Patents Represented by Attorney Pamela J. McCollough
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Patent number: 5929259Abstract: This invention relates to a process for preparing an ethylene oxide catalyst by depositing silver and one or more alkali metal promoters on an alpha alumina carrier in which a fired carrier body is impregnated with a source of titania in a liquid medium that upon heating yields titania and is then calcined to generate titania uniformly dispersed in the carrier in an amount of up to about 10 percent by weight, basis the total weight of the carrier, and subsequently drying the carrier having said silver and alkali metal supported thereon.Type: GrantFiled: November 25, 1997Date of Patent: July 27, 1999Assignee: Shell Oil CompanyInventor: John Robert Lockemeyer
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Patent number: 5827397Abstract: This invention related to a process for the deinking of a mixture of xerographically printed wastepaper stocks and ledger printed wastepaper stocks which comprises:a) converting the wastepaper to a pulp,b) contacting the pulp with an aqueous medium of alkaline pH containing between about 0.Type: GrantFiled: March 17, 1997Date of Patent: October 27, 1998Assignee: Shell Oil CompanyInventor: Ruth Javier Blanco
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Patent number: 5821191Abstract: The present invention relates to a process for presulfiding hydrocarbon processing catalysts by impregnating the catalyst with an inorganic polysulfide solution containing at least one water-soluble oxygenated hydrocarbon such that at least a portion of said sulfide or sulfur is incorporated in the pores of said catalyst, and thereafter heating the sulfur-incorporated catalyst under non-oxidizing conditions to fix the incorporated sulfur onto the catalyst.Type: GrantFiled: June 17, 1996Date of Patent: October 13, 1998Assignee: Shell Oil CompanyInventor: John Robert Lockemeyer
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Patent number: 5801259Abstract: This invention relates to an ethylene oxide catalyst which contains silver and one or more alkali metal promoters supported on a carrier prepared by a process comprising the use of ceramic particle components with particle sizes chosen to ensure that a desired degree of porosity is obtained without the use of organic burnout materials.Type: GrantFiled: April 30, 1996Date of Patent: September 1, 1998Assignee: Shell Oil CompanyInventor: Ruth Mary Kowaleski
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Patent number: 5786293Abstract: The present invention relates to a process for presulfiding hydrocarbon processing catalysts by impregnating the catalyst with an inorganic polysulfide solution such that at least a portion of said sulfide or sulfur is incorporated in the pores of said catalyst, and thereafter heating the sulfur-incorporated catalyst under non-oxidizing conditions to fix the incorporated sulfur onto the catalyst.Type: GrantFiled: June 17, 1996Date of Patent: July 28, 1998Assignee: Shell Oil CompanyInventor: John Robert Lockemeyer
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Patent number: 5739075Abstract: This invention relates to a process for the preparation of a catalyst suitable for the production of ethylene oxide which process comprises depositing a promoting amount of a salt of a rare earth metal and a promoting amount of a salt of an alkaline earth metal and/or a salt of a Group VIII transition metal on a porous, refractory support, calcining the support, and thereafter depositing a catalytically effective amount of silver, a promoting amount of alkali metal, and optionally, a promoting amount of rhenium and/or a promoting amount of a rhenium co-promoter selected from sulfur, molybdenum, tungsten, chromium, phosphorus, boron and mixtures thereof, on the support, and subsequently drying the support.Type: GrantFiled: October 6, 1995Date of Patent: April 14, 1998Assignee: Shell Oil CompanyInventor: Marek Matusz
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Patent number: 5693582Abstract: A process for regenerating used catalysts having deposited on their surface contaminants comprising carbonaceous and/or sulfur-containing materials which comprises:a) contacting said particles in a fluidized bed with an oxygen-containing gas at an elevated temperature for a time which does not exceed about twenty minutes wherein at least about fifty percent by weight of the sulfur contaminants are removed, andb) passing the thus treated catalyst particles to a moving belt and causing the belt to move said catalyst particles through a furnace for at least about two hours, wherein said furnace is maintained at a temperature sufficient to remove the remaining portion of the contaminants from the particles.Type: GrantFiled: February 20, 1997Date of Patent: December 2, 1997Assignee: Shell Oil CompanyInventors: Charles Arthur Vuitel, Rong-Her Jean
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Patent number: 5681903Abstract: A process for the preparation of polymeric alpha,omega-dialdehydes, diacids and mixtures thereof, which process comprises reacting a corresponding polymeric aliphatic alkanediol with a stable free radical nitroxide in the presence of a NO.sub.x -generating compound, an oxidant and, optionally, a solvent and/or a bromide-containing compound, and thereafter separating out the polymeric alpha,omega-dialdehyde and/or diacid.Type: GrantFiled: December 20, 1995Date of Patent: October 28, 1997Assignee: Shell Oil CompanyInventors: Herbert Elliott Fried, Michael Wayne Potter
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Patent number: 5672802Abstract: This invention relates a process for the preparation of an alpha olefin product having a narrow molecular weight range which comprises metathesizing an internal olefin under non-equilibrium conditions and thereby producing a lower boiling internal olefin product which is removed as formed, and a high boiling mid-chain internal olefin product, thereafter contacting and reacting the high boiling mid-chain internal olefin product with ethylene to produce an alpha olefin product having a narrow molecular weight range.Type: GrantFiled: March 19, 1996Date of Patent: September 30, 1997Assignee: Shell Oil CompanyInventor: Eugene Frederick Lutz
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Patent number: 5663385Abstract: This invention relates to an ethylene oxide catalyst having improved initial selectivity which catalyst comprises silver, a promoting amount of alkali metal, a promoting amount of rhenium and a promoting amount of rhenium-co-promoter selected from phosphorus, boron and mixtures thereof, supported on a porous refractory support.Type: GrantFiled: May 9, 1996Date of Patent: September 2, 1997Assignee: Shell Oil CompanyInventor: Richard Alan Kemp
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Patent number: 5608106Abstract: A process for preparing an alkoxyalkanoic acid by reacting the corresponding alkoxyalkanol with a resin-supported stable free radical nitroxide in the presence of a NO.sub.x -generating compound and, optionally, an oxidant and/or a solvent at a temperature in the range of from about 0.degree. C. to about 100.degree. C. and thereafter separating out the alkoxyalkanoic acid.Type: GrantFiled: May 11, 1995Date of Patent: March 4, 1997Assignee: Shell Oil CompanyInventors: Herbert E. Fried, David M. Singleton, Raul A. Pabon, Jr.
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Patent number: 5608107Abstract: A process for preparing an alkoxyalkanoic acid by reacting the corresponding alkoxyalkanol with a resin-supported stable free radical nitroxide in the presence of a chlorine-containing oxidant and a solvent at a temperature in the range of from about 0.degree. C. to about 35.degree. C. and thereafter separating out the alkoxyalkanoic acid.Type: GrantFiled: May 31, 1995Date of Patent: March 4, 1997Assignee: Shell Oil CompanyInventors: Herbert E. Fried, David M. Singleton
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Patent number: 5557027Abstract: The present invention relates to a catalyst suitable for oligomerization of olefins which is prepared by a process which comprises reacting a catalyst precursor ligand having a formula ##STR1## wherein R.sub.1 and R.sub.2 each independently is an alkyl, alkoxy, aryl, or aryloxy group having from about 1 to about 20 carbon atoms, with the proviso that R.sub.1 and R.sub.2 are not both aryl, or R.sub.1 and R.sub.2 together form a divalent hydrocarbon moiety, and X is 1,2-arylene, O-CH.sub.2, S-CH.sub.2, or Se-CH.sub.2 with a deprotonation source, a transition metal compound and a catalyst activator. The invention further relates to an oligomerization process utilizing this catalyst.Type: GrantFiled: January 13, 1995Date of Patent: September 17, 1996Assignee: Shell Oil CompanyInventor: Richard A. Kemp
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Patent number: 5545603Abstract: This invention relates to an ethylene oxide catalyst having improved initial selectivity which catalyst comprises silver, a promoting amount of alkali metal, a promoting amount of rhenium and a promoting amount of rhenium co-promoter selected from phosphorus, boron and mixtures thereof, supported on a porous refractory support.Type: GrantFiled: November 1, 1994Date of Patent: August 13, 1996Assignee: Shell Oil CompanyInventor: Richard A. Kemp
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Patent number: 5536889Abstract: This invention relates to a process for the two-stage hydrogenation of methyl esters which comprises: a) contacting and reacting one or more detergent range methyl esters with hydrogen under predominantly liquid phase hydrogenation conditions at a temperature of less than about 230.degree. C., in the presence of a catalyst comprising a copper compound, a zinc compound, and at least one compound selected from the group consisting of aluminum, zirconium, magnesium, a rare earth and mixtures thereof, to produce an alcohol product and a wax ester product, and b) contacting and reacting the wax ester product from step a) with hydrogen under predominantly liquid phase hydrogenation conditions at a temperature greater than about 220.degree. C. in the presence of a catalyst comprising a copper compound, a zinc compound, and at least one compound selected from the group consisting of aluminum, zirconium, magnesium, a rare earth and mixtures thereof, to produce an alcohol product.Type: GrantFiled: September 29, 1995Date of Patent: July 16, 1996Assignee: Shell Oil CompanyInventors: Howard L. Fong, David M. Singleton, Richard E. Robertson
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Patent number: 5488154Abstract: A process for the preparation of an alkoxyalkanoic acid by reacting the corresponding alkoxyalkanol with a stable free radical nitroxide in the presence of a chromium (II) salt, a highly polar solvent, an oxidant and water, at a temperature in the range of from about 0.degree. C. to about 100.degree. C. and thereafter separating out the alkoxyalkanoic acid.Type: GrantFiled: October 13, 1994Date of Patent: January 30, 1996Assignee: Shell Oil CompanyInventor: Herbert E. Fried
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Patent number: 5486628Abstract: This invention relates to an ethylene oxide catalyst having improved selectivity stability which catalyst comprises silver, a promoting amount of alkali metal, a promoting amount of rare earth, a promoting amount of rhenium and, optionally, a promoting amount of rhenium co-promoter selected from sulfur, molybdenum, tungsten, chromium and mixtures thereof, supported on a porous refractory support.Type: GrantFiled: May 23, 1995Date of Patent: January 23, 1996Inventor: Richard A. Kemp
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Patent number: 5475160Abstract: This invention relates to a process for the direct hydrogenation of triglycerides which comprises contacting and reacting one or more triglyceride with hydrogen under liquid phase hydrogenation conditions in the presence of a catalyst comprising a copper compound, a zinc compound, at least one rare earth compound, and, optionally, a compound selected from the group consisting of aluminum, zirconium, magnesium, and mixtures thereof.Type: GrantFiled: November 7, 1994Date of Patent: December 12, 1995Assignee: Shell Oil CompanyInventors: David M. Singleton, Brendan D. Murray
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Patent number: 5475159Abstract: This invention relates to a process for the direct hydrogenation of methyl esters which comprises contacting and reacting one or more detergent range methyl esters with hydrogen under predominantly liquid phase hydrogenation conditions in the presence of a catalyst comprising a copper compound, a zinc compound, and at least one compound selected from the group consisting of aluminum, zirconium, magnesium, a rare earth and mixtures thereof.Type: GrantFiled: November 7, 1994Date of Patent: December 12, 1995Assignee: Shell Oil CompanyInventors: David M. Singleton, Brendan D. Murray
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Patent number: H1559Abstract: The present invention relates to light duty liquid detergent compositions containing one or more secondary alkyl sulfate surfactant components.Type: GrantFiled: August 25, 1993Date of Patent: July 2, 1996Assignee: Shell Oil CompanyInventors: Nelson E. Prieto, JanElsa E. Carty, Ruth J. Blanco, William W. Schmidt