Patents by Inventor Michael DEMMING

Michael DEMMING 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).

  • 2-(3-(AMINOMETHYL)-3,5,5-TRIMETHYLCYCLOHEXYL)PROPANE-1,3-DIAMINE, A PROCESS FOR ITS PRODUCTION AND USE
    Publication number: 20190106377
    Abstract: A compound of the structural formula 1 Also disclosed is a process for producing 2-(3-(aminomethyl)-3,5,5-trimethylcyclohexyl)propane-1,3-diamine by A) reacting isophorone nitrile and malononitrile to afford the intermediate 2-(3-cyano-3,5,5-trimethylcyclohexylidene) malononitrile, and B) hydrogenating 2-(3-cyano-3,5,5-trimethylcyclohexylidene)malononitrile in the presence of at least one catalyst. In another embodiment, the hydrogenation in step B) of the process is performed at 20-120° C. and at 20-300 bar.
    Type: Application
    Filed: November 1, 2018
    Publication date: April 11, 2019
    Applicant: Evonik Degussa GmbH
    Inventors: Alexander Martin RÜFER, Anne RITTSTEIGER, Jörg-Joachim NITZ, Stephan KOHLSTRUK, Martina ORTELT, Dirk FUCHSMANN, Michael DEMMING, Christine STEMMER, Denise OTT, Anja Poschen
  • HYDROLYSIS OF THE RESIDUES OBTAINED IN THE PRODUCTION OF ISOPHORONE TO RECOVER ISOPHORONE AND ACETONE
    Publication number: 20150045585
    Abstract: A process for preparing isophorone (3,5,5-trimethyl-2-cyclohexen-1-one) is provided wherein distillation vapors from the work-up of product fractions are recycled to earlier stages of operation of the process.
    Type: Application
    Filed: August 8, 2014
    Publication date: February 12, 2015
    Applicant: Evonik Industries AG
    Inventors: Joerg-Joachim NITZ, Stephan KOHLSTRUK, Robert JANSEN, Matthias ORSCHEL, Andreas MERKEL, Michael DEMMING, Matthias MENDORF, Jens DOERING, Axel HENGSTERMANN, Andreas HOFF, Anja MUELLER