Patents by Inventor Ernest W. Arnold, III

Ernest W. Arnold, III 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 preparing 2,5-diphenylterephthalic acid by oxidation
    Patent number: 5334754
    Abstract: Provided is a process for preparing 2,5-diphenylterephthalic acid, which is useful in preparing certain polyesters, especially liquid-crystalline polyesters. In this process, p-xylene is di-alkylated with cyclohexene to provide 2,5-dicyclo-hexyl-p-xylene, which is in turn dehydrogenated to provide 2,5-diphenylxylene. 2,5-Diphenylxylene is then oxidized to provide 2,5-diphenylterephthalic acid by utilization of a cobaltous/manganous/bromide oxidation system.
    Type: Grant
    Filed: August 14, 1992
    Date of Patent: August 2, 1994
    Assignee: Eastman Chemical Company
    Inventors: Charles E. Sumner, Jr., Bruce L. Gustafson, Ernest W. Arnold, III, Eric J. Fugate, Dewey W. Fuller, Jr.
  • Process for the preparation of copoly(arylene sulfide) having an enhanced rate of crystallization
    Patent number: 5155183
    Abstract: Disclosed is a process for preparing a final copoly(arylene sulfide) by contacting an original copoly(phenylene sulfide) with a poly(phenylene sulfide) in the melt phase. The final copoly(arylene sulfide) exhibits an enhanced rate of crystallization.
    Type: Grant
    Filed: April 16, 1991
    Date of Patent: October 13, 1992
    Assignee: Eastman Kodak Company
    Inventors: Ernest W. Arnold, III, Joseph J. Watkins, David R. Fagerburg, Paul B. Lawrence