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).

  • Patent number: 11891464
    Abstract: 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: Grant
    Filed: October 11, 2019
    Date of Patent: February 6, 2024
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Bethany M. Neilson, Roger L. Kuhlman, Ian M. Munro, John F. Szul
  • Patent number: 11859031
    Abstract: 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: Grant
    Filed: October 11, 2019
    Date of Patent: January 2, 2024
    Assignee: Dow Global Technologies LLC
    Inventors: Bethany M. Neilson, Roger L Kuhlman, Ian M. Munro, John F. Szul
  • Patent number: 11845855
    Abstract: A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: December 19, 2023
    Assignee: UNIVATION TECHNOLOGIES LLC
    Inventors: Swapnil Chandak, Nitin Borse, Ayush A. Bafna, Yi Zhang, Timothy R. Lynn, Roger L. Kuhlman, John F. Szul
  • Patent number: 11827725
    Abstract: A bimodal polyethylene composition, products made therefrom, methods of making and using same, and articles, including bottle caps and closures, containing same.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: November 28, 2023
    Assignee: Univation Technologies LLC
    Inventors: Nitin Borse, Swapnil B. Chandak, Yi Zhang, Timothy R. Lynn, Roger L Kuhlman, John F. Szul
  • Publication number: 20230303737
    Abstract: 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: Application
    Filed: July 7, 2021
    Publication date: September 28, 2023
    Applicant: Dow Global Technologies LLC
    Inventors: Mohamed Esseghir, Chuan C. He, Mridula Kapur, Andrew T. Heitsch, Theo Geussens, John F. Szul
  • Publication number: 20230272196
    Abstract: 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: Application
    Filed: July 7, 2021
    Publication date: August 31, 2023
    Applicant: Dow Global Technologies LLC
    Inventors: Paul J. Brigandi, Mohamed Esseghir, Kumar N. Sanketh, Chuan C. He, Mridula Kapur, Andrew T. Heitsch, John F. Szul
  • Publication number: 20230257498
    Abstract: 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: Application
    Filed: September 20, 2021
    Publication date: August 17, 2023
    Inventors: Bo Liu, John F. Szul, Chuan C. He, Roger L. Kuhlman, Timothy R. Lynn
  • Publication number: 20230203218
    Abstract: 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: Application
    Filed: May 28, 2021
    Publication date: June 29, 2023
    Applicant: Dow Global Technologies LLC
    Inventors: Rhett A. Baillie, Bethany M. Neilson, Roger L. Kuhlman, John F. Szul
  • Publication number: 20230151127
    Abstract: 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: Application
    Filed: May 26, 2021
    Publication date: May 18, 2023
    Inventors: Bethany M. Neilson, Roger L. Kuhlman, Rhett A. Baillie, John F. Szul
  • Publication number: 20230151126
    Abstract: 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: Application
    Filed: May 26, 2021
    Publication date: May 18, 2023
    Inventors: Bethany M. Neilson, Roger L. Kuhlman, Rhett A. Baillie, John F. Szul
  • Publication number: 20230146068
    Abstract: 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: Application
    Filed: March 30, 2021
    Publication date: May 11, 2023
    Applicant: Dow Global Technologies LLC
    Inventors: Swapnil B. Chandak, Nitin K. Borse, Roger L. Kuhlman, John F. Szul
  • Publication number: 20230144520
    Abstract: 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: Application
    Filed: May 26, 2021
    Publication date: May 11, 2023
    Inventors: Bethany M. Neilson, Roger L. Kuhlman, Rhett A. Baillie, John F. Szul
  • Publication number: 20230132152
    Abstract: 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: Application
    Filed: May 26, 2021
    Publication date: April 27, 2023
    Inventors: Rhett A. Baillie, Bethany M. Neilson, Roger L. Kuhlman, John F. Szul
  • Publication number: 20230127331
    Abstract: 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: Application
    Filed: March 30, 2021
    Publication date: April 27, 2023
    Applicant: Dow Global Technologies LLC
    Inventors: Swapnil B. Chandak, Nitin K. Borse, Roger L. Kuhlman, John F. Szul
  • Publication number: 20220411546
    Abstract: Embodiments provide bimodal polymerization catalyst systems comprising metallocene olefin polymerization catalysts and biphenylphenol polymerization catalysts made from biphenylphenol polymerization precatalysts of Formula I.
    Type: Application
    Filed: November 4, 2020
    Publication date: December 29, 2022
    Applicant: Dow Global Technologies LLC
    Inventors: Andrew J. Young, Roger L. Kuhlman, Angela I. Padilla-Acevedo, John F. Szul
  • Patent number: 11518825
    Abstract: 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: Grant
    Filed: March 4, 2019
    Date of Patent: December 6, 2022
    Assignee: Univation Technologies, LLC
    Inventors: Wesley R. Mariott, John F. Szul, Haiqing Peng, James M. Farley, Bruce J. Savatsky, Brandon C. Locklear
  • Patent number: 11485802
    Abstract: 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: Grant
    Filed: March 22, 2019
    Date of Patent: November 1, 2022
    Assignee: Dow Global Technologies LLC
    Inventors: Wesley R. Mariott, Roger L. Kuhlman, Phuong A. Cao, C. Dale Lester, Chuan He, Swapnil B. Chandak, Pradeep Jain, John F. Szul
  • Publication number: 20220325083
    Abstract: 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: Application
    Filed: September 22, 2020
    Publication date: October 13, 2022
    Inventors: Nitin Borse, Swapnil B. Chandak, Ayush A. Bafna, Roger L. Kuhlman, Joel D. Wieliczko, John F. Szul, Chuan C. He, Charles D. Lester
  • Patent number: 11396561
    Abstract: 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: Grant
    Filed: March 20, 2019
    Date of Patent: July 26, 2022
    Assignee: Univation Technologies, LLC
    Inventors: John F. Szul, Daniel N. Thomas, Eric J. Markel, R. Eric Pequeno, Bruce J. Savatsky
  • Patent number: 11377460
    Abstract: 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: Grant
    Filed: March 20, 2019
    Date of Patent: July 5, 2022
    Assignee: Univation Technologies, LLC
    Inventors: John F. Szul, E. J. Markel, R. Eric Pequeno, Bruce J. Savatsky