Patents by Inventor T. Ben Hsu

T. Ben Hsu 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).

  • Epoxidate treatment
    Patent number: 5171868
    Abstract: Caustic requirements are substantially reduced in the treatment of epoxidate from olefin/ethylbenzene hydroperoxide epoxidation by treating the epoxidate products with an aqueous stream comprised of alkali metal carbonate, separating a phenol-containing 1-phenyl ethanol fraction from the treated expodiate, separating phenol from the 1-phenyl ethanol fraction by treatment with basic anion exchange resin, regenerating the resin with aqueous alkali metal hydroxide, and converting alkali metal hydroxide from the resin regeneration to alkali metal carbonate for use in the epoxidate treatment.
    Type: Grant
    Filed: April 15, 1992
    Date of Patent: December 15, 1992
    Assignee: ARCO Chemical Technology, L.P.
    Inventors: Rajendra S. Albal, Robert N. Cochran, T. Ben Hsu