Patents by Inventor Gary D. Mohr
Gary D. Mohr 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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Publication number: 20120039755Abstract: A method of treating a gas phase fluidized bed reactor and a method of polymerizing olefins in a gas phase fluidized bed reactor in the presence of a catalyst prone to cause sheeting by introducing a chromium-containing compound into the reactor and forming a high molecular weight polymer coating on the walls of the reactor. Furthermore, a device for and method of introducing the chromium-containing compound into the fluidized bed reactor at a plurality of locations in proximity to a lower section of a bed section wall of the fluidized bed reactor, and forming a high molecular weight polymer coating on the bed section wall.Type: ApplicationFiled: October 20, 2011Publication date: February 16, 2012Applicant: UNIVATION TECHNOLOGIES, LLCInventors: Agapios K. Agapiou, David M. Glowczwski, Zerong Lin, Gary D. Mohr, Ted A. Powell, Michael E. Sieloff, Edward F. Smith, Kevin B. Stavens, Keith W. Trapp, Michael E. Muhle, F. David Hussein
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Patent number: 8088870Abstract: A method for treating at least one interior surface (for example, a bed wall) of a fluidized bed polymerization reactor system, including by applying a solution catalyst (preferably at least substantially uniformly and in liquid form) to each surface, and optionally (where a catalyst component of the solution catalyst comprises at least one chromium containing compound) oxidizing at least some of the applied chromium containing compound in a controlled manner.Type: GrantFiled: February 21, 2008Date of Patent: January 3, 2012Assignee: Univation Technologies, LLCInventors: Robert O. Hagerty, Kevin B. Stavens, Randall B. Laird, Zerong Lin, Michael E. Muhle, Agapios K. Agapiou, David M. Glowczwski, Fathi D. Hussein, Gary D. Mohr, Ted A. Powell, Michael E. Sieloff, Edward F. Smith, Keith W. Trapp
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Patent number: 8084554Abstract: A method of treating a gas phase fluidized bed reactor and a method of polymerizing olefins in a gas phase fluidized bed reactor in the presence of a catalyst prone to cause sheeting by introducing a chromium-containing compound into the reactor and forming a high molecular weight polymer coating on the walls of the reactor. Furthermore, a device for and method of introducing the chromium-containing compound into the fluidized bed reactor at a plurality of locations in proximity to a lower section of a bed section wall of the fluidized bed reactor, and forming a high molecular weight polymer coating on the bed section wall.Type: GrantFiled: February 11, 2008Date of Patent: December 27, 2011Assignee: Univation Technologies, LLCInventors: Agapios K. Agapiou, David M. Glowczwski, Zerong Lin, Gary D. Mohr, Ted A. Powell, Michael E. Sieloff, Edward F. Smith, Kevin B. Stavens, Keith W. Trapp, Michael E. Muhle, F. David Hussein
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Patent number: 7875685Abstract: Apparatus and methods for gas phase polymerization are provided. The method can include polymerizing one or more olefins at gas phase conditions in a reactor comprising one or more process exposed surfaces in the presence of a catalyst system; and treating at least a portion of the one or more process exposed surfaces prior to injecting the catalyst system to reduce the number of surface hydroxyls or access of the catalyst system to the surface hydroxyls on the process exposed surfaces.Type: GrantFiled: November 7, 2007Date of Patent: January 25, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Kevin B. Stavens, Matthew W. Holtcamp, Gary D. Mohr, William A. Lamberti
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Publication number: 20100184927Abstract: A method for treating at least one interior surface (for example, a bed wall) of a fluidized bed polymerization reactor system, including by applying a solution catalyst (preferably at least substantially uniformly and in liquid form) to each surface, and optionally (where a catalyst component of the solution catalyst comprises at least one chromium containing compound) oxidizing at least some of the applied chromium containing compound in a controlled manner.Type: ApplicationFiled: February 21, 2008Publication date: July 22, 2010Applicant: UNIVATION TECHNOLOGIES, LLCInventors: Robert O. Hagerty, Kevin B. Stavens, Randall B. Laird, Zerong Lin, Michael E. Muhle, Agapios K. Agapiou, David M. Glowczwski, Fathi D. Hussein, Gary D. Mohr, Ted A. Powell, Michael E. Sieloff, Edward F. Smith, Keith W. Trapp
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Publication number: 20100076164Abstract: A method of treating a gas phase fluidized bed reactor and a method of polymerizing olefins in a gas phase fluidized bed reactor in the presence of a catalyst prone to cause sheeting by introducing a chromium-containing compound into the reactor and forming a high molecular weight polymer coating on the walls of the reactor. Furthermore, a device for and method of introducing the chromium-containing compound into the fluidized bed reactor at a plurality of locations in proximity to a lower section of a bed section wall of the fluidized bed reactor, and forming a high molecular weight polymer coating on the bed section wall.Type: ApplicationFiled: February 11, 2008Publication date: March 25, 2010Applicant: Univation Technologies, LLCInventors: Agapios K. Agapiou, David M. Glowczwski, Zerong Lin, Gary D. Mohr, Ted A. Powel, Michael E. Sieloff, Edward F. Smith, Kevin B. Stavens, Keith W. Trapp, Michael E. Muhle, F. David Hussein
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Patent number: 7655823Abstract: A process is provided for the production of xylenes from reformate. The process is carried out by methylating the benzene, toluene, or both present in the reformate to produce a resulting product having a higher xylenes content than the reformate. Greater than equilibrium amounts of para-xylene can be produced by the process.Type: GrantFiled: February 27, 2006Date of Patent: February 2, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Gary D. Mohr, John Scott Buchanan, Robert A. Crane, Jihad M. Dakka, Xiaobing Feng, Larry L. Iaccino, Shifang L. Luo
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Publication number: 20090118443Abstract: Apparatus and methods for gas phase polymerization are provided. The method can include polymerizing one or more olefins at gas phase conditions in a reactor comprising one or more process exposed surfaces in the presence of a catalyst system; and treating at least a portion of the one or more process exposed surfaces prior to injecting the catalyst system to reduce the number of surface hydroxyls or access of the catalyst system to the surface hydroxyls on the process exposed surfaces.Type: ApplicationFiled: November 7, 2007Publication date: May 7, 2009Inventors: Kevin B. Stavens, Matthew W. Holtcamp, Gary D. Mohr, William A. Lamberti
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Patent number: 7439204Abstract: A process for controlling the hydrogenation activity of a catalyst comprised of a crystalline molecular sieve and at least one hydrogenation metal selected from the group consisting of a Group VIIB metal, a Group VIII metal, and mixtures thereof. The process is carried out by contacting the catalyst with hydrogen under sufficient conditions of temperature and pressure and for sufficient time to reduce the hydrogenolysis activity of the catalyst. The catalyst prepared by the process finds application in the catalytic conversion of organic compounds, such as ethylbenzene dealkylation, xylenes isomerization, and the transalkylation of polyalkylaromatic hydrocarbons.Type: GrantFiled: March 15, 2004Date of Patent: October 21, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Timothy E. McMinn, Ronald J. Cimini, Robert A. Crane, Andrew M. Hiester, Teresa A. Jurgens-Kowal, Gary D. Mohr
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Patent number: 7396967Abstract: A process is provided for the production of xylenes from reformate. The process is carried out by methylating under conditions effective for the methylation, the benzene/toluene present in the reformate outside the reforming loop, to produce a resulting product having a higher xylenes content than the reformate. Greater than equilibrium amounts of para-xylene can be produced by the process.Type: GrantFiled: December 12, 2006Date of Patent: July 8, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Larry L. Iaccino, Jeevan S. Abichandani, John Scott Buchanan, Robert A. Crane, Jihad M. Dakka, Xiaobing Feng, Shifang L. Luo, Gary D. Mohr
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Patent number: 7393990Abstract: A method is provided for converting oxygenates, e.g., methanol, to olefins, e.g., ethylene and propylene, comprising contacting said oxygenates and an aromatics co-feed, e.g., xylenes, with a framework gallium-containing molecular sieve catalyst comprising pores having a size ranging from about 5.0 Angstroms to about 7.0 Angstroms, e.g., ZSM-5, under production conditions effective to produce olefins. A catalyst composition is also provided, comprising a ZSM-5 zeolite-bound ZSM-5 zeolite having a bound zeolite of framework Ga-containing zeolite having a Si/Ga molar ratio ranging from 5 to 500 and a binder of Ga-modified, e.g., Ga-exchanged and/or Ga-impregnated, zeolite having a Si/Ga molar ratio ranging from 5 to ?.Type: GrantFiled: June 26, 2001Date of Patent: July 1, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Teng Xu, Jeffrey L. White, Xiaobing Feng, Gary D. Mohr, Brenda A. Raich
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Patent number: 7271118Abstract: A catalyst system that exhibits a ratio of ethylene saturation to aromatics ring saturation of greater than 3,500. The catalyst system comprises two components and each component comprises a crystalline molecular sieve having a Constraint Index of from about 1 to about 12 and an effective amount of Group VIII metal. The catalyst system finds particular application in ethylbenzene conversion/xylenes isomerization reactions. The catalyst system can be prepared by incorporating the Group VIII metal into the molecular sieves by competitive ion exchange.Type: GrantFiled: July 29, 2004Date of Patent: September 18, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Brenda A. Raich, Robert A. Crane, Christine N. Elia, Teresa A. Jurgens-Kowal, Gary D. Mohr, David L. Stern
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Patent number: 7186873Abstract: A process is provided for the production of xylenes from reformate by reactive distillation. The process is carried out by methylating the benzene/toluene present in the reformate in a reactive distillation zone and under reactive distillation conditions to produce a resulting product having a higher xylenes content than the reformate. Greater than equilibrium amounts of para-xylene can be produced by the process.Type: GrantFiled: June 18, 2003Date of Patent: March 6, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Xiaobing Feng, John Scott Buchanan, Robert A. Crane, Jihad M. Dakka, Larry L. Iaccino, Gary D. Mohr
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Patent number: 7179367Abstract: A process for reforming wherein ethylbenzene formed during the reforming is converted to xylenes. The process is carried out by reforming a feed containing precursors of ethylbenzene with a reforming catalyst under conditions effective to reform said feed; wherein the reforming catalyst is contained in a reactor which contains a second catalyst effective under said conditions to convert ethylbenzene to xylenes. The resulting product contains reduced amounts of ethylbenzene and increased amounts of xylenes.Type: GrantFiled: July 1, 2003Date of Patent: February 20, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Xiaobing Feng, Jain-Kai Hung, Gary D. Mohr, Krishna Kulai Rao
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Patent number: 7176339Abstract: A process is provided for the production of xylenes from reformate. The process is carried out by methylating under conditions effective for the methylation, the benzene/toluene present in the reformate outside the reforming loop, to produce a resulting product having a higher xylenes content than the reformate. Greater than equilibrium amounts of para-xylene can be produced by the process.Type: GrantFiled: June 18, 2003Date of Patent: February 13, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Larry L. Iaccino, Jeevan S. Abichandani, John Scott Buchanan, Robert A. Crane, Jihad M. Dakka, Xiaobing Feng, Shifang L. Luo, Gary D. Mohr
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Patent number: 7119239Abstract: A process is provided for the production of xylenes from reformate. The process is carried out by methylating under conditions effective for the methylation, the benzene/toluene present in the reformate outside the reforming loop, to produce a resulting product having a higher xylenes content than the reformate. Greater than equilibrium amounts of para-xylene can be produced by the process.Type: GrantFiled: December 24, 2003Date of Patent: October 10, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: David L. Johnson, Robert G. Tinger, Robert A. Ware, John S. Buchanan, Xiaobing Feng, Shifang Luo, Gary D. Mohr
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Patent number: 7115538Abstract: An ethylbenzene conversion catalyst is described which comprises a molecular sieve and a hydrogenation metal, wherein the catalyst exhibits a benzene hydrogenation activity at 100° C. of less than about 100 and a metal dispersion, as measured by hydrogen chemisorption, greater than 0.4 and wherein the molecular sieve is steamed to an alpha value of less than 400 prior to incorporation of the palladium with the molecular sieve.Type: GrantFiled: December 4, 2002Date of Patent: October 3, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: John Scott Buchanan, Robert A. Crane, Doron Levin, Daria N. Lissy, Gary D. Mohr, David L. Stern
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Patent number: 7067052Abstract: A process for reforming a hydrocarbon feed containing precursors of ethylbenzene, e.g., C8 isoalkane and/or C8 isoalkene precursors of ethylbenzene, that results in the formation of reduced amounts of ethylbenzene. The process is carried out in a catalytic reforming unit comprised of a plurality of operatively connected reactors comprising at least one lead reforming reactor and a tail reforming reactor. The process is carried out by reforming the feed in at least one lead reactor which contains a first reforming catalyst and a catalyst effective for converting ethylbenzene and further reforming the product of the lead reactor in the tail reactor that contains a second reforming catalyst.Type: GrantFiled: July 1, 2003Date of Patent: June 27, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jain-Kai Hung, Thomas H. Colle, Xiaobing Feng, Gary D. Mohr, Krishna Kulai Rao
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Patent number: 6977320Abstract: There is provided a zeolite bound zeolite catalyst which can be tailored to optimize its performance and a process for converting hydrocarbons utilizing the zeolite bound zeolite catalyst. The zeolite bound zeolite catalyst comprises a first zeolite and a binder comprising a second zeolite. The structure type of the second zeolite is different from the structure type of the first zeolite. The zeolite bound zeolite finds particular application in hydrocarbon conversion process, e.g., catalytic cracking, alkylation, disproportional of toluene, isomerization, and transalkylation reactions.Type: GrantFiled: April 19, 2002Date of Patent: December 20, 2005Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jannetje Maatje van den Berge, Gary D. Mohr, Johannes Petrus Verduijn
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Patent number: 6958305Abstract: There is provided a zeolite bound zeolite catalyst which can be tailored to optimize its performance and a process for converting hydrocarbons utilizing the zeolite bound zeolite catalyst. The zeolite bound zeolite catalyst comprises a first zeolite and a binder comprising a second zeolite. The structure type of the second zeolite is different from the structure type of the first zeolite. The zeolite bound zeolite finds particular application in hydrocarbon conversion process, e.g., catalytic cracking, alkylation, disproportional of toluene, isomerization, and transalkylation reactions.Type: GrantFiled: April 24, 2002Date of Patent: October 25, 2005Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jannetje Maatje van den Berge, Gary D. Mohr, Johannes Petrus Verduijn