Patents Represented by Attorney James C. Davids, Jr.

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  • Method for maximizing yield and purity of bisphenol A
    Patent number: 4766254
    Abstract: Product losses and color formation are sometimes encountered in the synthesis of bisphenol A from phenol and acetone in the presence of a cation exchange resin, particularly in the crude product stream from which bisphenol A has been separated via its phenol adduct. Such losses are suppressed and the crude product stream stabilized and decolorized by contact with an anion exchange resin.
    Type: Grant
    Filed: October 5, 1987
    Date of Patent: August 23, 1988
    Assignee: General Electric Company
    Inventors: Gary R. Faler, Michael J. Cipullo