Patents by Inventor Peter Frenkel

Peter Frenkel 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).

  • Heteropolyacids as catalysts for a synthesis of ketone peroxides
    Patent number: 6054625
    Abstract: The process of preparing geminal dihydroperoxy alkyl peroxides and 1,1-dihydroperoxydialkyl peroxides, which comprises reacting an aqueous composition comprising a ketone with hydrogen peroxide in the presence of a heteropolyacid.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: April 25, 2000
    Assignee: Witco Corporation
    Inventors: Peter Frenkel, Delphine Nwoko, Ted M. Pettijohn
  • Heteropoly acid peroxide promoter
    Patent number: 6001767
    Abstract: The invention disclosed involves the use of heteropoly acids as promoters to decompose organic peroxides.
    Type: Grant
    Filed: August 4, 1997
    Date of Patent: December 14, 1999
    Assignee: Witco Corporation
    Inventors: Peter Frenkel, Ted M. Pettijohn
  • Organic peroxide stabilization with oximes
    Patent number: 5892090
    Abstract: Peroxydicarbonate compounds are stabilized against decomposition by the presence of an effective amount of one or more oximes of the general formula ##STR1## wherein R.sup.A and R.sup.B are optionally substituted alkyl or alkenyl of up to 22 carbon atoms or phenyl, or form a C.sub.4 -C.sub.8 cycloalkyl ring.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: April 6, 1999
    Assignee: Witco Corporation
    Inventor: Peter Frenkel
  • Organic peroxide stabilization with phosphomolybdic acid
    Patent number: 5719304
    Abstract: Organic peroxide compositions which contain phosphomolybdic acid to retard the rate of decomposition of the peroxide compound are disclosed.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: February 17, 1998
    Assignee: Witco Corporation
    Inventors: Peter Frenkel, Charles Abma
  • Organic peroxide stabilization with .beta.-dicarbonyl compounds
    Patent number: 5714626
    Abstract: Organic peroxide compositions which contain a .beta.-dicarbonyl compound to retard the rate of decomposition of the peroxide compound are disclosed.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: February 3, 1998
    Assignee: Witco Corporation
    Inventors: Charles Abma, Peter Frenkel, Lawrence Bock, Anthony Andrews, Michael Wells
  • Inhibition of discoloration of cumene hydroperoxide
    Patent number: 5705708
    Abstract: Discoloration of cumene hydroperoxide is reduced or inhibited by adding to the cumene hydroperoxide an effective amount on the order of 30 to 1000 ppm of a stabilizer of the formula R'C(O)OM wherein R' is alkyl, alkenyl, cycloalkyl or aryl containing 1-40 carbon atoms, or the formula R.sub.4 NOH wherein each R is independently alkyl or cycloalkyl containing 1-40 carbon atoms.
    Type: Grant
    Filed: September 23, 1996
    Date of Patent: January 6, 1998
    Assignee: Witco Corporation
    Inventor: Peter Frenkel
  • Organic peroxide stabilization with .alpha.-hydroxyalkyl peroxides
    Patent number: 5654463
    Abstract: Organic peroxide compositions which contain an .alpha.-hydroxyalkyl peroxide compound to retard the rate of decomposition of the peroxide compound are disclosed.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: August 5, 1997
    Assignee: Witco Corporation
    Inventors: Charles Abma, Peter Frenkel
  • Organic peroxide stabilization with cyclic .alpha.-diketone compounds
    Patent number: 5654464
    Abstract: Organic peroxide compositions which contain a cyclic .alpha.-diketone compound to retard the rate of decomposition of the peroxide compound are disclosed.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: August 5, 1997
    Assignee: Witco Corporation
    Inventors: Charles Abma, Peter Frenkel, Lawrence Bock