Patents by Inventor Klaus Gottmann

Klaus Gottmann 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: 9688601
    Abstract: Process for preparing (meth)acrylates of the formula (I) CH2?C(R1)—CO—O—R2??(I) in which R1 is hydrogen or methyl and R2 is a saturated or unsaturated, linear or branched, aliphatic or cyclic alkyl radical having 6 to 22 carbon atoms, or a (C6-C14)-aryl-(C1-C8)-alkyl radical; by reacting a (meth)acrylate of the formula II CH2?C(R1)—CO—OR3??(II) with an alcohol of the formula (III) HO—R2??(III) in the presence of an amount of a suitable catalyst which catalyzes the reaction and of an amount of a phenolic polymerization inhibitor or a combination of two or more phenolic polymerization inhibitors which is sufficient to inhibit undesired polymerization; the reaction being undertaken with input or introduction into the reaction mixture resulting from the reaction of an amount of oxygen or of an oxygenous gas mixture sufficient to inhibit undesired polymerization, and the process is characterized in that the specific total oxygen input is less than or equal to 1.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: June 27, 2017
    Assignee: Evonik Roehm GmbH
    Inventors: Joachim Knebel, Ralf Merbach, Guido Protzmann, Klaus Gottmann, John Hirsh, Gerold Schmitt, Dieter Tessmer, Wilhelm Karnbrock, Wolfgang Klesse, Volker Kerscher
  • Publication number: 20160046556
    Abstract: Process for preparing (meth)acrylates of the formula (I) CH2?C(R1)—CO—O—R2 ??(I) in which R1 is hydrogen or methyl and R2 is a saturated or unsaturated, linear or branched, aliphatic or cyclic alkyl radical having 6 to 22 carbon atoms, or a (C6-C14)-aryl-(C1-C8)-alkyl radical; by reacting a (meth)acrylate of the formula II CH2?C(R1)—CO—OR3 ??(II) with an alcohol of the formula (III) HO—R2 ??(III) in the presence of an amount of a suitable catalyst which catalyses the reaction and of an amount of a phenolic polymerization inhibitor or a combination of two or more phenolic polymerization inhibitors which is sufficient to inhibit undesired polymerization; the reaction being undertaken with input or introduction into the reaction mixture resulting from the reaction of an amount of oxygen or of an oxygenous gas mixture sufficient to inhibit undesired polymerization, and the process is characterized in that the specific total oxygen input is less than or equal to 1.
    Type: Application
    Filed: October 27, 2015
    Publication date: February 18, 2016
    Applicant: Evonik Roehm GmbH
    Inventors: Joachim KNEBEL, Ralf MERBACH, Guido PROTZMANN, Klaus GOTTMANN, John HIRSH, Gerold SCHMITT, Dieter TESSMER, Wilhelm KARNBROCK, Wolfgang KLESSE, Volker KERSCHER
  • Patent number: 9206270
    Abstract: Process for preparing (meth)acrylates of the formula (I) CH2?C(R1)—CO—O—R2??(I) in which R1 is hydrogen or methyl and R2 is a saturated or unsaturated, linear or branched, aliphatic or cyclic alkyl radical having 6 to 22 carbon atoms, or a (C6-C14)-aryl-(C1-C8)-alkyl radical; by reacting a (meth)acrylate of the formula II CH2?C(R1)—CO—OR3??(II) with an alcohol of the formula (III) HO—R2??(III) in the presence of an amount of a suitable catalyst which catalyzes the reaction and of an amount of a phenolic polymerization inhibitor or a combination of two or more phenolic polymerization inhibitors which is sufficient to inhibit undesired polymerization; the reaction being undertaken with input or introduction into the reaction mixture resulting from the reaction of an amount of oxygen or of an oxygenous gas mixture sufficient to inhibit undesired polymerization, and the process is characterized in that the specific total oxygen input is less than or equal to 1.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: December 8, 2015
    Assignee: Evonik Roehm GmbH
    Inventors: Joachim Knebel, Ralf Merbach, Guido Protzmann, Klaus Gottmann, John Hirsh, Gerold Schmitt, Dieter Tessmer, Wilhelm Karnbrock, Wolfgang Klesse, Volker Kerscher
  • Patent number: 8129563
    Abstract: The present invention relates to a process for preparing allyl methacrylate, comprising the reaction of allyl alcohol with an ester of methacrylic acid, wherein the reaction is catalyzed by zirconium acetylacetonate. The process according to the invention enables particularly favorable preparation of allyl methacrylate with a very high purity.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: March 6, 2012
    Assignee: Evonik Roehm GmbH
    Inventors: Bardo Schmitt, Guido Protzmann, Thorben Schuetz, Harald Trauthwein, Reinhold Martin, Joachim Knebel, Ingo Sander, Klaus Gottmann, Thomas Kehr, Dieter Bathen, Christian Maul
  • Publication number: 20100280205
    Abstract: Process for preparing (meth)acrylates of the formula (I) CH2?C(R1)—CO—O—R2 ??(I) in which R1 is hydrogen or methyl and R2 is a saturated or unsaturated, linear or branched, aliphatic or cyclic alkyl radical having 6 to 22 carbon atoms, or a (C6-C14)-aryl-(C1-C8)-alkyl radical; by reacting a (meth)acrylate of the formula II CH2?C(R1)—CO—OR3 ??(II) with an alcohol of the formula (III) HO—R2 ??(III) in the presence of an amount of a suitable catalyst which catalyses the reaction and of an amount of a phenolic polymerization inhibitor or a combination of two or more phenolic polymerization inhibitors which is sufficient to inhibit undesired polymerization; the reaction being undertaken with input or introduction into the reaction mixture resulting from the reaction of an amount of oxygen or of an oxygenous gas mixture sufficient to inhibit undesired polymerization, and the process is characterized in that the specific total oxygen input is less than or equal to 1.
    Type: Application
    Filed: September 29, 2008
    Publication date: November 4, 2010
    Applicant: Evonik Roehm GmbH
    Inventors: Joachim Knebel, Ralf Merbach, Guido Protzmann, Klaus Gottmann, John Hirsh, Gerold Schmitt, Dieter Tessmer, Wilhelm Karnbrock, Wolfgang Klesse, Volker Kerscher
  • Publication number: 20100185009
    Abstract: The present invention relates to a process for preparing allyl methacrylate, comprising the reaction of allyl alcohol with an ester of methacrylic acid, wherein the reaction is catalysed by zirconium acetylacetonate. The process according to the invention enables particularly favourable preparation of allyl methacrylate with a very high purity.
    Type: Application
    Filed: May 8, 2008
    Publication date: July 22, 2010
    Applicant: Evonik Roehm GmbH
    Inventors: Bardo Schmitt, Guido Protzmann, Thorben Schuetz, Harald Trauthwein, Reinhold Martin, Joachim Knebel, Ingo Sander, Klaus Gottmann, Thomas Kehr, Dieter Bathen, Christian Maul
  • Patent number: 5849946
    Abstract: The invention relates to a method of obtaining water-free 2-trimethylammoniumethyl methacrylate chloride (TMAC) characterized in that an aqueous TMAC solution is subjected to the following operations:(a) Azeotropic removal using an alkyl (meth)acrylate; and(b) Filtration of the resulting suspension.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: December 15, 1998
    Assignee: Roehm GmbH Chemische Fabrik
    Inventors: Peter-Joseph Arndt, Werner Ude, Klaus Gottmann, Thomas Kehr
  • Patent number: 5279839
    Abstract: Transglutaminase, when added to flours or baking agents, preferable in combination with a protease or ascorbic acid, improves the resistance of dough to stretching, particularly of yeast doughs made from wheat flour.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: January 18, 1994
    Assignee: Rohm GmbH
    Inventors: Klaus Gottmann, Bruno Sproessler