Patents Represented by Attorney D. E. Keith

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  • Isolation of m,m'-dinitrobenzophenone
    Patent number: 4560800
    Abstract: A process for the preparation and recovery of m,m'-dinitrobenzophenone and which comprises reacting benzophenone with nitric acid in oleum; adjusting the reaction product to a water content from 12 to 30 weight percent; and extracting the m,m'-dinitrobenzophenone with a chlorinated hydrocarbon solvent.
    Type: Grant
    Filed: September 17, 1984
    Date of Patent: December 24, 1985
    Assignee: Gulf Research & Development Co.
    Inventors: Kiran R. Bakshi, Adrian D'Souza, Edward T. Sabourin