Patents Represented by Attorney Edward J. Whitfield

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  • Intermediates of and process for making 3-[5-[1-(2-, 3-, or 4-methyl, or ethyl or isopropylphenoxy)alkyl, alkynyl, alkenyl, or haloalkyl]-1,3,4-thiadiazol-2-yl]-4-hydroxy-1-methyl-2-imidazolidinones
    Patent number: 4252961
    Abstract: The disclosed compounds such as 3-[5-[1-(2-methylphenoxy)ethyl]-1,3,4-thiadiazol-2-yl]-4-hydroxy-1-methyl- 2-imidazolidinone, control weeds preemergence and postemergence.
    Type: Grant
    Filed: February 21, 1980
    Date of Patent: February 24, 1981
    Assignee: PPG Industries, Inc.
    Inventor: Jerome M. Lavanish
  • Intermediates of and methods of making 3-[5-[1-(nitrophenoxy)alkyl, alkynyl, alkenyl or haloalkyl]-1,3,4-thiadiazol-2-yl]-4-hydroxy-1-methyl-2-imidazolidinones
    Patent number: 4252960
    Abstract: The disclosed compounds such as 3-[5-[1-(2-nitrophenoxy)ethyl]-1,3,4-thiadiazol-2-yl]-4-hydroxy-1-methyl-2 -imidazolidinone are useful for preemergence control of weeds such as jimsonweed.
    Type: Grant
    Filed: February 21, 1980
    Date of Patent: February 24, 1981
    Assignee: PPG Industries, Inc.
    Inventor: Jerome M. Lavanish
  • Brominated cinnamalacetophenone
    Patent number: 4244825
    Abstract: A novel mixture of brominated cinnamalacetophenones is provided said mixture consisting essentially of from about 80 to 90 percent by weight chain brominated cinnamalacetophenone tetrabromide, from about 5 to about 10 percent by weight chain brominated cinnamalacetophenone dibromide and from about 5 to about 10 percent by weight di-ring brominated cinnamalacetophenone hexabromide.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: January 13, 1981
    Assignee: PPG Industries, Inc.
    Inventor: Lowell D. Grinninger
  • Ethylene epoxidation catalyst
    Patent number: 4235757
    Abstract: A silver containing ethylene epoxidation catalyst prepared by impregnating a support with a solution comprising a reducible silver compound and reducing the silver compound to metallic silver in the presence of a diaminoalkyl-alkanol, preferably, 2-(2-aminoethylamino)ethanol.
    Type: Grant
    Filed: September 27, 1979
    Date of Patent: November 25, 1980
    Assignee: PPG Industries, Inc.
    Inventor: James C. Cannon
  • Production of dichlorobenzene
    Patent number: 4235825
    Abstract: Dichlorobenzene having a higher ratio of para isomer to ortho isomer is produced by the liquid phase chlorination of benzene or monochlorobenzene in the presence of a two-component catalyst consisting of a metal halide, e.g., ferric chloride, and diethylether.
    Type: Grant
    Filed: November 2, 1979
    Date of Patent: November 25, 1980
    Assignee: PPG Industries, Inc.
    Inventor: Joseph E. Milam
  • Cathodic current conducting elements for use in aluminum reduction cells
    Patent number: 4231853
    Abstract: A cathode current conducting element for use in a metal e.g. aluminum reduction cell, said element comprising a plate or tile formed of electrically conductive refractory material affixed to the carbon lining of the cell and in loosely restrained engagement therewith by means of a pin embedded in the carbon lining.
    Type: Grant
    Filed: April 27, 1979
    Date of Patent: November 4, 1980
    Assignee: PPG Industries, Inc.
    Inventor: Henry W. Rahn
  • Dehydrochlorination process
    Patent number: 4225519
    Abstract: Increased selectivity to vinylidene chloride is obtained in the catalytic vapor phase dehydrochlorination of 1,1,2-trichloroethane by conducting the reaction in the presence of a cesium nitrate catalyst.
    Type: Grant
    Filed: December 18, 1978
    Date of Patent: September 30, 1980
    Assignee: PPG Industries, Inc.
    Inventor: Arthur E. Reinhardt, III
  • Stabilization of cyclohexene oxide
    Patent number: 4217310
    Abstract: Cyclohexene oxide is stabilized against peroxidative decomposition by inclusion therein of a stabilizing amount of glycidol. The glycidol stabilized cyclohexene oxide is particularly suited in stabilizing unsaturated chlorinated solvents, e.g., perchloroethylene and trichloroethylene against metal induced decomposition.
    Type: Grant
    Filed: August 18, 1978
    Date of Patent: August 12, 1980
    Assignee: PPG Industries, Inc.
    Inventor: Charles L. Cormany
  • Storable glass batch composition
    Patent number: 4211568
    Abstract: A glass batch that retains its free-flowing properties during storage is disclosed wherein at least 50 percent of the Na.sub.2 O requirement of the batch is provided by an aqueous sodium hydroxide solution consisting of both solid and solution phases at the temperature at which the batch is stored.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: July 8, 1980
    Assignee: PPG Industries, Inc.
    Inventor: Douglas H. Davis
  • Catalyst for hydrogenation of glycolic acid
    Patent number: 4203870
    Abstract: Glycolic acid is hydrogenated in the liquid phase in the presence of a catalyst consisting essentially of metallic cobalt and thorium oxide.
    Type: Grant
    Filed: November 6, 1978
    Date of Patent: May 20, 1980
    Assignee: PPG Industries, Inc.
    Inventor: Donald R. Nielsen
  • Preparation of haloaniline
    Patent number: 4197259
    Abstract: Haloaniline is produced in high yield by reacting halobenzene with a mixture containing a metal amide and a controlled molar excess of liquid ammonia based on the moles of halobenzene.
    Type: Grant
    Filed: February 22, 1979
    Date of Patent: April 8, 1980
    Assignee: PPG Industries, Inc.
    Inventor: Frederick F. Guzik
  • Preparation of ethylene glycol
    Patent number: 4195190
    Abstract: Ethylene glycol is produced by the liquid phase reaction of ethylene, oxygen and water in the presence of a catalyst comprising iodine or an iodine-containing compound and bromine or a bromine-containing compound.
    Type: Grant
    Filed: April 3, 1978
    Date of Patent: March 25, 1980
    Assignee: PPG Industries, Inc.
    Inventors: Thomas R. Bierschenk, Rowland Pettit, Donald R. Nielsen
  • Extraction of phenylenediamine from aqueous alkaline solution
    Patent number: 4193938
    Abstract: Phenylenediamine is obtained in high yield and in high purity from an aqueous alkaline solution of phenylenediamine by liquid-liquid extraction of said solution with a C.sub.1 chlorinated solvent.
    Type: Grant
    Filed: March 8, 1978
    Date of Patent: March 18, 1980
    Assignee: PPG Industries, Inc.
    Inventor: Preston S. White
  • Vapor phase chlorination of 1,1-dichloroethane
    Patent number: 4192823
    Abstract: In the preparation of methylchloroform by vapor phase chlorination of 1,1-dichloroethane, the formation of undesirable chlorohydrocarbon reaction products is suppressed by conducting the vapor phase reaction in the presence of a controlled amount of carbon dioxide gas.
    Type: Grant
    Filed: March 6, 1978
    Date of Patent: March 11, 1980
    Assignee: PPG Industries, Inc.
    Inventors: Walker H. Rideout, John D. Mansell
  • Production of hypochlorous acid
    Patent number: 4190638
    Abstract: An aqueous hypochlorous acid production process is disclosed wherein the precipitate formed upon carbonating electrolytic cathode cell liquor is contacted in a fluidized bed with a mixture of gaseous chlorine and water vapor and the exit gas from the fluidized bed is absorbed in water.
    Type: Grant
    Filed: June 7, 1978
    Date of Patent: February 26, 1980
    Assignee: PPG Industries, Inc.
    Inventors: Howard H. Hoekje, Russell R. May
  • Cathode element for use in aluminum reduction cell
    Patent number: 4177128
    Abstract: An improved cathode element for use in a metal, e.g., aluminum reduction cell, said cathode element comprising an elongated hollow body, the lower end of which is affixed to or imbedded in the floor of the cell, the upper end of which terminates proximate the anode said upper end provided with a cap element formed of an electrically conductive material said cap element being in electrically conductive communication with a body of molten metal confined within the hollow body.
    Type: Grant
    Filed: December 20, 1978
    Date of Patent: December 4, 1979
    Assignee: PPG Industries, Inc.
    Inventor: Henry W. Rahn
  • Catalyst for production of ethylene dichloride
    Patent number: 4172052
    Abstract: Ethylene dichloride having a reduced chloral content is prepared by vapor phase oxychlorination of ethylene in the presence of a catalyst comprising aluminum halide and copper halide carried on a particulate support.
    Type: Grant
    Filed: November 25, 1977
    Date of Patent: October 23, 1979
    Assignee: PPG Industries, Inc.
    Inventor: Robbie T. Foster
  • Process for preparing halogenated diaryl hydrogen phosphates
    Patent number: 4170614
    Abstract: Halogenated diaryl hydrogen phosphates having in admixture only a minor proportion of monoaryl and triaryl phosphates are prepared by selectively hydrolyzing a corresponding triaryl phosphate or by reacting 2,6-dihalophenols having bromine or iodine atoms in the 2 and 6 positions with a phosphorous oxyhalide in the presence of an aromatic tertiary amine or carboxylic acid amide and, preferably, an inert organic solvent to form a mixture of diaryl-phosphorohalidate and triaryl phosphate and hydrolyzing the mixture.
    Type: Grant
    Filed: August 14, 1978
    Date of Patent: October 9, 1979
    Assignee: PPG Industries, Inc.
    Inventor: John C. Crano
  • Purification and recovery of ethylene dichloride
    Patent number: 4162201
    Abstract: Carbon tetrachloride and chloroform are separated as a light fraction from ethylene dichloride by distilling the ethylene dichloride under reflux conditions to maintain a chloroform concentration greater than 51.5 mole percent in the reflux liquid.
    Type: Grant
    Filed: July 12, 1978
    Date of Patent: July 24, 1979
    Assignee: PPG Industries, Inc.
    Inventor: Aurelio M. Crico
  • Purification of ethylene dichloride
    Patent number: 4151212
    Abstract: The chloral content of ethylene dichloride, produced by the catalytic vapor phase oxychlorination of ethylene, is reduced by passing the gaseous effluent stream from the oxychlorination reactor through a bed of alumina.
    Type: Grant
    Filed: July 7, 1978
    Date of Patent: April 24, 1979
    Assignee: PPG Industries, Inc.
    Inventor: Walker H. Rideout