Patents by Inventor Hans-Joachim Hasselbach

Hans-Joachim Hasselbach 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: 10683240
    Abstract: The present invention relates to a process for producing a particulate composition containing methionine, methionylmethionine, potassium in the form of potassium salt and ammonium sulfate, and use thereof.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: June 16, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Harald Jakob, Hans Joachim Hasselbach, Dominik Egly, Waldemar Hessberger
  • Publication number: 20200115334
    Abstract: The present invention relates to a method for preparing methionine or methionine salts. In particular, the invention describes the step of preparing 2-hydroxy-4-(methylthio)butyronitrile (MMP-CN) from 3-methylthiopropanal (MMP) and hydrogen cyanide (HCN) in the presence of ammonia by bringing a gaseous mixture comprising HCN and ammonia into contact with MMP.
    Type: Application
    Filed: December 15, 2017
    Publication date: April 16, 2020
    Applicant: Evonik Degussa GmbH
    Inventors: Judith HIEROLD, Daniel SUDHOFF, Martin STEURENTHALER, Hans Joachim HASSELBACH, Philipp ROTH, Thorsten MERKER, Markus HELD, Daniel FISCHER, Christian KAISER
  • Publication number: 20200039928
    Abstract: A process for preparing methionine includes the alkaline hydrolysis of 5-(2-methylmercaptoethyl)-hydantoin (methionine hydantoin) in an aqueous process solution containing alkali metal hydroxide and/or alkali metal carbonate and/or alkali metal hydrogencarbonate. The alkali metal cations in the process solution are potassium and sodium having a K/Na molar ratio range from 99/1 to 20/80.
    Type: Application
    Filed: May 8, 2018
    Publication date: February 6, 2020
    Applicant: Evonik Operations GmbH
    Inventors: Sebastian Bernhardt, Martin Körfer, Stefan Reichert, Hans-Joachim Hasselbach, Bernd Drapal, Rainer Peter, Christian Kaiser, Benny Hartono, Harald Jakob
  • Publication number: 20190322600
    Abstract: The present invention relates to a process for producing a particulate composition containing methionine, methionylmethionine, potassium in the form of potassium salt and ammonium sulphate, and use thereof.
    Type: Application
    Filed: June 27, 2017
    Publication date: October 24, 2019
    Applicant: Evonik Degussa GmbH
    Inventors: Martin KOERFER, Hans Joachim HASSELBACH, Gerit NIGGEMANN, Antje HANSMEIER, Hans Christian ALT, Dominik EGLY, Peter SCHULTE
  • Publication number: 20190135708
    Abstract: The present invention relates to a process for producing a particulate composition containing methionine, methionylmethionine, potassium in the form of potassium salt and ammonium sulfate, and use thereof.
    Type: Application
    Filed: October 1, 2018
    Publication date: May 9, 2019
    Applicant: Evonik Degussa GmbH
    Inventors: Harald JAKOB, Hans Joachim Hasselbach, Dominik Egly, Waldemar Hessberger
  • Publication number: 20180194804
    Abstract: The invention relates to a process for preparing 2,6-bis(methionyl)-1,4-dketopiperazine, comprising the following steps: a) heating a reaction mixture comprising methionine and polar protic solvent at a temperature of less than 170.0° C., while passing an inert gas stream over or through the reaction mixture; b) obtaining 2,6-bis(methionyl)-1,4-diketopiperazine.
    Type: Application
    Filed: June 28, 2016
    Publication date: July 12, 2018
    Applicant: Evonik Degussa GmbH
    Inventors: Sascha BRAUNE, Daniel ROST, Juergen BILZ, Thomas HAEUSSNER, Hans Joachim Hasselbach, Christoph KOBLER
  • Patent number: 9617209
    Abstract: The invention relates to a method for crystallizing D,L-methionine from aqueous solutions and/or suspensions containing D,L-methionine and D,L-methionine ammonium salts, having a Met content of 70-180 g/kg, an NH4+ content of 1-5 g/kg, in the presence of a crystallization additive, which comprises a nonionic or anionic surfactant or a mixture of various nonionic or anionic surfactants, in which the temperature of the solution and/or suspension is lowered directly or stepwise from T1=85-110° C. to T2=30-50° C., so that D,L-methionine precipitates as a solid.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: April 11, 2017
    Assignee: EVONIK DEGUSSA GmbH
    Inventors: Stefan Reichert, Harald Jakob, Hans Joachim Hasselbach, Martin Koerfer
  • Patent number: 9464045
    Abstract: This disclosure relates to a process for preparing D,L-methionine by feeding carbon dioxide to an aqueous potassium methioninate solution obtained by hydrolysis of 5-(2-methylmercaptoethyl)hydantoin, in order to precipitate out crude methionine, which is separated off and purified. In this process an aqueous solution of the separated-off crude methionine is purified by recrystallization from a solution containing potassium ions and also a crystallization additive. The crystallization additive is a nonionic or anionic surfactant, or a mixture of different nonionic or anionic surfactants. The recrystallization occurs by introducing a 60 to 110° C.-hot methionine solution into a 35 to 80° C.-warm methionine suspension, a temperature of which is lower than that of the introduced solution, such that the temperature of the methionine suspension being maintained between 35 and 80° C. during the addition. The crystallization additive is a sorbitan fatty acid ester or a mixture of different sorbitan fatty acid esters.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: October 11, 2016
    Assignee: EVONIK DEGUSSA GmbH
    Inventors: Martin Koerfer, Hans Joachim Hasselbach, Stefan Reichert, Harald Jakob, Christoph Weckbecker, Klaus Huthmacher, Horst Krull, Bernd Drapal, Rainer Peter
  • Publication number: 20160229799
    Abstract: The invention relates to a method for crystallizing D,L-methionine from aqueous solutions and/or suspensions containing D,L-methionine and D,L-methionine ammonium salts, having a Met content of 70-180 g/kg, an NH4+ content of 1-5 g/kg, in the presence of a crystallization additive, which comprises a nonionic or anionic surfactant or a mixture of various nonionic or anionic surfactants, in which the temperature of the solution and/or suspension is lowered directly or stepwise from T1=85-110° C. to T2=30-50° C., so that D,L-methionine precipitates as a solid.
    Type: Application
    Filed: September 10, 2014
    Publication date: August 11, 2016
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Stefan REICHERT, Harald JAKOB, Hans Joachim HASSELBACH, Martin KÖRFER
  • Patent number: 9403764
    Abstract: A method for production of a methionine salt in a reactive rectification column containing a weir having a height of 100 mm or more is provided.
    Type: Grant
    Filed: March 4, 2015
    Date of Patent: August 2, 2016
    Assignee: EVONIK DEGUSSA GmbH
    Inventors: Hans Joachim Hasselbach, Martin Koerfer, Christof P. Gruener, Franz H. Hanrath, Juergen Stock, Jignesh Gangadwala, Horst Krull
  • Publication number: 20160068480
    Abstract: This disclosure relates to a process for preparing D,L-methionine by feeding carbon dioxide to an aqueous potassium methioninate solution obtained by hydrolysis of 5-(2-methylmercaptoethyl)hydantoin, in order to precipitate out crude methionine, which is separated off and purified. In this process an aqueous solution of the separated-off crude methionine is purified by recrystallization from a solution containing potassium ions and also a crystallization additive. The crystallization additive is a nonionic or anionic surfactant, or a mixture of different nonionic or anionic surfactants. The recrystallization occurs by introducing a 60 to 110° C.-hot methionine solution into a 35 to 80° C.-warm methionine suspension, a temperature of which is lower than that of the introduced solution, such that the temperature of the methionine suspension being maintained between 35 and 80° C. during the addition. The crystallization additive is a sorbitan fatty acid ester or a mixture of different sorbitan fatty acid esters.
    Type: Application
    Filed: September 10, 2015
    Publication date: March 10, 2016
    Applicant: EVONIK INDUSTRIES AG
    Inventors: Martin KOERFER, Hans Joachim HASSELBACH, Stefan REICHERT, Harald JAKOB, Christoph WECKBECKER, Klaus HUTHMACHER, Horst KRULL, Bernd DRAPAL, Rainer PETER
  • Patent number: 9206121
    Abstract: A method to produce D,L-Methionine from 2-hydroxy-4-(methylthio)butyronitrile by reaction with ammonia, optionally in the presence of carbon dioxide, is provided. The 2-hydroxy-4-(methylthio)butyronitrile is obtained by reaction of 3-methylmercaptopropionaldehyde with hydrogen cyanide in the presence of a base as catalyst in a main reaction zone of a multizone reactor. Residual gaseous hydrogen cyanide is removed from the main reaction zone to an absorption and post-reaction zone of the reactor which comprises a mixture of 3-methylmercaptopropionaldehyde and the catalyst; and the gaseous hydrogen cyanide is further reacted with the 3-methylmercaptopropionaldehyde in the absorption and post reaction zone. A molar ratio of hydrogen cyanide to 3-(methylthio)propanal in the main reaction zone is from 0.98 to 1.03.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: December 8, 2015
    Assignee: EVONIK DEGUSSA GmbH
    Inventors: Dieter Buss, Martin Steurenthaler, Michael R. Rinner, Stephan Kretz, Hans Joachim Hasselbach, Caspar-Heinrich Finkeldei, Martin Koerfer, Pablo Zacchi
  • Patent number: 9156782
    Abstract: The invention relates to a process for the preparation of D,L-methionine, in which carbon dioxide is fed to an aqueous potassium methioninate solution obtained by hydrolysis of 5-(2-methylmercaptoethyl)hydantoin, in order to precipitate out crude methionine, which is separated off and purified, where, for the purposes of purification, an aqueous solution of the separated-off crude methionine is prepared and subjected to a recrystallization, characterized in that the solution from which the recrystallization takes place contains potassium ions and also a crystallization additive, where the crystallization additive is a nonionic or anionic surfactant, or a mixture of different nonionic or anionic surfactants, and that the recrystallization takes place by introducing a 60 to 110° C.-hot methionine solution into a 35 to 80° C.-warm methionine suspension, the temperature of which is lower than that of the introduced solution, the temperature of the methionine suspension being maintained between 35 and 80° C.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: October 13, 2015
    Assignee: EVONIK INDUSTRIES AG
    Inventors: Martin Koerfer, Hans Joachim Hasselbach, Stefan Reichert, Harald Jakob, Christoph Weckbecker, Klaus Huthmacher, Horst Krull, Bernd Drapal, Rainer Peter
  • Patent number: 9133113
    Abstract: A method for the production of 2-hydroxy-4-methylthiobutyric acid by hydrolysis of 2-hydroxy-4-(methylthio)butyronitrile is provided. 3-Methylmercaptopropionaldehyde is reacted with hydrogen cyanide in the presence of a base as catalyst in a main reaction zone of the multizone reactor to form a reaction mixture comprising the 2-hydroxy-4-(methylthio)butyronitrile, unreacted 3-methylmercaptopropionaldehyde, the catalyst and residual amounts of gaseous hydrogen cyanide. The residual gaseous hydrogen cyanide is removed from the main reaction zone to an absorption and post-reaction zone of the reactor which comprises a mixture of 3-methylmercaptopropionaldehyde and the catalyst; and the gaseous hydrogen cyanide is further reacted with the 3-methylmercaptopropionaldehyde in the absorption and post reaction zone. A molar ratio of hydrogen cyanide to 3-(methylthio)propanal in the main reaction zone is from 0.98 to 1.03.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: September 15, 2015
    Assignee: EVONIK DEGUSSA GmbH
    Inventors: Dieter Buss, Martin Steurenthaler, Michael R. Rinner, Stephan Kretz, Hans Joachim Hasselbach, Caspar-Heinrich Finkeldei, Martin Koerfer, Pablo Zacchi
  • Publication number: 20150197489
    Abstract: A method to produce D,L-Methionine from 2-hydroxy-4-(methylthio)butyronitrile by reaction with ammonia, optionally in the presence of carbon dioxide, is provided. The 2-hydroxy-4-(methylthio)butyronitrile is obtained by reaction of 3-methylmercapto-propionaldehyde with hydrogen cyanide in the presence of a base as catalyst in a main reaction zone of a multizone reactor. Residual gaseous hydrogen cyanide is removed from the main reaction zone to an absorption and post-reaction zone of the reactor which comprises a mixture of 3-methylmercaptopropionaldehyde and the catalyst; and the gaseous hydrogen cyanide is further reacted with the 3-methylmercaptopropionaldehyde in the absorption and post reaction zone. A molar ratio of hydrogen cyanide to 3-(methylthio)propanal in the main reaction zone is from 0.98 to 1.03.
    Type: Application
    Filed: March 27, 2015
    Publication date: July 16, 2015
    Applicant: Evonik Degussa GmbH
    Inventors: Dieter Buss, Martin Steurenthaler, Michael R. Rinner, Stephan Kretz, Hans Joachim Hasselbach, Caspar-Heinrich Finkeldei, Martin Koerfer, Pablo Zacchi
  • Publication number: 20150175535
    Abstract: A method for production of a methionine salt in a reactive rectification column containing a weir having a height of 100 mm or more is provided.
    Type: Application
    Filed: March 4, 2015
    Publication date: June 25, 2015
    Applicant: Evonik Degussa GmbH
    Inventors: Hans Joachim HASSELBACH, Martin Koerfer, Christof P. Gruener, Franz H. Hanrath, Juergen Stock, Jignesh Gangadwala, Horst Krull
  • Patent number: 9029597
    Abstract: A reactive rectification column suitable for the production of 2-hydroxy-4-methylmercaptobutyric acid and/or methionine contains a weir having a height of 100 mm or more.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: May 12, 2015
    Assignee: Evonik Degussa GmbH
    Inventors: Martin Steffan, Hans Joachim Hasselbach, Martin Koerfer, Harald Jakob, Jignesh Gangadwala
  • Patent number: 9023284
    Abstract: A reaction system suitable for production of a methionine salt contains a reactive rectification column containing a weir having a height of 100 mm or more.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: May 5, 2015
    Assignee: Evonik Degussa GmbH
    Inventors: Hans Joachim Hasselbach, Martin Koerfer, Christof P. Gruener, Franz H. Hanrath, Juergen Stock, Jignesh Gangadwala, Horst Krull
  • Publication number: 20150051421
    Abstract: The invention relates to a process for the preparation of D,L-methionine, in which carbon dioxide is fed to an aqueous potassium methioninate solution obtained by hydrolysis of 5-(2-methylmercaptoethyl)hydantoin, in order to precipitate out crude methionine, which is separated off and purified, where, for the purposes of purification, an aqueous solution of the separated-off crude methionine is prepared and subjected to a recrystallization, characterized in that the solution from which the recrystallization takes place contains potassium ions and also a crystallization additive, where the crystallization additive is a nonionic or anionic surfactant, or a mixture of different nonionic or anionic surfactants, and that the recrystallization takes place by introducing a 60 to 110° C.-hot methionine solution into a 35 to 80° C.-warm methionine suspension, the temperature of which is lower than that of the introduced solution, the temperature of the methionine suspension being maintained between 35 and 80° C.
    Type: Application
    Filed: February 26, 2013
    Publication date: February 19, 2015
    Applicant: EVONIK INDUSTRIES AG
    Inventors: Martin Koerfer, Hans Joachim Hasselbach, Stefan Reichert, Harald Jakob, Christoph Weckbecker, Klaus Huthmacher, Horst Krull, Bernd Drapal, Rainer Peter
  • Publication number: 20140213819
    Abstract: A method for the production of 2-hydroxy-4-(methylthio)butyronitrile having good storage stability in a multi-zone reactor, is provided. 3-methylmercaptopropionaldehyde is reacted with hydrogen cyanide in the presence of a base as catalyst in a main reaction zone of the multizone reactor to form a reaction mixture comprising the 2-hydroxy-4-(methylthio)butyronitrile, unreacted 3-methylmercaptopropionaldehyde, the catalyst and residual amounts of gaseous hydrogen cyanide. The residual gaseous hydrogen cyanide is removed from the main reaction zone to an absorption and post-reaction zone of the reactor which comprises a mixture of 3-methylmercaptopropionaldehyde and the catalyst; and the gaseous hydrogen cyanide is further reacted with the 3-methylmercaptopropionaldehyde in the absorption and post reaction zone. A molar ratio of hydrogen cyanide to 3-(methylthio)propanal in the main reaction zone is from 0.98 to 1.03.
    Type: Application
    Filed: March 27, 2014
    Publication date: July 31, 2014
    Applicant: EVONIK DEGUSSA GmbH
    Inventors: Dieter BUSS, Martin STEURENTHALER, Michael R. RINNER, Stephan KRETZ, Hans Joachim HASSELBACH, Caspar-Heinrich FINKELDEI, Martin KOERFER, Pablo ZACCHI