Patents by Inventor Jose Fernando Cevallos-Candau
Jose Fernando Cevallos-Candau 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: 9975968Abstract: The invention relates to a system for the continuous polymerization of ?-olefin monomers comprising a reactor, a compressor, a cooling unit and an external pipe, wherein the reactor comprises a first outlet for a top recycle stream, wherein the system comprises apparatus, wherein the reactor comprises a first inlet for receiving a bottom recycle stream, wherein the reactor comprises an integral separator, wherein the first inlet of the integral separator is connected to a first outlet, wherein the first outlet for the liquid phase is connected to the second outlet of the reactor for the liquid phase, wherein the external pipe comprises a second inlet for receiving a solid polymerization catalyst, wherein the first outlet of the external pipe is connected to a second inlet of the reactor, wherein the reactor comprises a third outlet, wherein the system comprises a first inlet for receiving a feed.Type: GrantFiled: November 24, 2014Date of Patent: May 22, 2018Assignees: SABIC GLOBAL TECHNOLOGIES B.V., SAUDI BASIC INDUSTRIES CORPORATIONInventors: Yahya Banat, Jose Fernando Cevallos-Candau
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Patent number: 9637572Abstract: The invention relates to a process for the continuous polymerization of one or more a-olefin monomers of which at least one is ethylene or propylene comprising the steps of: (1) feeding the one or more a-olefins to a vertically extended reactor suitable for the continuous fluidized bed polymerization of one or more a-olefin monomers of which at least one is ethylene or propylene, which reactor is operable in condensed mode, wherein the reactor comprises a distribution plate and an integral gas/liquid separator located below the distribution plate, (2) withdrawing the polyolefin from the reactor (3) withdrawing fluids from the top of the reactor, (4) cooling the fluids to below their dew point, resulting in a bottom recycle stream, (5) introducing the bottom recycle stream under the distribution plate, (6) separating at least part of the liquid from the bottom recycle stream using the integral separator to form a liquid phase and a gas/liquid phase, (7) feeding the liquid phase to an external pipe, (8) addingType: GrantFiled: November 24, 2014Date of Patent: May 2, 2017Assignees: SABIC GLOBAL TECHNOLOGIES B.V., SAUDI BASIC INDUSTRIES CORPORATIONInventors: Yahya Banat, Jose Fernando Cevallos-Candau
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Patent number: 9611342Abstract: The invention relates to a multi-zone reactor for the continuous fluidized bed polymerization of one or more ?-olefin monomers of which at least one is ethylene or propylene, which multi-zone reactor is operable in condensed mode, which multi-zone reactor comprises a first zone, a second zone, a third zone, a fourth zone and a distribution plate, wherein the second zone contains an inner wall, wherein the third zone contains an inner wall, wherein at least part of the inner wall of the third zone is either in the form of a gradually increasing inner diameter or a continuously opening cone, wherein the diameter or the opening increases in the vertical direction towards the top of the multi-zone reactor, wherein the largest diameter of the inner wall of the third zone is larger than the largest diameter of the inner wall of the second zone.Type: GrantFiled: November 24, 2014Date of Patent: April 4, 2017Assignees: SABIC GLOBAL TECHNOLOGIES B.V., SAUDI BASIC INDUSTRIES CORPORATIONInventors: Yahya Banat, Jose Fernando Cevallos-Candau
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Publication number: 20170002113Abstract: The invention relates to a system for the continuous polymerization of ?-olefin monomers comprising a reactor, a compressor, a cooling unit and an external pipe, wherein the reactor comprises a first outlet for a top recycle stream, wherein the system comprises apparatus, wherein the reactor comprises a first inlet for receiving a bottom recycle stream, wherein the reactor comprises an integral separator, wherein the first inlet of the integral separator is connected to a first outlet, wherein the first outlet for the liquid phase is connected to the second outlet of the reactor for the liquid phase, wherein the external pipe comprises a second inlet for receiving a solid polymerization catalyst, wherein the first outlet of the external pipe is connected to a second inlet of the reactor, wherein the reactor comprises a third outlet, wherein the system comprises a first inlet for receiving a feed.Type: ApplicationFiled: November 24, 2014Publication date: January 5, 2017Inventors: Yahya Banat, Jose Fernando Cevallos-Candau
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Publication number: 20160297899Abstract: The invention relates to a process for the continuous polymerization ?-olefin monomers comprising: feeding the ?-olefins to a vertically extended reactor for the continuous fluidized bed polymerization of ?-olefin monomers, wherein the reactor comprises a distribution plate and an integral gas/liquid separator, withdrawing the polyolefin from the reactor, withdrawing fluids from the reactor, cooling the fluids to below their dew point, resulting in a bottom recycle stream, (5) introducing the bottom recycle stream, separating at least part of the liquid from the bottom recycle stream, feeding a liquid phase to an external pipe, adding a solid polymerization catalyst to the liquid phase in the external pipe and (9) feeding a slurry stream comprising the prepolymer and/or polymer into the reactor, wherein the prepolymer and/or polymer are present in the slurry stream in an amount of 0.01 to 99 wt % based on the total slurry stream upon introduction into the reactor.Type: ApplicationFiled: November 24, 2014Publication date: October 13, 2016Inventors: Yahya Banat, Jose Fernando Cevallos-Candau
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Publication number: 20160297900Abstract: The invention relates to a multi-zone reactor for the continuous fluidized bed polymerization of one or more ?-olefin monomers of which at least one is ethylene or propylene, which multi-zone reactor is operable in condensed mode, which multi-zone reactor comprises a first zone, a second zone, a third zone, a fourth zone and a distribution plate, wherein the second zone contains an inner wall, wherein the third zone contains an inner wall, wherein at least part of the inner wall of the third zone is either in the form of a gradually increasing inner diameter or a continuously opening cone, wherein the diameter or the opening increases in the vertical direction towards the top of the multi-zone reactor, wherein the largest diameter of the inner wall of the third zone is larger than the largest diameter of the inner wall of the second zone.Type: ApplicationFiled: November 24, 2014Publication date: October 13, 2016Inventors: Yahya Banat, Jose Fernando Cevallos-Candau
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Publication number: 20150119538Abstract: The invention relates to a process for the production of polyethylene by gas phase polymerisation of ethylene in the presence of a supported chromium oxide based catalyst which is modified with an amino alcohol wherein the molar ratio of amino alcohol:chromium ranges between 0.5:1 and 1:1, wherein the support is silica having a surface area (SA) between 250 m2/g and 400 m2/g and a pore volume (PV) between 1.1 cm3/g and less than 2.0 cm3/g and wherein the amount of chromium in the supported catalyst is at least 0.1% by weight and less than 0.5% by weight.Type: ApplicationFiled: June 11, 2013Publication date: April 30, 2015Applicant: Saudi Basic Industries CorporationInventors: Vugar O. Aliyev, Jose Fernando Cevallos-Candau
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Publication number: 20130337210Abstract: The disclosed process is for the production of polyethylene by gas phase polymerisation of ethylene in the presence of a supported chromium oxide based catalyst which is modified with an amino alcohol wherein the molar ratio of amino alcohol:chromium ranges between 0.5:1 and 1:1, wherein the support is silica having a surface area (SA) between 250 m2/g and 400 m2/g and a pore volume (PV) between 1.1 cm3/g and less than 2.0 cm3/g and wherein the amount of chromium in the supported catalyst is at least 0.1% by weight and less than 0.5% by weight.Type: ApplicationFiled: June 14, 2013Publication date: December 19, 2013Inventors: Vugar O. Aliyev, Jose Fernando Cevallos-Candau
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Patent number: 8420754Abstract: The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times.Type: GrantFiled: November 11, 2010Date of Patent: April 16, 2013Assignee: Univation Technologies, LLCInventors: Kevin J Cann, Minghui Zhang, Jose Fernando Cevallos-Candau, John Moorhouse, Mark Gregory Goode, Daniel Paul Zilker, Jr., Maria Apecetche
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Publication number: 20110060111Abstract: The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times.Type: ApplicationFiled: November 11, 2010Publication date: March 10, 2011Applicant: UNIVATION TECHNOLOGIES, LLCInventors: Kevin J. Cann, Minghui Zhang, Jose Fernando Cevallos-Candau, John Moorhouse, Mark Gregory Goode, Daniel Paul Zilker, JR., Maria Apecetche
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Publication number: 20090312506Abstract: The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times.Type: ApplicationFiled: June 23, 2009Publication date: December 17, 2009Applicant: UNIVATION TECHNOLOGIES, LLC.Inventors: Kevin J. Cann, Minghui Zhang, Jose Fernando Cevallos-Candau, John H. Moorhouse, Mark G. Goode, Daniel P. Zilker, JR., Maria Apecetche
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Patent number: 7563851Abstract: The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times.Type: GrantFiled: August 11, 2005Date of Patent: July 21, 2009Assignee: Univation Technologies, LLCInventors: Kevin J Cann, Minghui Zhang, Jose Fernando Cevallos-Candau, John Moorhouse, Mark Gregory Goode, Daniel Paul Zilker, Jr., Maria Apecetche
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Patent number: 7504463Abstract: The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times.Type: GrantFiled: August 11, 2005Date of Patent: March 17, 2009Assignee: Univation Technologies, LLCInventors: Kevin J Cann, Minghui Zhang, Jose Fernando Cevallos-Candau, John Moorhouse, Mark Gregory Goode, Daniel Paul Zilker, Jr., Maria Apecetche
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Patent number: 7202313Abstract: A process for polymerizing polyethylene with chromium-based catalysts wherein one or more supported chromium-based catalysts is mixed with mineral oil to form a slurry and the slurry is then introduced into a polymerization reactor, especially a gas-phase polymerization reactor.Type: GrantFiled: March 4, 2004Date of Patent: April 10, 2007Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Robert J. Jorgensen, Karen E. Breetz, Jose Fernando Cevallos-Candau, Dale A. Wright, Thomas E. Spriggs
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Patent number: 6989344Abstract: The present invention is directed to the use of aluminum alkyl activators and co-catalysts to improve the performance of chromium-based catalysts. The aluminum alkyls allow for the variable control of polymer molecular weight, control of side branching while possessing desirable productivities, and may be applied to the catalyst directly or separately to the reactor. Adding the alkyl aluminum compound directly to the reactor (in-situ) eliminates induction times.Type: GrantFiled: November 18, 2003Date of Patent: January 24, 2006Assignee: Univation Technologies, LLCInventors: Kevin J. Cann, Minghui Zhang, Jose Fernando Cevallos-Candau, John Moorhouse, Mark Gregory Goode, Daniel Paul Zilker, Jr., Maria Apecetche
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Patent number: 6841630Abstract: Processes for transitioning among polymerization catalyst systems, preferably catalyst systems, which are incompatible with each other. Particularly, processes for transitioning among olefin polymerization reactions utilizing silyl-chromate catalyst systems and metallocene catalyst systems.Type: GrantFiled: November 17, 2003Date of Patent: January 11, 2005Assignee: Univation Technologies, LLCInventors: Kersten Anne Terry, Mark Gregory Goode, Daniel E. Wente, John Chirillo, Jr., Simon Mawson, Jose Fernando Cevallos-Candau
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Publication number: 20040143076Abstract: Processes for transitioning among polymerization catalyst systems, preferably catalyst systems, which are incompatible with each other. Particularly, processes for transitioning among olefin polymerization reactions utilizing silyl-chromate catalyst systems and metallocene catalyst systems.Type: ApplicationFiled: November 17, 2003Publication date: July 22, 2004Inventors: Kersten Anne Terry, Mark Gregory Goode, Daniel E. Wente, John Chirillo, Simon Mawson, Jose Fernando Cevallos-Candau
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Patent number: 5783645Abstract: A colorable resin particle having an outer shell of a non-sticky polymer and an inner core of a sticky polymer produced in a gas phase fluidized bed reactor at or above the sticking temperature of the sticky polymer using a non-sticky prepolymerized catalyst and processes for producing the colorable resin and the non-sticky prepolymerized catalyst.Type: GrantFiled: June 18, 1996Date of Patent: July 21, 1998Assignee: Union Carbide Chemicals & Plastics Technology CorporationInventors: Edgar Chapman Baker, Jose Fernando Cevallos-Candau, Eric Allan Lucas, John Gregory Victor, Allan Noshay