    Applicant: Basf Aktiengesellschaft
    Inventors: Alfred Oftring, Gerold Braun, Friedrich Wirsing, Armin Stamm, Kai-Uwe Baldenius
  • Patent number: 7211689
    Abstract: 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: Grant
    Filed: October 17, 2002
    Date of Patent: May 1, 2007
    Assignee: BASF Aktiengesellschaft
    Inventors: Thorsten Rohde, Armin Stamm, Jochem Henkelmann
  • Patent number: 7078574
    Abstract: A method is provided for the intrinsically safe handling of 3-chloropropyne in the presence of a diluent with a boiling point ranging from ?50° C. (223 K) to 200° C. (473 K) under atmospheric pressure, wherein the concentration of 3-chloropropyne in the liquid phase and in the gas phase is kept below the concentrations capable of deflagration by means of the type and amount of the diluent, the temperature and the total system pressure, together with the use of a 3-chloropropyne prepared, stored or transported in this way in the synthesis of dyestuffs, pharmaceutical and agricultural active ingredients, electroplating auxiliaries, disinfectants, steroids and growth hormones.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: July 18, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Armin Stamm, Heinz-Josef Kneuper, Stefan Rittinger, Peter Dransfeld, Hans-Peter Schildberg, Manfred Heilig, Theodor Weber
  • Patent number: 7064233
    Abstract: 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 sulfoxide, a sulfone or a mixture thereof, based on the total amount of primary amine and isocyanate formed in the reaction solution.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: June 20, 2006
    Assignee: BASF Aktiengesellschaft
    Inventors: Thorsten Rohde, Armin Stamm, Jochem Henkelmann