Patents Represented by Attorney A. Victor Erkkila

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  • Purification of dinitrotoluene
    Patent number: 3931347
    Abstract: 2,4- AND 2,6-Dinitrotoluenes are separated from mixtures thereof with small mounts of isomeric dinitrotoluene impurities by suspending the mixture in an aqueous solution containing a small amount of an alkali metal disulfide. The isomeric dinitrotoluene impurities are thereby converted to products soluble in the aqueous solution from which the 2,4- and 2,6-dinitrotoluenes can be recovered in excellent yield.
    Type: Grant
    Filed: December 5, 1974
    Date of Patent: January 6, 1976
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: David H. Rosenblatt, William H. Dennis, Jr.