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).
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Patent number: 4935551Abstract: 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: GrantFiled: December 22, 1987Date of Patent: June 19, 1990Assignee: Indspec Chemical CorporationInventor: Ching-Yong Wu
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Patent number: 4849549Abstract: 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: GrantFiled: December 22, 1987Date of Patent: July 18, 1989Assignee: Indspec Chemical CorporationInventor: Ching-Yong Wu
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Patent number: 4847437Abstract: 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: GrantFiled: December 22, 1987Date of Patent: July 11, 1989Assignee: Indspec Chemical CorporationInventor: Ching-Yong Wu
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Patent number: 4847436Abstract: 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: GrantFiled: December 22, 1987Date of Patent: July 11, 1989Assignee: Indspec Chemical CorporationInventor: Ching-Yong Wu
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Patent number: 4308409Abstract: 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: GrantFiled: July 28, 1980Date of Patent: December 29, 1981Assignee: Gulf Research & Development CompanyInventors: Ching-Yong Wu, Thaddeus P. Kobylinski, John E. Bozik
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Patent number: 4297518Abstract: Cumene hydroperoxide in a solvent comprising phenol and acetone is decomposed to phenol and acetone using a soluble rhenium compound.Type: GrantFiled: November 18, 1977Date of Patent: October 27, 1981Assignee: Gulf Research & Development CompanyInventors: Ching-Yong Wu, Wayne R. Pretzer, Thaddeus P. Kobylinski
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Patent number: 4282384Abstract: 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: GrantFiled: May 5, 1980Date of Patent: August 4, 1981Assignee: Gulf Research & Development CompanyInventors: Ching-Yong Wu, Harold E. Swift, John E. Bozik
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Patent number: 4280924Abstract: 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: GrantFiled: December 28, 1979Date of Patent: July 28, 1981Assignee: Gulf Research & Development CompanyInventors: Ching-Yong Wu, Thaddeus P. Kobylinski
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Patent number: 4255599Abstract: 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: GrantFiled: March 12, 1980Date of Patent: March 10, 1981Assignee: Gulf Research & Development CompanyInventors: Ching-Yong Wu, Thaddeus P. Kobylinski, John E. Bozik
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Patent number: 4255596Abstract: 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: GrantFiled: February 25, 1980Date of Patent: March 10, 1981Assignee: Gulf Research & Development CompanyInventors: Ching-Yong Wu, Thaddeus P. Kobylinski, John E. Bozik
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Patent number: 4229601Abstract: 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: GrantFiled: December 26, 1978Date of Patent: October 21, 1980Assignee: Gulf Research & Development CompanyInventors: Ching-Yong Wu, Thaddeus P. Kobylinski
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Patent number: 4217291Abstract: 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: GrantFiled: December 26, 1978Date of Patent: August 12, 1980Assignee: Gulf Research & Development CompanyInventors: Ching-Yong Wu, Thaddeus P. Kobylinski
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Patent number: 4217287Abstract: 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: GrantFiled: August 11, 1978Date of Patent: August 12, 1980Assignee: Gulf Research & Development CompanyInventors: Ching-Yong Wu, Harold E. Swift, John E. Bozik
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Patent number: 4215068Abstract: 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: GrantFiled: April 2, 1979Date of Patent: July 29, 1980Assignee: Gulf Research & Development CompanyInventors: Ching-Yong Wu, Harold E. Swift
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Patent number: 4203926Abstract: 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: GrantFiled: December 18, 1978Date of Patent: May 20, 1980Assignee: Gulf Research & Development CompanyInventors: Ching-Yong Wu, Thaddeus P. Kobylinski
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Patent number: 4173587Abstract: Cumene hydroperoxide in a solvent is decomposed to phenol and acetone using a non-soluble rhenium compound.Type: GrantFiled: November 18, 1977Date of Patent: November 6, 1979Assignee: Gulf Research and Development CompanyInventors: Ching-Yong Wu, Wayne R. Pretzer, Thaddeus P. Kobylinski
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Patent number: 4158022Abstract: Ethylbenzene hydroperoxide is prepared by the oxidation of ethylbenzene with molecular oxygen in the presence of a minute amount of solid barium oxide.Type: GrantFiled: November 29, 1977Date of Patent: June 12, 1979Assignee: Gulf Research & Development CompanyInventors: Ching-Yong Wu, Harold E. Swift, John E. Bozik
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Patent number: 4153635Abstract: Cumene hydroperoxide is prepared by the oxidation of cumene with molecular oxygen in the presence of a minute amount of solid barium oxide.Type: GrantFiled: December 12, 1977Date of Patent: May 8, 1979Assignee: Gulf Research & Development CompanyInventors: Ching-Yong Wu, Harold E. Swift, John E. Bozik
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Patent number: 4151194Abstract: 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: GrantFiled: December 12, 1977Date of Patent: April 24, 1979Assignee: Gulf Research & Development CompanyInventors: Ching-Yong Wu, Harold E. Swift
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Patent number: 4096103Abstract: 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: GrantFiled: December 29, 1976Date of Patent: June 20, 1978Assignee: Gulf Research & Development CompanyInventors: Pallavoor R. Lakshmanan, Harold E. Swift, Ching Yong Wu