Patents by Inventor Richard M. Buck

Richard M. Buck 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).

  • Publication number: 20240301099
    Abstract: Ethylene-based polymers having a melt index from 0.8 to 8 g/10 min, a density from 0.94 to 0.96 g/cm3, and a ratio of Mw/Mn from 6 to 20 are disclosed. These polymers can have one or more of an environmental stress crack resistance (ESCR) of at least 5,000 hr (condition A, 100% Igepal), an ESCR of at least 2,500 hr (condition A, 10% Igepal), a CY-a parameter from 0.35 to 0.53, a PSP2 value from 5 to 8.5, a tan ? at 0.1 sec?1 from 8 to 24 degrees, a Mz from 275,000 to 420,000 g/mol, an IVc from 2 to 3 dL/g, a strain hardening modulus (SHM) from 19 to 47 MPa, and/or an amount of polymer eluting between 93 and 95° C. in an ATREF profile of from 7 to 30 wt. %.
    Type: Application
    Filed: March 7, 2024
    Publication date: September 12, 2024
    Inventors: Zhou Chen, Richard M. Buck, Jon D. Ratzlaff, Jeffrey S. Fodor, Jim B. Askew
  • Patent number: 11859041
    Abstract: This disclosure provides new methods for the design and development of ethylene polymerization catalysts, including Group 4 metallocene catalysts such as zirconocenes, which are based on an improved ability to adjust co-monomer incorporation into the polymer. Computational analyses with and without dispersion corrections revealed that designing catalyst scaffolds which induce stabilizing non-covalent dispersion type interactions with incoming ?-olefin co-monomers can be used to modulate co-monomer selectivity into the polyethylene chain. Demonstrated herein is a lack of correlation of computed ??G‡ values against experimental ??G‡ values when the dispersion correction (D3BJ) was disabled, and B3LYP was used in the absence of Grimme's D3 dispersion and Becke-Johnson (BJ) dampening, but a correlation of computed against experimental ??G‡ with B3LYP+D3BJ, which are used to design new catalyst scaffolds.
    Type: Grant
    Filed: August 16, 2021
    Date of Patent: January 2, 2024
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Steven M. Bischof, Qing Yang, Orson L. Sydora, Graham R. Lief, Richard M Buck, Daniel H. Ess, Steven M. Maley
  • Patent number: 11735293
    Abstract: Methods for simultaneously determining the concentrations of transition metal compounds in solutions containing two or more transition metal compounds are described. Polymerization reactor systems providing real-time monitoring and control of the concentrations of the transition metal components of a multicomponent catalyst system are disclosed, as well as methods for operating such polymerization reactor systems, and for improving methods of preparing the multicomponent catalyst system.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: August 22, 2023
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Richard M. Buck, Qing Yang
  • Publication number: 20230098789
    Abstract: This disclosure provides new methods for the design and development of ethylene polymerization catalysts, including Group 4 metallocene catalysts such as zirconocenes, which are based on an improved ability to adjust co-monomer incorporation into the polymer. Computational analyses with and without dispersion corrections revealed that designing catalyst scaffolds which induce stabilizing non-covalent dispersion type interactions with incoming ?-olefin co-monomers can be used to modulate co-monomer selectivity into the polyethylene chain. Demonstrated herein is a lack of correlation of computed ??G‡ values against experimental ??G‡ values when the dispersion correction (D3BJ) was disabled, and B3LYP was used in the absence of Grimme's D3 dispersion and Becke-Johnson (BJ) dampening, but a correlation of computed against experimental ??G‡ with B3LYP+D3BJ, which are used to design new catalyst scaffolds.
    Type: Application
    Filed: August 16, 2021
    Publication date: March 30, 2023
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Steven M. Bischof, Qing Yang, Orson L. Sydora, Graham R. Lief, Richard M. Buck, Daniel H. Ess, Steven M. Maley
  • Patent number: 11300501
    Abstract: Methods for determining the catalytic activity of an activated chemically-treated solid oxide using a color measurement technique are described, and these methods are integrated into transition metal-based catalyst preparation processes and systems, as well as into olefin polymerization processes and related polymerization reactor systems.
    Type: Grant
    Filed: July 19, 2021
    Date of Patent: April 12, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Max P. McDaniel, Richard M. Buck, Tony R. Crain, Ryan N. Rose
  • Publication number: 20210391034
    Abstract: Methods for simultaneously determining the concentrations of transition metal compounds in solutions containing two or more transition metal compounds are described. Polymerization reactor systems providing real-time monitoring and control of the concentrations of the transition metal components of a multicomponent catalyst system are disclosed, as well as methods for operating such polymerization reactor systems, and for improving methods of preparing the multicomponent catalyst system.
    Type: Application
    Filed: August 30, 2021
    Publication date: December 16, 2021
    Inventors: Richard M. Buck, Qing Yang
  • Patent number: 11170874
    Abstract: Methods for simultaneously determining the concentrations of transition metal compounds in solutions containing two or more transition metal compounds are described. Polymerization reactor systems providing real-time monitoring and control of the concentrations of the transition metal components of a multicomponent catalyst system are disclosed, as well as methods for operating such polymerization reactor systems, and for improving methods of preparing the multicomponent catalyst system.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: November 9, 2021
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Richard M. Buck, Qing Yang
  • Patent number: 11125680
    Abstract: Methods for determining the catalytic activity of an activated chemically-treated solid oxide using a color measurement technique are described, and these methods are integrated into transition metal-based catalyst preparation processes and systems, as well as into olefin polymerization processes and related polymerization reactor systems.
    Type: Grant
    Filed: January 14, 2021
    Date of Patent: September 21, 2021
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Max P. McDaniel, Richard M. Buck, Tony R. Crain, Ryan N. Rose
  • Patent number: 10927201
    Abstract: Catalyst systems having both a metallocene catalyst component and a Ziegler-Natta component are disclosed. Such catalyst systems can contain a metallocene compound, an activator-support, an organoaluminum compound, and a Ziegler-Natta component comprising titanium supported on magnesium chloride.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: February 23, 2021
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Errun Ding, Chung C. Tso, Youlu Yu, Qing Yang, Richard M. Buck
  • Patent number: 10870094
    Abstract: Methods for simultaneously determining the concentrations of transition metal compounds in solutions containing two or more transition metal compounds are described. Polymerization reactor systems providing real-time monitoring and control of the concentrations of the transition metal components of a multicomponent catalyst system are disclosed, as well as methods for operating such polymerization reactor systems.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: December 22, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Richard M. Buck, Qing Yang
  • Publication number: 20200219591
    Abstract: Methods for simultaneously determining the concentrations of transition metal compounds in solutions containing two or more transition metal compounds are described. Polymerization reactor systems providing real-time monitoring and control of the concentrations of the transition metal components of a multicomponent catalyst system are disclosed, as well as methods for operating such polymerization reactor systems, and for improving methods of preparing the multicomponent catalyst system.
    Type: Application
    Filed: March 4, 2020
    Publication date: July 9, 2020
    Inventors: Richard M. Buck, Qing Yang
  • Patent number: 10697889
    Abstract: Methods for determining the concentration of transition metal compounds in a solution containing more than one transition metal compound are described. Polymerization reactor systems providing real-time monitoring and control of the concentrations of the transition metal components of a multicomponent catalyst system are disclosed, as well as methods for operating such polymerization reactor systems and for improving methods of preparing the multicomponent catalyst system.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: June 30, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Richard M. Buck
  • Patent number: 10679734
    Abstract: Methods for simultaneously determining the concentrations of transition metal compounds in solutions containing two or more transition metal compounds are described. Polymerization reactor systems providing real-time monitoring and control of the concentrations of the transition metal components of a multicomponent catalyst system are disclosed, as well as methods for operating such polymerization reactor systems, and for improving methods of preparing the multicomponent catalyst system.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: June 9, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Richard M. Buck, Qing Yang
  • Publication number: 20200023331
    Abstract: Methods for simultaneously determining the concentrations of transition metal compounds in solutions containing two or more transition metal compounds are described. Polymerization reactor systems providing real-time monitoring and control of the concentrations of the transition metal components of a multicomponent catalyst system are disclosed, as well as methods for operating such polymerization reactor systems.
    Type: Application
    Filed: September 30, 2019
    Publication date: January 23, 2020
    Inventors: Richard M. Buck, Qing Yang
  • Publication number: 20190382514
    Abstract: Catalyst systems having both a metallocene catalyst component and a Ziegler-Natta component are disclosed. Such catalyst systems can contain a metallocene compound, an activator-support, an organoaluminum compound, and a Ziegler-Natta component comprising titanium supported on magnesium chloride.
    Type: Application
    Filed: August 29, 2019
    Publication date: December 19, 2019
    Inventors: Errun Ding, Chung C. Tso, Youlu Yu, Qing Yang, Richard M. Buck
  • Patent number: 10507445
    Abstract: Methods for simultaneously determining the concentrations of transition metal compounds in solutions containing two or more transition metal compounds are described. Polymerization reactor systems providing real-time monitoring and control of the concentrations of the transition metal components of a multicomponent catalyst system are disclosed, as well as methods for operating such polymerization reactor systems.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: December 17, 2019
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Richard M. Buck, Qing Yang
  • Patent number: 10501567
    Abstract: Methods for determining the concentration of transition metal compounds in a solution containing more than one transition metal compound are described. Polymerization reactor systems providing real-time monitoring and control of the concentrations of the transition metal components of a multicomponent catalyst system are disclosed, as well as methods for operating such polymerization reactor systems.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: December 10, 2019
    Assignee: Chevron Philips Chemical Company LP
    Inventors: Qing Yang, Richard M. Buck
  • Patent number: 10435492
    Abstract: Catalyst systems having both a metallocene catalyst component and a Ziegler-Natta component are disclosed. Such catalyst systems can contain a metallocene compound, an activator-support, an organoaluminum compound, and a Ziegler-Natta component comprising titanium supported on magnesium chloride.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: October 8, 2019
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Errun Ding, Chung C. Tso, Youlu Yu, Qing Yang, Richard M. Buck
  • Publication number: 20190299183
    Abstract: Methods for simultaneously determining the concentrations of transition metal compounds in solutions containing two or more transition metal compounds are described. Polymerization reactor systems providing real-time monitoring and control of the concentrations of the transition metal components of a multicomponent catalyst system are disclosed, as well as methods for operating such polymerization reactor systems.
    Type: Application
    Filed: March 29, 2018
    Publication date: October 3, 2019
    Inventors: Richard M. Buck, Qing Yang
  • Publication number: 20190303539
    Abstract: Methods for simultaneously determining the concentrations of transition metal compounds in solutions containing two or more transition metal compounds are described. Polymerization reactor systems providing real-time monitoring and control of the concentrations of the transition metal components of a multicomponent catalyst system are disclosed, as well as methods for operating such polymerization reactor systems, and for improving methods of preparing the multicomponent catalyst system.
    Type: Application
    Filed: June 13, 2018
    Publication date: October 3, 2019
    Inventors: Richard M. Buck, Qing Yang