Patents by Inventor Arnold D. Harley

Arnold D. Harley 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).

  • Selective gas phase chlorination of polychlorinated .beta.-picolines to produce 2,3,5,6-tetrachloropyridine and its precursors
    Patent number: 5319088
    Abstract: 2,3,5,6-Tetrachloropyridine, and 2,3-dichloro-5-(trichloromethyl)pyridine are prepared by selectively chlorinating polychlorinated .beta.-picolines in the vapor phase between about 250.degree. and 450.degree. C. in the presence of specific Lewis acid halide catalysts on an inorganic support. The gamma position on the pyridine ring is usually not chlorinated in the starting material or reaction products. These compounds are useful intermediates to produce insecticides and herbicides.
    Type: Grant
    Filed: November 26, 1991
    Date of Patent: June 7, 1994
    Assignee: DowElanco
    Inventors: Clark P. Allphin, Michael A. DesJardin, Arnold D. Harley
  • Catalyst diluent for oxychlorination process
    Patent number: 5202511
    Abstract: Alumina is used as a support for the CuCl2 catalyst and as a diluent in the oxychlorination of ethylene. When a low surface area alumina, e.g. high purity alpha-alumina, is used as diluent for the reaction, reduced oxidation and less chlorinated by-products are achieved. Alternatively, the alumina used as the catalyst support, e.g. a gamma-alumina which has a high surface area and higher amounts of impurities, can be used as diluent if it is impregnated with an alkali metal ion, e.g K+ ion, which is usually employed as a salt.
    Type: Grant
    Filed: August 16, 1989
    Date of Patent: April 13, 1993
    Assignee: The Dow Chemical Company
    Inventors: Leopoldo Salinas, III, Thomas E. Morris, Arnold D. Harley