Patents by Inventor John F. Szul
John F. Szul 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: 11945889Abstract: A bimodal ethylene-co-1-hexene copolymer consisting essentially of a higher molecular weight component and a lower molecular weight component and, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by a combination of high-load melt index, melt flow ratio, and melt elasticity properties. A blown film consisting essentially of the bimodal ethylene-co-1-hexene copolymer. A method of synthesizing the bimodal ethylene-co-1-hexene copolymer. A method of making the blown film. A manufactured article comprising the bimodal ethylene-co-1-hexene copolymer.Type: GrantFiled: June 7, 2019Date of Patent: April 2, 2024Assignee: Univation Technologies LLCInventors: Bo Liu, Joel D. Wieliczko, John F. Szul, Daudi A. Abe, Roger L. Kuhlman, Ayush A. Bafna, Timothy R. Lynn
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Patent number: 11891464Abstract: A compound of formula (1) as drawn in the description, wherein M is a Group 4 metal, one R is a silicon-containing organic solubilizing group, and the other R is a silicon-containing organic solubilizing group or a silicon-free organic solubilizing group. A method of synthesizing the compound (1). A solution of compound (1) in alkane solvent. A catalyst system comprising or made from compound (1) and an activator. A method of polymerizing an olefin monomer with the catalyst system.Type: GrantFiled: October 11, 2019Date of Patent: February 6, 2024Assignee: DOW GLOBAL TECHNOLOGIES LLCInventors: Bethany M. Neilson, Roger L. Kuhlman, Ian M. Munro, John F. Szul
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Patent number: 11859031Abstract: A compound of formula (1) as drawn herein, wherein M is a Group 4 metal and each R independently is a silicon-free organic solubilizing group. A method of synthesizing the compound (1). A solution of compound (1) in alkane solvent. A catalyst system comprising or made from compound (1) and an activator. A method of polymerizing an olefin monomer with the catalyst system.Type: GrantFiled: October 11, 2019Date of Patent: January 2, 2024Assignee: Dow Global Technologies LLCInventors: Bethany M. Neilson, Roger L Kuhlman, Ian M. Munro, John F. Szul
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Patent number: 11845855Abstract: A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.Type: GrantFiled: December 10, 2020Date of Patent: December 19, 2023Assignee: UNIVATION TECHNOLOGIES LLCInventors: Swapnil Chandak, Nitin Borse, Ayush A. Bafna, Yi Zhang, Timothy R. Lynn, Roger L. Kuhlman, John F. Szul
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Patent number: 11827725Abstract: A bimodal polyethylene composition, products made therefrom, methods of making and using same, and articles, including bottle caps and closures, containing same.Type: GrantFiled: March 22, 2019Date of Patent: November 28, 2023Assignee: Univation Technologies LLCInventors: Nitin Borse, Swapnil B. Chandak, Yi Zhang, Timothy R. Lynn, Roger L Kuhlman, John F. Szul
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Publication number: 20230303737Abstract: In various embodiments, a bimodal polyethylene may include a high molecular weight component and a low molecular weight component. The bimodal polyethylene may have a density of from 0.933 grams per centimeter (g/cm3) to 0.960 g/cm3, a melt index (I2) of from 0.3 decigrams per minute (dg/min) to 1.2 dg/min, a melt flow ratio (MFR21) greater than 80.0, a molecular weight distribution (Mw/Mn) greater than 10, a reverse comonomer distribution, and a shear thinning index of from 5.0 to 20.0. Methods for producing the bimodal polyethylene, articles manufactured from the bimodal polyethylene are also provided.Type: ApplicationFiled: July 7, 2021Publication date: September 28, 2023Applicant: Dow Global Technologies LLCInventors: Mohamed Esseghir, Chuan C. He, Mridula Kapur, Andrew T. Heitsch, Theo Geussens, John F. Szul
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Publication number: 20230272196Abstract: In various embodiments, a thermoplastic composition may comprise from 0.5 wt. % to 75.0 wt. % of recycled polyethylene comprising a blend of polyethylene recovered from post-consumer material, pre-consumer material, or combinations thereof, and from 25.0 wt. % to 99.5 wt. % of virgin raw polyethylene comprising unimodal polyethylene, bimodal polyethylene, or combinations thereof, wherein at least 90.0 wt. % of the thermoplastic composition is comprised of the post-consumer recycled polyethylene and the virgin raw polyethylene. Manufactured articles made from the thermoplastic composition, such as coated conductors, are also provided.Type: ApplicationFiled: July 7, 2021Publication date: August 31, 2023Applicant: Dow Global Technologies LLCInventors: Paul J. Brigandi, Mohamed Esseghir, Kumar N. Sanketh, Chuan C. He, Mridula Kapur, Andrew T. Heitsch, John F. Szul
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Publication number: 20230257498Abstract: A bimodal copolymer comprises on average at least 90 weight-percent units derived from ethylene and at least 0.05 weight percent units derived from an ?-olefin comonomer having from 4 to 10 carbon atoms, wherein the copolymer has the properties described herein.Type: ApplicationFiled: September 20, 2021Publication date: August 17, 2023Inventors: Bo Liu, John F. Szul, Chuan C. He, Roger L. Kuhlman, Timothy R. Lynn
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Publication number: 20230203218Abstract: Embodiments of the present disclosure directed towards converting a non-metallocene precatalyst into a productivity enhanced non-metallocene catalyst. As an example, the present disclosure provides a method of making an productivity enhanced non-metallocene catalyst, the method comprising combining a first non-metallocene precatalyst, an effective amount of an activator, and an effective amount of a productivity-increasing organic compound under conditions effective for the activator and the productivity-increasing organic compound to chemically convert the first non-metallocene precatalyst into the productivity enhanced non-metallocene catalyst; wherein the productivity-increasing organic compound is of formula (A), as detailed herein.Type: ApplicationFiled: May 28, 2021Publication date: June 29, 2023Applicant: Dow Global Technologies LLCInventors: Rhett A. Baillie, Bethany M. Neilson, Roger L. Kuhlman, John F. Szul
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Publication number: 20230151127Abstract: A method of making an attenuated-light-off hybrid catalyst, the method comprising combining a faster-light-off catalyst with an effective amount of a kinetics modifier compound of formula (A1), (B1), or (C1): R5—C?C—R6 (A1), (R5)2C?C?C(R6)2 (B1), or (R5)(R7)C?C(R6)(R7) (C1) as defined herein under effective reaction conditions to give an attenuated hybrid catalyst that exhibits an attenuated light-off kinetics profile (relative to that of the faster-light-off catalyst); wherein the faster-light-off catalyst has been made by activating a hybrid precatalyst (i.e., an unactivated “coordination entity” or “ligand-metal complex”) of structural formula (I): (Cp) (L)k(X)x (I) as defined herein; and related methods, compositions and uses.Type: ApplicationFiled: May 26, 2021Publication date: May 18, 2023Inventors: Bethany M. Neilson, Roger L. Kuhlman, Rhett A. Baillie, John F. Szul
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Publication number: 20230151126Abstract: A method of making an attenuated-light-off post-metallocene catalyst (“attenuated post-metallocene catalyst” or “attenuated P-M catalyst”), the method comprising combining a faster-light-off catalyst with an effective amount of a kinetics modifier compound of formula (A1), (B1), or (C1): R5—C?C—R6 (A1), (R5)2C?C?C(R6)2 (B1), or (R5)(R7)C?C(R6)(R7) (C1) as defined herein under effective reaction conditions to give an attenuated post-metallocene catalyst that exhibits an attenuated light-off kinetics profile (relative to that of the faster-light-off catalyst); wherein the faster-light-off catalyst has been made by activating a post-metallocene precatalyst (i.e., an unactivated “coordination entity” or “ligand-metal complex”) of structural formula (I): (D)dM(T)t(Q)q(X)x (I) as defined herein; and related methods, compositions and uses.Type: ApplicationFiled: May 26, 2021Publication date: May 18, 2023Inventors: Bethany M. Neilson, Roger L. Kuhlman, Rhett A. Baillie, John F. Szul
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Publication number: 20230146068Abstract: Provided are bimodal linear low density polyethylene copolymers (B-LLDPE copolymers) that have a combination of improved properties comprising at least one processability characteristic similar or better than that of an unblended monomodal ZN-LLDPE and a dart impact property similar or better than that of an unblended monomodal MCN-LLDPE. For the various aspects, the B-LLDPE copolymer has a density from 0.8900 to 0.9300 g/cm3; a melt index (I2) from 0.1 g/10 min. to 5 g/10 min.; a Mz from 600,000 to 1,200,000 g/mol; and a hexane extractables content present in a value of up to 2.6 wt. % as measured according to ASTM D-5227:95. The B-LLDPE copolymer can be further characterized by a first melt flow ratio (I21/I2) from 25 to 65 and a first molecular weight ratio (Mz/Mw) from 3.5 to 5.5.Type: ApplicationFiled: March 30, 2021Publication date: May 11, 2023Applicant: Dow Global Technologies LLCInventors: Swapnil B. Chandak, Nitin K. Borse, Roger L. Kuhlman, John F. Szul
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Publication number: 20230144520Abstract: A method of making an attenuated-light-off post-metallocene catalyst, the method comprising combining a faster-light-off catalyst with an effective amount of a kinetics modifier compound of formula (A1), (B1), or (C1): R5-C?C—R6 (A1), (R5)2C?C?C(R6)2 (B1), or (R5)(R7)C?C(R6)(R7) (C1) as defined herein under effective reaction conditions to give an attenuated post-metallocene catalyst that exhibits an attenuated light-off monomer uptake profile (relative to that of the faster-light-off catalyst); wherein the faster-light-off catalyst has been made by activating a post-metallocene precatalyst of structural formula (I) as defined herein; and related methods, compositions and uses.Type: ApplicationFiled: May 26, 2021Publication date: May 11, 2023Inventors: Bethany M. Neilson, Roger L. Kuhlman, Rhett A. Baillie, John F. Szul
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Publication number: 20230132152Abstract: A method of making an attenuated-light-off post-metallocene catalyst, the method comprising combining a faster-light-off catalyst with an effective amount of a kinetics modifier compound of formula (A1), (B1), or (C1): R5—C?C—R6 (A1), (R5)2C=C?C(R6)2 (B1), or (R5)(R7)C?C(R6)(R7)(C1) as defined herein under effective reaction conditions to give an attenuated post-metallocene catalyst that exhibits an attenuated light-off monomer uptake profile (relative to that of the faster-light-off catalyst); wherein the faster-light-off catalyst has been made by activating a post-metallocene precatalyst of structural formula (I) as defined herein; and related methods, compositions and uses.Type: ApplicationFiled: May 26, 2021Publication date: April 27, 2023Inventors: Rhett A. Baillie, Bethany M. Neilson, Roger L. Kuhlman, John F. Szul
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Publication number: 20230127331Abstract: Provided are bimodal linear low density polyethylene copolymers (B-LLDPE copolymers) that have a combination of improved properties comprising at least one processability characteristic similar or better than that of an unblended monomodal ZN-LLDPE and a dart impact property similar or better than that of an unblended monomodal MCN-LLDPE. For the various aspects, the B-LLDPE copolymer has a density from 0.8900 to 0.9300 g/cm3; a melt index (I2) from 0.1 g/10 min. to 5 g/10 min.; a Mz from 600,000 to 1,900,000 g/mol; and a SHI from 5.35 to 75 ?*(1.0)/?*(100). The B-LLDPE copolymer can be further characterized by a first melt flow ratio (I21/I2) from 32 to 140 and a first molecular weight ratio (Mz/Mw) from 4.5 to 11.Type: ApplicationFiled: March 30, 2021Publication date: April 27, 2023Applicant: Dow Global Technologies LLCInventors: Swapnil B. Chandak, Nitin K. Borse, Roger L. Kuhlman, John F. Szul
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Publication number: 20220411546Abstract: Embodiments provide bimodal polymerization catalyst systems comprising metallocene olefin polymerization catalysts and biphenylphenol polymerization catalysts made from biphenylphenol polymerization precatalysts of Formula I.Type: ApplicationFiled: November 4, 2020Publication date: December 29, 2022Applicant: Dow Global Technologies LLCInventors: Andrew J. Young, Roger L. Kuhlman, Angela I. Padilla-Acevedo, John F. Szul
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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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Publication number: 20220325083Abstract: A nucleating agent-free and LLDPE-free polyolefin composition for making films with enhanced barrier properties against water vapor and oxygen gas. Related aspects include formulations, manufactured articles, films, and methods.Type: ApplicationFiled: September 22, 2020Publication date: October 13, 2022Inventors: Nitin Borse, Swapnil B. Chandak, Ayush A. Bafna, Roger L. Kuhlman, Joel D. Wieliczko, John F. Szul, Chuan C. He, Charles D. Lester
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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