Patents Represented by Attorney Normal L. Sims

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  • Process for preparation of 2-oxazolidinones
    Patent number: 4500717
    Abstract: The invention is a process for the preparation of 2-oxazolidinones which comprises contacting a 2-hydroxyalkyl carbamate with an alkylene oxide or alkylene carbonate in the presence of a catalytic amount of a quaternary ammonium halide, quaternary phosphonium halide, a group I metal carbonate, hydroxide, oxide or halide, or a group II metal carbonate, hydroxide, oxide or halide under conditions such that a 2-oxazolidinone is prepared.
    Type: Grant
    Filed: March 28, 1983
    Date of Patent: February 19, 1985
    Assignee: The Dow Chemical Company
    Inventors: Frank T. Cook, Michael O. Nutt, Hsin H. Hsieh
  • Electrochemical preparation of ether ketones from (poly)propylene glycol monoethers
    Patent number: 4431493
    Abstract: This invention is a method for preparing an ether ketone comprising electrolyzing a solution containing a (poly)propylene glycol monoether, hydroxyl ions and optionally water in an electrolytic cell having an anode at least partially coated with nickel peroxide, silver peroxide, cobalt peroxide or copper peroxide.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: February 14, 1984
    Assignee: The Dow Chemical Company
    Inventor: Karel A. J. Snoble