Patents by Inventor Ching Yong Wu

Ching Yong Wu 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).

  • Patent number: 4935551
    Abstract: m-Diisopropylbenzene dihydroperoxide is produced in good yield in a continuous process by the oxidation of diisopropylbenzene, comprised of major amounts of the m-isomer and less than 6% of the o-isomer, under anhydrous, non-alkaline conditions with oxygen or air at about 85.degree. C.-95.degree. C.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: June 19, 1990
    Assignee: Indspec Chemical Corporation
    Inventor: Ching-Yong Wu
  • Patent number: 4849549
    Abstract: A process for the preparation of resorcinol from diisopropylbenzene includes the steps of oxidizing m-diisopropylbenzene under anhydrous, non-alkaline conditions with oxygen, extracting m-diisopropylbenzene dihydroperoxide and m-diisopropylbenzene hydroxyhydroperoxide with dilute sodium hydroxide, re-extracting with an organic solvent, converting m-diisopropylbenzene hydroxyhydroperoxide to m-diisopropylbenzene dihydroperoxide with hydrogen peroxide, drying the product, decomposing the m-diisopropylbenzene dihydroperoxide in the presence of a catalyst selected from the group consisting of boron trifluoride, ferric chloride and stannic chloride to coproduce resorcinol and actone, and purifying the resorcinol.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: July 18, 1989
    Assignee: Indspec Chemical Corporation
    Inventor: Ching-Yong Wu
  • Patent number: 4847437
    Abstract: An improvement in a process for the preparation of resorcinol which includes the steps of treating an extract of selected oxidation products of diisopropylbenzene with hydrogen peroxide to convert m-HHP to m-DHP, drying the treated extract and thereafter, decomposing the m-DHP in the presence of an effective amount, preferably within the range of about 10 to 50 ppm, of a catalyst selected from the group consisting of boron trifluoride, ferric chloride and stannic chloride.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: July 11, 1989
    Assignee: Indspec Chemical Corporation
    Inventor: Ching-Yong Wu
  • Patent number: 4847436
    Abstract: An improvement in the preparation of resorcinol includes the decomposition of m-diisopropylbenzene dihydroperoxide (m-DHP) to resorcinol and acetone in the presence of an effective amount of a catalyst selected from the group consisting of boron trifluoride, ferric chloride and stannic chloride. Minute quantities of the catalyst, preferably 10 to 50 ppm, are effective to increase the yields of resorcinol.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: July 11, 1989
    Assignee: Indspec Chemical Corporation
    Inventor: Ching-Yong Wu
  • Patent number: 4308409
    Abstract: Propylene is converted to propylene glycol at high selectivity in a process in which ethylbenzene hydroperoxide and water are reacted with propylene in the presence of osmium tetroxide catalyst and a base at a pH of about 14.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: December 29, 1981
    Assignee: Gulf Research & Development Company
    Inventors: Ching-Yong Wu, Thaddeus P. Kobylinski, John E. Bozik
  • Patent number: 4297518
    Abstract: Cumene hydroperoxide in a solvent comprising phenol and acetone is decomposed to phenol and acetone using a soluble rhenium compound.
    Type: Grant
    Filed: November 18, 1977
    Date of Patent: October 27, 1981
    Assignee: Gulf Research & Development Company
    Inventors: Ching-Yong Wu, Wayne R. Pretzer, Thaddeus P. Kobylinski
  • Patent number: 4282384
    Abstract: The hydroperoxides of diisopropylbenzene are prepared by the oxidation of diisopropylbenzene with molecular oxygen in the presence of a minute amount of solid barium oxide.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: August 4, 1981
    Assignee: Gulf Research & Development Company
    Inventors: Ching-Yong Wu, Harold E. Swift, John E. Bozik
  • Patent number: 4280924
    Abstract: A catalyst residue containing osmium catalyst having a substantial component with a valency state less than +5 is regenerated to a valency state greater than +5 by contacting the residue with an organic hydroperoxide at a pH greater than 7 and the regenerated catalyst residue is recycled to a hydroxylation reactor containing ethylene or propylene, a polar organic solvent, an aqueous solution of cesium, rubidium, potassium or tetraalkylammonium hydroxide and an organic hydroperoxide.
    Type: Grant
    Filed: December 28, 1979
    Date of Patent: July 28, 1981
    Assignee: Gulf Research & Development Company
    Inventors: Ching-Yong Wu, Thaddeus P. Kobylinski
  • Patent number: 4255599
    Abstract: Ethylbenzene is converted to styrene at high selectivity in a multistage process in which ethylbenzene is oxidized to ethylbenzene hydroperoxide which is reacted with ethylene or propylene to produce a mixture of 1-phenylethanol and acetophenone which are converted to styrene.
    Type: Grant
    Filed: March 12, 1980
    Date of Patent: March 10, 1981
    Assignee: Gulf Research & Development Company
    Inventors: Ching-Yong Wu, Thaddeus P. Kobylinski, John E. Bozik
  • Patent number: 4255596
    Abstract: Ethylene is converted to ethylene glycol at high selectivity in a process in which ethylbenzene hydroperoxide and water are reacted with ethylene in the presence of osmium tetroxide catalyst and a base at a pH of about 14.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: March 10, 1981
    Assignee: Gulf Research & Development Company
    Inventors: Ching-Yong Wu, Thaddeus P. Kobylinski, John E. Bozik
  • Patent number: 4229601
    Abstract: Ethylene or propylene is converted to the corresponding glycol at high selectivity in a process in which t.butyl hydroperoxide is reacted with the olefin in a two-phase liquid, organic-aqueous reaction system in the presence of osmium tetroxide and cesium, rubidium or potassium hydroxide.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: October 21, 1980
    Assignee: Gulf Research & Development Company
    Inventors: Ching-Yong Wu, Thaddeus P. Kobylinski
  • Patent number: 4217291
    Abstract: Osmium (III) or (IV) in an anionic complex with oxygen and having an alkali metal, ammonium or tetra(lower)alkylammonium cation is oxidized to a valency state higher than 5 by reaction with an organic hydroperoxide, such as ethylbenzene hydroperoxide, at a temperature less than 30.degree. C.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: August 12, 1980
    Assignee: Gulf Research & Development Company
    Inventors: Ching-Yong Wu, Thaddeus P. Kobylinski
  • Patent number: 4217287
    Abstract: A process for epoxidizing an alpha-olefin by adding an alpha-olefin and an oxygen transfer catalyst to a hydroperoxide stabilized with barium oxide.
    Type: Grant
    Filed: August 11, 1978
    Date of Patent: August 12, 1980
    Assignee: Gulf Research & Development Company
    Inventors: Ching-Yong Wu, Harold E. Swift, John E. Bozik
  • Patent number: 4215068
    Abstract: 1,3-Dicyanocyclopentane is prepared by the hydrocyanation of 2-cyanocyclopentene in the presence of a catalyst system comprising a zero valent nickel complex, free of carbon monoxide, and a promoting amount of a metal compound such as zinc chloride.
    Type: Grant
    Filed: April 2, 1979
    Date of Patent: July 29, 1980
    Assignee: Gulf Research & Development Company
    Inventors: Ching-Yong Wu, Harold E. Swift
  • Patent number: 4203926
    Abstract: Ethylbenzene hydroperoxide and ethylene or propylene are converted to acetophenone, 1-phenylethanol and the corresponding glycol at high selectivity in a process in which ethylbenzene hydroperoxide is reacted with the olefin in a two-phase liquid, organic-aqueous reaction system in the presence of osmium tetroxide and cesium, rubidium or potassium hydroxide.
    Type: Grant
    Filed: December 18, 1978
    Date of Patent: May 20, 1980
    Assignee: Gulf Research & Development Company
    Inventors: Ching-Yong Wu, Thaddeus P. Kobylinski
  • Patent number: 4173587
    Abstract: Cumene hydroperoxide in a solvent is decomposed to phenol and acetone using a non-soluble rhenium compound.
    Type: Grant
    Filed: November 18, 1977
    Date of Patent: November 6, 1979
    Assignee: Gulf Research and Development Company
    Inventors: Ching-Yong Wu, Wayne R. Pretzer, Thaddeus P. Kobylinski
  • Patent number: 4158022
    Abstract: Ethylbenzene hydroperoxide is prepared by the oxidation of ethylbenzene with molecular oxygen in the presence of a minute amount of solid barium oxide.
    Type: Grant
    Filed: November 29, 1977
    Date of Patent: June 12, 1979
    Assignee: Gulf Research & Development Company
    Inventors: Ching-Yong Wu, Harold E. Swift, John E. Bozik
  • Patent number: 4153635
    Abstract: Cumene hydroperoxide is prepared by the oxidation of cumene with molecular oxygen in the presence of a minute amount of solid barium oxide.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: May 8, 1979
    Assignee: Gulf Research & Development Company
    Inventors: Ching-Yong Wu, Harold E. Swift, John E. Bozik
  • Patent number: 4151194
    Abstract: A mixture of 3,8- and 4,8-dicyanotricyclo[5.2.1.0]decane is prepared by the hydrocyanation of 8-cyanotricyclo[5.2.1.0]dec-3-ene in the presence of a catalyst system comprising a zero valent nickel complex, free of carbon monoxide, a promoting amount of a metal compound such as zinc chloride and a hydroxy-containing aryl compound such as p-cresol as a solvent.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: April 24, 1979
    Assignee: Gulf Research & Development Company
    Inventors: Ching-Yong Wu, Harold E. Swift
  • Patent number: 4096103
    Abstract: A pressure-sensitive adhesive composition consisting essentially of a natural or synthetic tackifier, an elastomer comprising isoprene and piperylene and a solvent. The elastomer is preferably prepared from certain selected copolymerized C.sub.5 -hydrocarbons from a hydrocarbon mixture containing C.sub.5 -monoolefinic hydrocarbons, C.sub.5 -diolefinic hydrocarbons (cyclic and acyclic), C.sub.5 -paraffins, C.sub.6 -aliphatics, and benzene.The elastomers thus formed, when mixed with certain natural or synthetic tackifiers, have the required tack of pressure-sensitive adhesives.
    Type: Grant
    Filed: December 29, 1976
    Date of Patent: June 20, 1978
    Assignee: Gulf Research & Development Company
    Inventors: Pallavoor R. Lakshmanan, Harold E. Swift, Ching Yong Wu