Patents by Inventor R. Eric Pequeno
R. Eric Pequeno 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: 11396561Abstract: Embodiments of the present disclosure are directed towards methods for controlling a polymerization reaction including determining an instantaneous density model for a gas-phase polymerization, and utilizing the instantaneous density model to monitor the polymerization reaction to determine if a threshold instantaneous density is reached.Type: GrantFiled: March 20, 2019Date of Patent: July 26, 2022Assignee: Univation Technologies, LLCInventors: John F. Szul, Daniel N. Thomas, Eric J. Markel, R. Eric Pequeno, Bruce J. Savatsky
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Patent number: 11384164Abstract: Methods and systems for olefin polymerization are provided. The method for olefin polymerization can include flowing a catalyst through an injection nozzle and into a fluidized bed disposed within a reactor. The method can also include flowing a feed comprising one or more monomers, one or more inert fluids, or a combination thereof through the injection nozzle and into the fluidized bed. The feed can be at a temperature greater than ambient temperature. The method can also include contacting one or more olefins with the catalyst within the fluidized bed at conditions sufficient to produce a polyolefin.Type: GrantFiled: June 8, 2020Date of Patent: July 12, 2022Assignee: Univation Technologies, LLCInventors: Bruce J. Savatsky, R. Eric Pequeno
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Patent number: 11377460Abstract: Embodiments of the present disclosure are directed towards methods of adjusting melt index and/or density utilizing a metallocene complex represented by Formula (I): wherein each n-Pr is n-propyl, and each X is independently CH3, CI, Br, or F.Type: GrantFiled: March 20, 2019Date of Patent: July 5, 2022Assignee: Univation Technologies, LLCInventors: John F. Szul, E. J. Markel, R. Eric Pequeno, Bruce J. Savatsky
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Patent number: 11117991Abstract: Methods for olefin polymerization are described. The methods include a) forming a first polyolefin under a first set of polymerization conditions in the presence of a first catalyst composition and a first concentration of at least a first continuity additive composition, the first polyolefin composition having a target density, ?1, and a target Flow Index, FI1; and b) forming a second polyolefin composition under a second set of polymerization conditions in the presence of a second catalyst composition and a second concentration of a second continuity additive composition, the second polyolefin composition having a target density, ?2, and a target Flow Index, FI2; wherein the process is essentially free of providing a polymerization neutralizing composition between steps a) and b).Type: GrantFiled: August 5, 2019Date of Patent: September 14, 2021Assignee: Univation Technologies, LLCInventors: Bruce J. Savatsky, R. Eric Pequeno, Brandon C. Locklear
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Patent number: 10995161Abstract: The present disclosure provides a method of maintaining a target value of a melt flow index of a polyethylene polymer product being synthesized with a metallocene catalyst in a fluidized bed gas phase reactor. The method includes producing the polyethylene polymer product at the target value of the melt flow index with a metallocene catalyst in a fluidized bed gas phase reactor at a steady state in which the fluidized bed gas phase reactor is at a first reactor temperature and receives feeds of hydrogen and ethylene at a hydrogen to ethylene feed ratio at a first ratio value. When a change in reactor temperature is detected, the hydrogen to ethylene feed ratio is changed from the first ratio value to a second ratio value so as to maintain the melt flow index value of the polyethylene polymer product at the target value.Type: GrantFiled: June 6, 2018Date of Patent: May 4, 2021Assignee: Univation Technologies, LLCInventors: Bruce J. Savatsky, R. Eric Pequeno, Brandon C. Locklear, Jim Farley
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Publication number: 20210047355Abstract: Embodiments of the present disclosure are directed towards methods of adjusting melt index and/or density utilizing a metallocene complex represented by Formula (I): wherein each n-Pr is n-propyl, and each X is independently CH3, CI, Br, or F.Type: ApplicationFiled: March 20, 2019Publication date: February 18, 2021Applicant: Univation Technologies, LLCInventors: John F. Szul, E.J. Markel, R. Eric Pequeno, Bruce J. Savatsky
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Publication number: 20210047442Abstract: Embodiments of the present disclosure are directed towards methods for controlling a polymerization reaction including determining an instantaneous density model for a gas-phase polymerization, and utilizing the instantaneous density model to monitor the polymerization reaction to determine if a threshold instantaneous density is reached.Type: ApplicationFiled: March 20, 2019Publication date: February 18, 2021Applicant: Univation Technologies, LLCInventors: John F. Szul, Daniel Thomas, E.J. Markel, R. Eric Pequeno, Bruce J. Savatsky
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Publication number: 20200299418Abstract: Methods and systems for olefin polymerization are provided. The method for olefin polymerization can include flowing a catalyst through an injection nozzle and into a fluidized bed disposed within a reactor. The method can also include flowing a feed comprising one or more monomers, one or more inert fluids, or a combination thereof through the injection nozzle and into the fluidized bed. The feed can be at a temperature greater than ambient temperature. The method can also include contacting one or more olefins with the catalyst within the fluidized bed at conditions sufficient to produce a polyolefin.Type: ApplicationFiled: June 8, 2020Publication date: September 24, 2020Applicant: Univation Technologies, LLCInventors: Bruce J. Savatsky, R. Eric Pequeno
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Patent number: 10711072Abstract: Methods and systems for olefin polymerization are provided. The method for olefin polymerization can include flowing a catalyst through an injection nozzle and into a fluidized bed disposed within a reactor. The method can also include flowing a feed comprising one or more monomers, one or more inert fluids, or a combination thereof through the injection nozzle and into the fluidized bed. The feed can be at a temperature greater than ambient temperature. The method can also include contacting one or more olefins with the catalyst within the fluidized bed at conditions sufficient to produce a polyolefin.Type: GrantFiled: April 15, 2016Date of Patent: July 14, 2020Assignee: Univation Technologies, LLCInventors: Bruce J. Savatsky, R. Eric Pequeno
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Publication number: 20200140581Abstract: The present disclosure provides a method of maintaining a target value of a melt flow index of a polyethylene polymer product being synthesized with a metallocene catalyst in a fluidized bed gas phase reactor. The method includes producing the polyethylene polymer product at the target value of the melt flow index with a metallocene catalyst in a fluidized bed gas phase reactor at a steady state in which the fluidized bed gas phase reactor is at a first reactor temperature and receives feeds of hydrogen and ethylene at a hydrogen to ethylene feed ratio at a first ratio value. When a change in reactor temperature is detected, the hydrogen to ethylene feed ratio is changed from the first ratio value to a second ratio value so as to maintain the melt flow index value of the polyethylene polymer product at the target value.Type: ApplicationFiled: June 6, 2018Publication date: May 7, 2020Applicant: Univation Technologies, LLCInventors: Bruce J. Savatsky, R. Eric Pequeno, Brandon C. Locklear, Jim Farley
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Publication number: 20190352440Abstract: Methods for olefin polymerization are described. The methods include a) forming a first polyolefin under a first set of polymerization conditions in the presence of a first catalyst composition and a first concentration of at least a first continuity additive composition, the first polyolefin composition having a target density, ?1, and a target Flow Index, FI1; and b) forming a second polyolefin composition under a second set of polymerization conditions in the presence of a second catalyst composition and a second concentration of a second continuity additive composition, the second polyolefin composition having a target density, ?2, and a target Flow Index, FI2; wherein the process is essentially free of providing a polymerization neutralizing composition between steps a) and b).Type: ApplicationFiled: August 5, 2019Publication date: November 21, 2019Applicant: Univation Technologies, LLCInventors: Bruce J. Savatsky, R. Eric Pequeno, Brandon C. Locklear
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Patent number: 10400049Abstract: Methods for olefin polymerization are described. The methods include a) forming a first polyolefin under a first set of polymerization conditions in the presence of a first catalyst composition and a first concentration of at least a first continuity additive composition, the first polyolefin composition having a target density, 1, and a target Flow Index, FI1; and b) forming a second polyolefin composition under a second set of polymerization conditions in the presence of a second catalyst composition and a second concentration of a second continuity additive composition, the second polyolefin composition having a target density, 2, and a target Flow Index, FI2; wherein the process is essentially free of providing a polymerization neutralizing composition between steps a) and b).Type: GrantFiled: April 22, 2016Date of Patent: September 3, 2019Assignee: Univation Technologies, LLCInventors: Bruce J. Savatsky, R. Eric Pequeno, Brandon C. Locklear
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Patent number: 10308742Abstract: Polymers, and systems and methods for making and using the same are described herein. A polymer includes ethylene and at least one alpha olefin having from 4 to 20 carbon atoms. The polymer is formed by a trimmed catalyst system including a supported catalyst including bis(n-propylcyclopentadienyl) hafnium (R1)(R2) and a trim catalyst comprising meso-O(SiMe2Ind)2Zr(R1)(R2), wherein R1 and R2 are each, independently, methyl, chloro, fluoro, or a hydrocarbyl group.Type: GrantFiled: February 10, 2015Date of Patent: June 4, 2019Assignee: Univation Technologies, LLCInventors: Ching-Tai Lue, Francis C. Rix, Timothy M. Boller, Garth R. Giesbrecht, Mark G. Goode, Sun-Chueh Kao, Dongming Li, R. Eric Pequeno, Daniel P. Zilker, Jr.
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Patent number: 10221254Abstract: A method for transitioning a gas phase polymerization reactor between metallocene catalysts is provided. The method comprises first reducing the superficial gas velocity and increasing the height of the fluidized bed within the reactor prior to stopping a feed comprising a first metallocene catalyst. The method further comprises introducing a first polymerization neutralizer to the reactor, wherein the first polymerization reactor does not comprise water, and then introducing a second polymerization neutralizer to the reactor, wherein the second polymerization neutralizer is different from the first polymerization neutralizer. After this, the method comprises purging the reactor with an inert gas and then introducing a feed comprising a second metallocene catalyst to the reactor.Type: GrantFiled: April 6, 2016Date of Patent: March 5, 2019Assignee: Univation Technologies, LLCInventors: Brandon C. Locklear, R. Eric Pequeno, Richard B. Pannell, Fathi David Hussein, Rich John Stolz, William A. Matthews
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Methods of changing polyolefin production rate with the composition of the induced condensing agents
Patent number: 10174142Abstract: Polyolefin polymerization performed by contacting in a reactor an olefin monomer and optionally a comonomer with a catalyst system in the presence of induced condensing agents (ICA) and optionally hydrogen. The ICA may include two or more ICA components where the composition of the ICA (i.e., the concentration of each ICA component) may affect the polyolefin production rate. Changes to the relative concentration of the two or more ICA components may be according to ICA equivalency factors that allow for increasing the polyolefin production rate while maintain a sticking temperature, increasing polyolefin production rate while increasing the dew point approach temperature of the ICA, or a combination thereof.Type: GrantFiled: November 24, 2015Date of Patent: January 8, 2019Assignee: Univation Technologies, LLCInventors: Bruce J. Savatsky, Brandon C. Locklear, R. Eric Pequeno, Abarajith S. Hari, David M. Glowczwski -
Patent number: 9963528Abstract: Methods of making polyethylene resins are provided. More particularly methods of modifying the melt flow ratio and swell characteristics of polyethylene resins are provided.Type: GrantFiled: April 9, 2015Date of Patent: May 8, 2018Assignee: Univation Technologies, LLCInventors: R. Eric Pequeno, Bruce J. Savatsky, Peter S. Martin, Timothy R. Lynn
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Publication number: 20180118862Abstract: Methods for olefin polymerization are described. The methods include a) forming a first polyolefin under a first set of polymerization conditions in the presence of a first catalyst composition and a first concentration of at least a first continuity additive composition, the first polyolefin composition having a target density, 1, and a target Flow Index, FI1; and b) forming a second polyolefin composition under a second set of polymerization conditions in the presence of a second catalyst composition and a second concentration of a second continuity additive composition, the second polyolefin composition having a target density, 2, and a target Flow Index, FI2; wherein the process is essentially free of providing a polymerization neutralizing composition between steps a) and b).Type: ApplicationFiled: April 22, 2016Publication date: May 3, 2018Applicant: Univation Technologies, LLCInventors: Bruce J. Savatsky, R. Eric Pequeno, Brandon C. Locklear
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Publication number: 20180100031Abstract: Methods and systems for olefin polymerization are provided. The method for olefin polymerization can include flowing a catalyst through an injection nozzle and into a fluidized bed disposed within a reactor. The method can also include flowing a feed comprising one or more monomers, one or more inert fluids, or a combination thereof through the injection nozzle and into the fluidized bed. The feed can be at a temperature greater than ambient temperature. The method can also include contacting one or more olefins with the catalyst within the fluidized bed at conditions sufficient to produce a polyolefin.Type: ApplicationFiled: April 15, 2016Publication date: April 12, 2018Applicant: Univation Technologies, LLCInventors: Bruce J. Savatsky, R. Eric Pequeno
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Patent number: 9938361Abstract: Methods for producing catalyst systems with increased productivity are disclosed. The methods may comprise providing a catalyst composition comprising a solvent and a single-site catalyst component, heating an inert gas to a temperature in a range of from about 100° C. to about 150° C., and spray drying the catalyst composition in the presence of the inert gas to form a spray-dried catalyst system. Additionally, the methods may comprise providing a catalyst composition comprising a solvent, an activator, a filler material, a metallocene catalyst, and a Group 15-containing catalyst; heating an inert gas to a temperature in a range of from about 100° C. to about 150° C.; and spray drying the catalyst composition in the presence of the inert gas to form a spray-dried catalyst system.Type: GrantFiled: November 20, 2013Date of Patent: April 10, 2018Assignee: Univation Technologies, LLCInventors: Timothy R. Lynn, F. David Hussein, R. Eric Pequeno, Daniel P. Zilker, Jr., Bruce J. Savatsky, Michael D. Awe
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Publication number: 20180079836Abstract: A method for transitioning a gas phase polymerization reactor between metallocene catalysts is provided. The method comprises first reducing the superficial gas velocity and increasing the height of the fluidized bed within the reactor prior to stopping a feed comprising a first metallocene catalyst. The method further comprises introducing a first polymerization neutralizer to the reactor, wherein the first polymerization reactor does not comprise water, and then introducing a second polymerization neutralizer to the reactor, wherein the second polymerization neutralizer is different from the first polymerization neutralizer. After this, the method comprises purging the reactor with an inert gas and then introducing a feed comprising a second metallocene catalyst to the reactor.Type: ApplicationFiled: April 6, 2016Publication date: March 22, 2018Applicant: Univation Technologies, LLCInventors: Brandon C. Locklear, R. Eric Pequeno, Richard B. Pannell, Fathi David Hussein, Rich John Stolz, William A. Matthews