Patents by Inventor John Hirsh

John Hirsh 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
  • 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