Patents Represented by Attorney J. Beusen

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  • Process for producing nitrilotriacetonitrile
    Patent number: 4731465
    Abstract: A continuous process for preparing nitrilotriacetonitrile in which the reactants, formaldehyde, hydrogen cyanide, and either ammonia or hexamethylenetetramine are reacted first in a mixing reactor, preferably a circulating loop reactor at from about 90.degree. C. to about 120.degree. C., then reacted in a plug flow tubular reactor at from about 95.degree. C. to about 120.degree. C., then after cooling the reaction mixture crystalline nitrilotriacetonitrile is recovered.
    Type: Grant
    Filed: March 7, 1984
    Date of Patent: March 15, 1988
    Assignee: Monsanto Company
    Inventors: Chung Y. Shen, Kent P. Lannert