Patents by Inventor Donald B. Halcom

Donald B. Halcom 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).

  • Suppression of aging for Pd-Au vinyl acetate monomer catalyst
    Patent number: 6156927
    Abstract: One aspect of the present invention relates to a method of making vinyl acetate monomer, involving contacting reactant gases with a catalyst containing palladium, gold and a support in the presence of clean steam, the clean steam present from about 2 to about 10 psia, with the proviso that the support does not contain alumina or zinc oxide and the support is not treated with a sulfur containing compound. For example, the method of making vinyl acetate monomer may involve the reaction scheme:O.sub.2 +H.sub.2 O+CH.sub.2 CH.sub.2 +CH.sub.3 CO.sub.2 H.fwdarw.CH.sub.3 CO.sub.2 CH.dbd.CH.sub.2 +H.sub.2 O.
    Type: Grant
    Filed: February 5, 1999
    Date of Patent: December 5, 2000
    Assignee: Engelhard Corporation
    Inventors: Donald B. Halcom, Ronald L. Jagta