Patents by Inventor John H. Moorhouse
John H. Moorhouse 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: 11655316Abstract: Embodiments of the present disclosure are directed towards method for modifying a polymer flow index. As an example, a method for modifying a polymer flow index can include providing monomers to a polymerization reactor, providing a chromium catalyst to the polymerization reactor, and providing an active amount of a flow index modifier to the polymerization reactor, wherein the flow index modifier is selected from carbon dioxide, carbon monoxide, 2,4-hexadiene, and combinations thereof.Type: GrantFiled: December 16, 2020Date of Patent: May 23, 2023Assignee: Univation Technologies, LLCInventors: Charles D. Lester, Mark G. Goode, Timothy R. Lynn, Kevin J. Cann, John H. Moorhouse, William Albert Matthews, Kefu Sun, Francois Alexandre
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Patent number: 11459413Abstract: Polymerization process control methods for making polyethylene are provided. The process control methods include performing a polymerization reaction in a polymerization reactor to produce the polyethylene, where ethylene, and optionally one or more comonomers, in the polymerization reaction is catalyzed by an electron donor-free Ziegler-Natta catalyst and an alkyl aluminum co-catalyst. A melt flow ratio (I21/I2) of the polyethylene removed from the polymerization reactor is measured and an amount of long chain branching (LCB) of the polyethylene from the polymerization reactor is controlled by adjusting a weight concentration of the alkyl aluminum co-catalyst present in the polymerization reactor.Type: GrantFiled: September 26, 2017Date of Patent: October 4, 2022Assignee: Univation Technologies, LLCInventors: Wesley R. Mariott, Kevin J. Cann, John H. Moorhouse, Mark G. Goode, Thomas Oswald
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Patent number: 11299568Abstract: A system and method for charging a chromium-based catalyst to a mix vessel; introducing a reducing agent through an entrance arrangement into the mix vessel, and agitating a mixture of the chromium-based catalyst, the reducing agent, and a solvent in the mix vessel to promote contact of the reducing agent with the chromium-based catalyst to give a reduced chromium-based catalyst.Type: GrantFiled: November 10, 2020Date of Patent: April 12, 2022Assignee: Univation Technologies, LLCInventors: John H. Moorhouse, Kevin J. Cann, Mark G. Goode, Kevin R. Gross
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Patent number: 11267918Abstract: Disclosed herein are methods of controlling polymer properties in polymerization processes that use a chromium-based catalyst. An embodiment discloses a method of producing a polyolefin comprising: contacting a reaction mixture and a reduced chromium oxide catalyst in a gas-phase reactor to produce the polyolefin, wherein the reaction mixture comprises a monomer and a co-monomer; and changing a reaction temperature in the gas-phase reactor by about 1° C. or more whereby a gas molar ratio of the co-monomer to the monomer is changed by about 2% or more and a co-monomer content of the polyolefin at substantially constant density is changed by about 2% or more. Additional methods and compositions are also provided.Type: GrantFiled: January 7, 2019Date of Patent: March 8, 2022Assignee: Univation Technologies, LLCInventors: Mark G. Goode, Francois Alexandre, Kevin J. Cann, Barbara J. Kopp, William A. Matthews, John H. Moorhouse, Cliff R. Mure
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Publication number: 20210284768Abstract: Polymerization process control methods for making polyethylene are provided. The process control methods include performing a polymerization reaction in a polymerization reactor to produce the polyethylene, where ethylene, and optionally one or more comonomers, in the polymerization reaction is catalyzed by an electron donor-free Ziegler-Natta catalyst and an alkyl aluminum co-catalyst. A melt flow ratio (I21/I2) of the polyethylene removed from the polymerization reactor is measured and an amount of long chain branching (LCB) of the polyethylene from the polymerization reactor is controlled by adjusting a weight concentration of the alkyl aluminum co-catalyst present in the polymerization reactor.Type: ApplicationFiled: September 26, 2017Publication date: September 16, 2021Applicant: Univation Technologies, LLCInventors: Wesley R. Mariott, Kevin J. Cann, John H. Moorhouse, Mark G. Goode, Thomas Oswald
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Publication number: 20210102016Abstract: Embodiments of the present disclosure are directed towards method for modifying a polymer flow index.Type: ApplicationFiled: December 16, 2020Publication date: April 8, 2021Applicant: Univation Technologies, LLCInventors: Charles D. Lester, Mark G. Goode, Timothy R. Lynn, Kevin J. Cann, John H. Moorhouse, William Albert Matthews, Kefu Sun, Francois Alexandre
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Publication number: 20210054123Abstract: A system and method for charging a chromium-based catalyst to a mix vessel; introducing a reducing agent through an entrance arrangement into the mix vessel, and agitating a mixture of the chromium-based catalyst, the reducing agent, and a solvent in the mix vessel to promote contact of the reducing agent with the chromium-based catalyst to give a reduced chromium-based catalyst.Type: ApplicationFiled: November 10, 2020Publication date: February 25, 2021Applicant: Univation Technologies, LLCInventors: John H. Moorhouse, Kevin J. Cann, Mark G. Goode, Kevin R. Gross
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Publication number: 20210016252Abstract: A method including contacting a chromium-based catalyst with a reducing agent in a solvent to lower an oxidation state of at least some chromium in the chromium-based catalyst to give a reduced chromium-based catalyst, drying the reduced chromium-based catalyst at a temperature, and adjusting the temperature to affect the flow index response of the reduced chromium-based catalyst.Type: ApplicationFiled: October 7, 2020Publication date: January 21, 2021Applicant: Univation Technologies, LLCInventors: Kevin J. Cann, Mark G. Goode, Kevin R. Gross, John H. Moorhouse
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Patent number: 10870720Abstract: A system and method for charging a chromium-based catalyst to a mix vessel; introducing a reducing agent through an entrance arrangement into the mix vessel, and agitating a mixture of the chromium-based catalyst, the reducing agent, and a solvent in the mix vessel to promote contact of the reducing agent with the chromium-based catalyst to give a reduced chromium-based catalyst.Type: GrantFiled: September 20, 2019Date of Patent: December 22, 2020Assignee: Univation Technologies, LLCInventors: John H. Moorhouse, Kevin J. Cann, Mark G. Goode, Kevin R. Gross
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Patent number: 10870719Abstract: Embodiments of the present disclosure are directed towards method for modifying a polymer flow index. As an example, a method for modifying a polymer flow index can include providing monomers to a polymerization reactor, providing a chromium catalyst to the polymerization reactor, and providing an active amount of a flow index modifier to the polymerization reactor, wherein the flow index modifier is selected from carbon dioxide, carbon monoxide, 2,4-hexadiene, and combinations thereof.Type: GrantFiled: April 17, 2017Date of Patent: December 22, 2020Assignee: Univation Technologies, LLCInventors: Charles D. Lester, Mark G. Goode, Timothy R. Lynn, Kevin J. Cann, John H. Moorhouse, William Albert Matthews, Kefu Sun, Francois Alexandre
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Patent number: 10835890Abstract: A method including contacting a chromium-based catalyst with a reducing agent in a solvent to lower an oxidation state of at least some chromium in the chromium-based catalyst to give a reduced chromium-based catalyst, drying the reduced chromium-based catalyst at a temperature, and adjusting the temperature to affect the flow index response of the reduced chromium-based catalyst.Type: GrantFiled: September 1, 2015Date of Patent: November 17, 2020Assignee: Univation Technologies, LLCInventors: Kevin J. Cann, Mark G. Goode, Kevin R. Gross, John H. Moorhouse
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Patent number: 10745501Abstract: A system and method for feeding a chromium-based catalyst to a polymerization reactor; adding a reducing agent to the chromium-based catalyst, and polymerizing an olefin into a polyolefin in the polymerization reactor in the presence of the chromium-based catalyst.Type: GrantFiled: August 31, 2018Date of Patent: August 18, 2020Assignee: Univation Technologies, LLCInventors: Kevin R. Gross, Kevin J. Cann, Mark G. Goode, John H. Moorhouse
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Publication number: 20200010590Abstract: A system and method for charging a chromium-based catalyst to a mix vessel; introducing a reducing agent through an entrance arrangement into the mix vessel, and agitating a mixture of the chromium-based catalyst, the reducing agent, and a solvent in the mix vessel to promote contact of the reducing agent with the chromium-based catalyst to give a reduced chromium-based catalyst.Type: ApplicationFiled: September 20, 2019Publication date: January 9, 2020Applicant: Univation Technologies, LLCInventors: John H. Moorhouse, Kevin J. Cann, Mark G. Goode, Kevin R. Gross
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Patent number: 10513572Abstract: Polymerization process control methods for making polyethylene are provided. The process control methods include performing a polymerization reaction in a polymerization reactor to produce the polyethylene, where ethylene, and optionally one or more comonomers, in the polymerization reaction is catalyzed by an electron donor-free Ziegler-Natta catalyst and an alkyl aluminum co-catalyst. A melt flow ratio (I21/I2) of the polyethylene removed from the polymerization reactor is measured and an amount of long chain branching (LCB) of the polyethylene from the polymerization reactor is controlled by adjusting a weight concentration of the alkyl aluminum co-catalyst present in the polymerization reactor.Type: GrantFiled: September 19, 2018Date of Patent: December 24, 2019Assignee: Univation Technologies, LLCInventors: Wesley R. Mariott, Kevin J. Cann, John H. Moorhouse, Mark G. Goode, Thomas Oswald
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Patent number: 10465026Abstract: A system and method for charging a chromium-based catalyst to a mix vessel; introducing a reducing agent through an entrance arrangement into the mix vessel, and agitating a mixture of the chromium-based catalyst, the reducing agent, and a solvent in the mix vessel to promote contact of the reducing agent with the chromium-based catalyst to give a reduced chromium-based catalyst.Type: GrantFiled: September 1, 2015Date of Patent: November 5, 2019Assignee: Univation Technologies, LLCInventors: John H. Moorhouse, Kevin J. Cann, Mark G. Goode, Kevin R. Gross
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Publication number: 20190161568Abstract: Disclosed herein are methods of controlling polymer properties in polymerization processes that use a chromium-based catalyst. An embodiment discloses a method of producing a polyolefin comprising: contacting a reaction mixture and a reduced chromium oxide catalyst in a gas-phase reactor to produce the polyolefin, wherein the reaction mixture comprises a monomer and a co-monomer; and changing a reaction temperature in the gas-phase reactor by about 1° C. or more whereby a gas molar ratio of the co-monomer to the monomer is changed by about 2% or more and a co-monomer content of the polyolefin at substantially constant density is changed by about 2% or more. Additional methods and compositions are also provided.Type: ApplicationFiled: January 7, 2019Publication date: May 30, 2019Applicant: Univation Technologies, LLCInventors: Mark G. Goode, Francois Alexandre, Kevin J. Cann, Barbara J. Kopp, William A. Matthews, John H. Moorhouse, Cliff R. Mure
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Publication number: 20190119416Abstract: Embodiments of the present disclosure are directed towards method for modifying a polymer flow index. As an example, a method for modifying a polymer flow index can include providing monomers to a polymerization reactor, providing a chromium catalyst to the polymerization reactor, and providing an active amount of a flow index modifier to the polymerization reactor, wherein the flow index modifier is selected from carbon dioxide, carbon monoxide, 2,4-hexadiene, and combinations thereof.Type: ApplicationFiled: April 17, 2017Publication date: April 25, 2019Applicant: Univation Technologies, LLCInventors: Charles D. Lester, Mark G. Goode, Timothy R. Lynn, Kevin J. Cann, John H. Moorhouse, William Albert Matthews, Kefu Sun, Francois Alexandre
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Patent number: 10266618Abstract: Modified chromium-based catalyst compositions for olefin polymerization are disclosed. The modifiers prevent or reduce catalyst particle aggregation providing improved catalyst particle dispersion and consistent flow index response of the compositions in olefin polymerization.Type: GrantFiled: November 23, 2015Date of Patent: April 23, 2019Assignee: Univation Technologies, LLCInventors: Kevin J. Cann, John H. Moorhouse, Parul A. Khokhani, Tomas T. Tamargo, Kevin R. Gross, Mark G. Goode
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Patent number: 10233270Abstract: Catalyst systems and methods for making and using the same. A method for making a catalyst support includes forming a mixture of a support material and a fluoride donor. The mixture is added to a fluidized bed reactor. The mixture is fluidized to form a fluidized bed while maintaining a flow rate of a fluidizing gas of about 0.1 ft./sec at less than about 370° C. and greater than about 0.35 ft./sec at temperatures greater than about 370° C. The mixture is calcined to decompose the fluoride donor, forming a fluorinated support.Type: GrantFiled: August 19, 2014Date of Patent: March 19, 2019Assignee: Univation Technologies, LLCInventors: John H. Moorhouse, Kevin J. Cann, Phuong A. Cao, Mark G. Goode, C. Jeff Harlan, Wesley R. Mariott
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Patent number: 10221263Abstract: A catalyst system for polymerizing olefin-based polymers and interpolymers is disclosed. The catalyst system may include a supported chromium catalyst and a Ziegler-Natta catalyst comprising a bulking agent, Mg, and Ti. The Ziegler-Natta catalysts in catalyst systems disclosed herein run exceptionally well without addition of excessive amounts of co-catalyst, thus allowing for use of chromium based supported catalysts that would otherwise be overwhelmed by aluminum alkyl. Further, embodiments disclosed herein may be run without an internal electron donor, and the lack of an internal electron donor in the system also prevents poisoning of the chromium catalysts by the internal electron donor. By including or co-feeding a chromium based catalyst with these Ziegler-Natta catalysts, it has been found that the molecular architecture of the resulting polyolefins, such as polyethylenes, may provide for resins with excellent processing properties.Type: GrantFiled: November 1, 2013Date of Patent: March 5, 2019Assignee: Univation Technologies, LLCInventors: Kevin J. Cann, Robert J. Jorgensen, Wesley R. Mariott, Mark G. Goode, John H. Moorhouse