Patents by Inventor Wesley R. Mariott
Wesley R. Mariott 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: 11518825Abstract: Embodiments of the present disclosure are directed towards catalyst formulations including a metallocene and a stearic compound selected from bis 2-hydroxyethyl stearyl amine, aluminum distearate, and combinations thereof, where the metallocene is represented by the following formula: (Formula (I)) wherein each n-PR is n-propyl, and each X is independently CH3, Cl, or F.Type: GrantFiled: March 4, 2019Date of Patent: December 6, 2022Assignee: Univation Technologies, LLCInventors: Wesley R. Mariott, John F. Szul, Haiqing Peng, James M. Farley, Bruce J. Savatsky, Brandon C. Locklear
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Patent number: 11485802Abstract: A spray-dried zirconocene catalyst system comprising a zirconocene catalyst and a hydrophobic fumed silica, which supports the zirconocene catalyst. A spray-drying method of making same. Polyolefins; methods of making and using same; and articles containing same.Type: GrantFiled: March 22, 2019Date of Patent: November 1, 2022Assignee: Dow Global Technologies LLCInventors: Wesley R. Mariott, Roger L. Kuhlman, Phuong A. Cao, C. Dale Lester, Chuan He, Swapnil B. Chandak, Pradeep Jain, John F. Szul
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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: 11325927Abstract: An activated, titanium-based, spray-dried Ziegler-Natta catalyst system containing a titanium-based Ziegler-Natta catalyst, a carrier material, and an activator mixture comprising an effective amount of an activator mixture comprising triethylaluminum and diethylaluminum chloride for producing a substantially uniform comonomer composition distribution. Also, polyolefins; methods of making and using same; and articles containing same.Type: GrantFiled: December 3, 2018Date of Patent: May 10, 2022Assignee: UNIVATION TECHNOLOGIES, LLCInventors: Wesley R. Mariott, C. Dale Lester, Nitin Borse
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Patent number: 11325928Abstract: A modified spray-dried Ziegler-Natta (pro)catalyst system comprising a Ziegler-Natta (pro)catalyst, a carrier material, and a tetrahydrofuran/ethanol modifier; polyolefins; methods of making and using same; and articles containing same.Type: GrantFiled: December 3, 2018Date of Patent: May 10, 2022Inventors: Wesley R. Mariott, C. Dale Lester, Phuong A. Cao, Michael D. Awe, Nitin Borse
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Patent number: 11248066Abstract: Methods of making spray-dried Ziegler-Natta (pro)catalyst systems containing titanium Ziegler-Natta (pro)catalysts, a hydrophobic silica carrier material, and tetrahydrofuran. The spray-dried Ziegler-Natta (pro)catalyst systems made by the method. Methods of polymerizing olefin (co)monomer(s) with the spray-dried Ziegler-Natta catalyst system to make polyolefin polymers, and the polyolefin polymers made thereby.Type: GrantFiled: June 7, 2019Date of Patent: February 15, 2022Assignee: Univation Technologies, LLCInventors: Ian M. Munro, Wesley R. Mariott, C. Dale Lester, Nitin Borse, Michael D. Awe, Phuong A. Cao, Jesse C. Beilhart
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Patent number: 11193008Abstract: A method for increasing the melt strength of a polyolefin polymer composition is provided. The method includes mixing a first polyolefin composition derived from at least one olefin polymerization catalyst (a) and at least one olefin polymerization catalyst (b) with a second polyolefin composition derived from the at least one olefin polymerization catalyst (b) or from at least one olefin polymerization catalyst (c), and obtaining the polyolefin polymer composition.Type: GrantFiled: March 23, 2018Date of Patent: December 7, 2021Assignee: ExxonMobil Chemical Patents Inc.Inventors: Ching-Tai Lue, Mark K. Davis, Wesley R. Mariott, Daniel P. Zilker, Phuong A. Cao
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Patent number: 11180582Abstract: The present disclosure provides a method for improving the activity of Ziegler-Natta (ZN) catalysts. The method includes forming a modified precursor composition of a ZN catalyst by providing a precursor composition of the ZN catalyst for treatment with an aluminum alkyl compound in a liquid organic solvent. The precursor composition of the ZN catalyst includes at least one titanium compound. The at least one titanium compound in the precursor composition is treated with the aluminum alkyl compound in the liquid organic solvent, where the aluminum alkyl compound converts the at least one titanium compound in the precursor composition into a modified state of the ZN catalyst. At least a portion of the aluminum alkyl compound not consumed in converting the at least one titanium compound in the precursor composition into the modified state of the ZN catalyst and reaction by-product compounds in the liquid organic solvent are removed to form the modified precursor composition of the ZN catalyst.Type: GrantFiled: February 28, 2017Date of Patent: November 23, 2021Assignee: Univation Technologies, LLCInventors: Kevin J. Cann, Michael D. Awe, Wesley R. Mariott
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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: 20210230317Abstract: Methods of making spray-dried Ziegler-Natta (pro)catalyst systems containing titanium Ziegler-Natta (pro)catalysts, a hydrophobic silica carrier material, and tetrahydrofuran. The spray-dried Ziegler-Natta (pro)catalyst systems made by the method. Methods of polymerizing olefin (co)monomer(s) with the spray-dried Ziegler-Natta catalyst system to make polyolefin polymers, and the polyolefin polymers made thereby.Type: ApplicationFiled: June 7, 2019Publication date: July 29, 2021Inventors: Ian M. Munro, Wesley R. Mariott, C. Dale Lester, Nitin Borse, Michael D. Awe, Phuong A. Cao, Jesse C. Beilhart
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Publication number: 20210189024Abstract: The present disclosure provides a method for improving the activity of Ziegler-Natta (ZN) catalysts. The method includes forming a modified precursor composition of a ZN catalyst by providing a precursor composition of the ZN catalyst for treatment with an aluminum alkyl compound in a liquid organic solvent. The precursor composition of the ZN catalyst includes at least one titanium compound. The at least one titanium compound in the precursor composition is treated with the aluminum alkyl compound in the liquid organic solvent, where the aluminum alkyl compound converts the at least one titanium compound in the precursor composition into a modified state of the ZN catalyst. At least a portion of the aluminum alkyl compound not consumed in converting the at least one titanium compound in the precursor composition into the modified state of the ZN catalyst and reaction by-product compounds in the liquid organic solvent are removed to form the modified precursor composition of the ZN catalyst.Type: ApplicationFiled: February 28, 2017Publication date: June 24, 2021Applicant: Univation Technologies, LLCInventors: Kevin J. Cann, Michael D. Awe, Wesley R. Mariott
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Publication number: 20210115168Abstract: Embodiments of the present disclosure are directed towards catalyst formulations including a metallocene and a stearic compound selected from bis 2-hydroxyethyl stearyl amine, aluminum distearate, and combinations thereof, where the metallocene is represented by the following formula: (Formula (I)) wherein each n-PR is n-propyl, and each X is independently CH3, Cl, or F.Type: ApplicationFiled: March 4, 2019Publication date: April 22, 2021Applicant: Univation Technologies, LLCInventors: Wesley R. MARIOTT, John F. SZUL, Haiqing PENG, James M. FARLEY, Bruce J. SAVATSKY, Brandon C. LOCKLEAR
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Publication number: 20210032377Abstract: A spray-dried zirconocene catalyst system comprising a zirconocene catalyst and a hydrophobic fumed silica, which supports the zirconocene catalyst. A spray-drying method of making same. Polyolefins; methods of making and using same; and articles containing same.Type: ApplicationFiled: March 22, 2019Publication date: February 4, 2021Inventors: Wesley R. Mariott, Roger L. Kuhlman, Phuong A. Cao, C. Dale Lester, Chuan He, Swapnil B. Chandak, Pradeep Jain, John F. Szul
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Publication number: 20200369693Abstract: A modified spray-dried Ziegler-Natta (pro)catalyst system comprising a Ziegler-Natta (pro)catalyst, a carrier material, and a tetrahydrofuran/ethanol modifier; polyolefins; methods of making and using same; and articles containing same.Type: ApplicationFiled: December 3, 2018Publication date: November 26, 2020Inventors: Wesley R. Mariott, C. Dale Lester, Phuong A. Cao, Michael D Awe, Nitin Borse
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Patent number: 10676589Abstract: Catalyst systems and methods for making and using the same are provided. The catalyst system can include a catalyst support, wherein the catalyst support has an average particle size of about 2 microns to about 200 microns. Nanoparticles are adhered to the catalyst support, wherein the nanoparticles have an average particle size of about 2 to about 200 nanometers. A catalyst is supported on the catalyst support.Type: GrantFiled: March 19, 2019Date of Patent: June 9, 2020Assignee: Univation Technologies, LLCInventors: Yuanqiao Rao, Ping Cai, Kevin J. Cann, F. David Hussein, Wesley R. Mariott, Phuong A. Cao
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Patent number: 10676588Abstract: Catalyst systems and methods for making and using the same are provided. The catalyst system can include a catalyst support, wherein the catalyst support has an average particle size of about 2 microns to about 200 microns. Nanoparticles are adhered to the catalyst support, wherein the nanoparticles have an average particle size of about 2 to about 200 nanometers. A catalyst is supported on the catalyst support.Type: GrantFiled: March 19, 2019Date of Patent: June 9, 2020Assignee: Univation Technologies, LLCInventors: Yuanqiao Rao, Ping Cai, Kevin J. Cann, F. David Hussein, Wesley R. Mariott, Phuong A. Cao
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Patent number: 10597509Abstract: Catalyst systems and methods for making and using the same are provided. The catalyst system can include a catalyst support, wherein the catalyst support has an average particle size of about 2 microns to about 200 microns. Nanoparticles are adhered to the catalyst support, wherein the nanoparticles have an average particle size of about 2 to about 200 nanometers. A catalyst is supported on the catalyst support.Type: GrantFiled: March 19, 2019Date of Patent: March 24, 2020Assignee: Univation Technologies, LLCInventors: Yuanqiao Rao, Ping Cai, Kevin J. Cann, F. David Hussein, Wesley R. Mariott, Phuong A. Cao
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Publication number: 20200056026Abstract: A method for increasing the melt strength of a polyolefin polymer composition is provided. The method includes mixing a first polyolefin composition derived from at least one olefin polymerization catalyst (a) and at least one olefin polymerization catalyst (b) with a second polyolefin composition derived from the at least one olefin polymerization catalyst (b) or from at least one olefin polymerization catalyst (c), and obtaining the polyolefin polymer composition.Type: ApplicationFiled: March 23, 2018Publication date: February 20, 2020Inventors: Ching-Tai Lue, Mark K. Davis, Wesley R. Mariott, Daniel P, Ziiker, Pbuong A. Cao
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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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Publication number: 20190218364Abstract: Catalyst systems and methods for making and using the same are provided. The catalyst system can include a catalyst support, wherein the catalyst support has an average particle size of about 2 microns to about 200 microns. Nanoparticles are adhered to the catalyst support, wherein the nanoparticles have an average particle size of about 2 to about 200 nanometers. A catalyst is supported on the catalyst support.Type: ApplicationFiled: March 19, 2019Publication date: July 18, 2019Applicant: Univation Technologies, LLCInventors: Yuanqiao Rao, Ping Cai, Kevin J. Cann, F. David Hussein, Wesley R. Mariott, Phuong A. Cao