Patents by Inventor Vladimir I. Sobolev

Vladimir I. Sobolev 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).

  • Process for making phenol or phenol derivatives
    Patent number: 6156938
    Abstract: A process for hydroxylating an aromatic compound comprises the steps of: (a) contacting an aromatic compound with a catalyst having an average concentration of .alpha.-sites of at least about 1.multidot.10.sup.16 per gram of catalyst, the catalyst having .alpha.-oxygen loaded thereon, whereby an hydroxylated derivative of the aromatic compound is produced; and (b) regenerating the catalyst when the concentration of .alpha.-sites falls below a predetermined value. The predetermined value will depend on the process design, but can suitably be about 1.multidot.10.sup.16 per gram of catalyst or higher.Another embodiment of the process comprises: (a) contacting an aromatic compound with a catalyst having an average concentration of .alpha.-sites of at least about 1.multidot.10.sup.16 per gram of catalyst, the catalyst having .alpha.-oxygen loaded thereon, whereby an hydroxylated derivative of the aromatic compound is produced; and (b) reloading the catalyst with .alpha.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: December 5, 2000
    Assignee: Solutia, Inc.
    Inventors: Vladimir I. Sobolev, Mikhail A. Rodkin, Anthony K. Uriarte, Gennady I. Panov
  • Preparation of phenol or phenol derivatives
    Patent number: 5110995
    Abstract: The invention relates to a process for the production of phenol or phenol derivatives by oxidation of the aromatic nucleus of benzene or benzene derivatives with nitrous oxide over a zeolite catalyst.
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: May 5, 1992
    Assignee: Institute of Catalysis
    Inventors: Alexandr S. Kharitonov, Gennadii I. Panov, Kazimira G. Ione, Vyacheslav N. Romannikov, Galina A. Sheveleva, Lidia A. Vostrikova, Vladimir I. Sobolev