Patents Assigned to Occidental Chemical Corp.
  • Process for making aromatic nitriles
    Patent number: 5866709
    Abstract: Disclosed is a process for making an aromatic nitrile by reacting a benzotrichloride with an ammonium halide in the presence of an oxygen-donating initiator at a temperature of about 150.degree. to about 250.degree. C. An optional catalyst of a metal oxide or a metal salt can be used if desired.
    Type: Grant
    Filed: December 2, 1997
    Date of Patent: February 2, 1999
    Assignee: Occidental Chemical Corp
    Inventors: Michael C. Hausladen, Bao-Guo Huang, David Y. Tang
  • Process for the preparation of pentahaloethoxy benzoyl halide compounds
    Patent number: 5047584
    Abstract: A process for the preparation of pentahaloethoxy benzoyl halide compounds comprisingA) chlorinating p-cresyl trifluoroacetate to form p-.alpha., .alpha.-dichloro-.beta.-,.beta.-,.beta.-trifluoroethoxy benzotrichloride;B) converting the p-.alpha., .alpha.-dichloro-.beta.-,.beta.-,.beta.-trifluoroethoxy benzotrichloride to p-pentafluoroethoxy benzoyl fluoride.
    Type: Grant
    Filed: December 9, 1985
    Date of Patent: September 10, 1991
    Assignee: Occidental Chemical Corp.
    Inventors: James J. Maul, Byron R. Cotter
  • Fuel cell structures
    Patent number: 4640876
    Abstract: A single fuel cell (20) is built up from a plurality of plane members (21, 32, 42, 24). A plurality of such cells are stacked together to constitute a fuel cell structure. Each fuel cell in the structure requires access to three independent fluid circuits: an electrolyte circuit including an inlet orifice (88A, 98A) and an outlet orifice (88B, 98B); a gas fuel circuit including inlet and outlet orifices (108); and an oxidant circuit which may be constituted by inlets and outlets in communication with ambient air. In the final structure, these circuits must be effectively sealed from one another and from the surroundings (except for the special case of ambient air oxidant). This invention improves such sealing by preventing unwanted seepage between adjacent ones of the plane members (21, 32, 42, 24) due to defects in planeness and parallelism of the individual plane members.
    Type: Grant
    Filed: July 8, 1985
    Date of Patent: February 3, 1987
    Assignee: Occidental Chemical Corp.
    Inventors: Bernard Warzawski, Pierre Fauvel
  • Apparatus for reacting a particulate solid and a liquid
    Patent number: 4363786
    Abstract: An apparatus useful for the preparation of phosphoric acid from phosphate rock and a strong acid, comprises a closed vessel, a draft tube, means connected to the inner walls of said vessel amd mounting said draft tube in a vertical position within said vessel, an agitator positioned within said draft tube, a shaft for said agitator mounted axially of said vessel and extending into said draft tube, an inlet conduit to said vessel for introducing a feed slurry (e.g.
    Type: Grant
    Filed: September 22, 1980
    Date of Patent: December 14, 1982
    Assignee: Occidental Chemical Corp.
    Inventors: Allen S. Adams, Michael B. Caesar