Patents by Inventor John T. Blagg

John T. Blagg 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: 11634567
    Abstract: Disclosed are ethylene polymer compositions containing a homogeneously-branched first ethylene polymer component and 15-35 wt. % of a homogeneously-branched second ethylene polymer component of higher density than the first ethylene polymer component. The ethylene polymer composition can be characterized by a density from 0.912 to 0.925 g/cm3, a ratio of Mw/Mn from 2 to 5, a melt index less than 2 g/10 min, and a CY-a parameter at 190° C. from 0.35 to 0.7. These polymer compositions have the excellent dart impact strength and optical properties of a metallocene-catalyzed LLDPE, but with improved machine direction tear resistance, and can be used in blown film and other end-use applications. Further, methods for improving film Elmendorf tear strength also are described.
    Type: Grant
    Filed: June 16, 2022
    Date of Patent: April 25, 2023
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Jeremy M. Praetorius, Chung Ching Tso, Ashish M. Sukhadia, Yongwoo Inn, Qing Yang, John T. Blagg
  • Publication number: 20220315744
    Abstract: Disclosed are ethylene polymer compositions containing a homogeneously-branched first ethylene polymer component and 15-35 wt. % of a homogeneously-branched second ethylene polymer component of higher density than the first ethylene polymer component. The ethylene polymer composition can be characterized by a density from 0.912 to 0.925 g/cm3, a ratio of Mw/Mn from 2 to 5, a melt index less than 2 g/10 min, and a CY-a parameter at 190° C. from 0.35 to 0.7. These polymer compositions have the excellent dart impact strength and optical properties of a metallocene-catalyzed LLDPE, but with improved machine direction tear resistance, and can be used in blown film and other end-use applications. Further, methods for improving film Elmendorf tear strength also are described.
    Type: Application
    Filed: June 16, 2022
    Publication date: October 6, 2022
    Inventors: Jeremy M. Praetorius, Chung Ching Tso, Ashish M. Sukhadia, Yongwoo Inn, Qing Yang, John T. Blagg
  • Patent number: 11427703
    Abstract: Disclosed are ethylene polymer compositions containing a homogeneously-branched first ethylene polymer component and 15-35 wt. % of a homogeneously-branched second ethylene polymer component of higher density than the first ethylene polymer component. The ethylene polymer composition can be characterized by a density from 0.912 to 0.925 g/cm3, a ratio of Mw/Mn from 2 to 5, a melt index less than 2 g/10 min, and a CY-a parameter at 190° C. from 0.35 to 0.7. These polymer compositions have the excellent dart impact strength and optical properties of a metallocene-catalyzed LLDPE, but with improved machine direction tear resistance, and can be used in blown film and other end-use applications. Further, methods for improving film Elmendorf tear strength also are described.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: August 30, 2022
    Assignee: Chevran Phillips Chemical Company LP
    Inventors: Jeremy M. Praetorius, Chung Ching Tso, Ashish M. Sukhadia, Yongwoo Inn, Qing Yang, John T. Blagg
  • Patent number: 11360011
    Abstract: This disclosure provides methods of predicting the steady state small scale critical temperatures (S4 Tc) of polymer resins and pipes therefrom.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: June 14, 2022
    Assignee: Chevron Phillips Chemical Company, LP
    Inventors: Elizabeth M. Lanier, Mark J. Lamborn, Brent A. Fiedler, Chung C. Tso, John T. Blagg, Alan E. Miller
  • Patent number: 11352471
    Abstract: Disclosed are ethylene polymer compositions containing a homogeneously-branched first ethylene polymer component and a homogeneously-branched second ethylene polymer component of higher density than the first ethylene polymer component. The ethylene polymer composition can be characterized by a density from 0.912 to 0.925 g/cm3, a melt index less than 3.5 g/10 min, and a CY-a parameter at 190° C. from 0.25 to 0.65. These polymer compositions have the excellent dart impact strength and optical properties of a metallocene-catalyzed LLDPE, but with improved machine direction tear resistance, and can be used in blown film and other end-use applications.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: June 7, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Jeremy M. Praetorius, Chung C. Tso, Qing Yang, Yongwoo Inn, John T. Blagg, Ashish M. Sukhadia
  • Patent number: 11332601
    Abstract: Disclosed are ethylene polymer compositions containing a homogeneously-branched first ethylene polymer component and 15-35 wt. % of a homogeneously-branched second ethylene polymer component of higher density than the first ethylene polymer component. The ethylene polymer composition can be characterized by a density from 0.912 to 0.925 g/cm3, a ratio of Mw/Mn from 2 to 5, a melt index less than 2 g/10 min, and a CY-a parameter at 190° C. from 0.35 to 0.7. These polymer compositions have the excellent dart impact strength and optical properties of a metallocene-catalyzed LLDPE, but with improved machine direction tear resistance, and can be used in blown film and other end-use applications. Further, methods for improving film Elmendorf tear strength also are described.
    Type: Grant
    Filed: April 2, 2020
    Date of Patent: May 17, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Jeremy M. Praetorius, Chung Ching Tso, Ashish M. Sukhadia, Yongwoo Inn, Qing Yang, John T. Blagg
  • Patent number: 11174378
    Abstract: Ethylene polymers having a density from 0.908 to 0.925 g/cm3, a melt index from 0.5 to 3 g/10 min, a ratio of Mw/Mn from 2 to 4, a ratio of Mz/Mw from 1.6 to 2.3, a CY-a parameter from 0.45 to 0.6, and an ATREF profile characterized by a single peak at a peak ATREF temperature from 76 to 88° C., and by less than 4.5 wt. % of the polymer eluting above a temperature of 91° C. These ethylene polymers can be used to produce various articles of manufacture, such as blown and cast films with a beneficial combination of high tear resistance and low haze.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: November 16, 2021
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Chung Ching Tso, Errun Ding, Randall S. Muninger, John T. Blagg, Yongwoo Inn, Max P. McDaniel, Ashish M. Sukhadia, Sarah Eppinger
  • Publication number: 20210253835
    Abstract: Ethylene polymers having a density from 0.908 to 0.925 g/cm3, a melt index from 0.5 to 3 g/10 min, a ratio of Mw/Mn from 2 to 4, a ratio of Mz/Mw from 1.6 to 2.3, a CY-a parameter from 0.45 to 0.6, and an ATREF profile characterized by a single peak at a peak ATREF temperature from 76 to 88° C., and by less than 4.5 wt. % of the polymer eluting above a temperature of 91° C. These ethylene polymers can be used to produce various articles of manufacture, such as blown and cast films with a beneficial combination of high tear resistance and low haze.
    Type: Application
    Filed: April 22, 2021
    Publication date: August 19, 2021
    Inventors: Chung Ching Tso, Errun Ding, Randall S. Muninger, John T. Blagg, Yongwoo Inn, Max P. McDaniel, Ashish M. Sukhadia, Sarah Eppinger
  • Patent number: 11028258
    Abstract: Ethylene polymers having a density from 0.908 to 0.925 g/cm3, a melt index from 0.5 to 3 g/10 min, a ratio of Mw/Mn from 2 to 4, a ratio of Mz/Mw from 1.6 to 2.3, a CY-a parameter from 0.45 to 0.6, and an ATREF profile characterized by a single peak at a peak ATREF temperature from 76 to 88° C., and by less than 4.5 wt. % of the polymer eluting above a temperature of 91° C. These ethylene polymers can be used to produce various articles of manufacture, such as blown and cast films with a beneficial combination of high tear resistance and low haze.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: June 8, 2021
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Chung Ching Tso, Errun Ding, Randall S. Muninger, John T. Blagg, Yongwoo Inn, Max P. McDaniel, Ashish M. Sukhadia, Sarah Eppinger
  • Publication number: 20210054178
    Abstract: Ethylene polymers having a density from 0.908 to 0.925 g/cm3, a melt index from 0.5 to 3 g/10 min, a ratio of Mw/Mn from 2 to 4, a ratio of Mz/Mw from 1.6 to 2.3, a CY-a parameter from 0.45 to 0.6, and an ATREF profile characterized by a single peak at a peak ATREF temperature from 76 to 88° C., and by less than 4.5 wt. % of the polymer eluting above a temperature of 91° C. These ethylene polymers can be used to produce various articles of manufacture, such as blown and cast films with a beneficial combination of high tear resistance and low haze.
    Type: Application
    Filed: August 19, 2019
    Publication date: February 25, 2021
    Inventors: Chung Ching Tso, Errun Ding, Randall S. Muninger, John T. Blagg, Yongwoo Inn, Max P. McDaniel, Ashish M. Sukhadia, Sarah Eppinger
  • Publication number: 20200308378
    Abstract: Disclosed are ethylene polymer compositions containing a homogeneously-branched first ethylene polymer component and 15-35 wt. % of a homogeneously-branched second ethylene polymer component of higher density than the first ethylene polymer component. The ethylene polymer composition can be characterized by a density from 0.912 to 0.925 g/cm3, a ratio of Mw/Mn from 2 to 5, a melt index less than 2 g/10 min, and a CY-a parameter at 190 ° C. from 0.35 to 0.7. These polymer compositions have the excellent dart impact strength and optical properties of a metallocene-catalyzed LLDPE, but with improved machine direction tear resistance, and can be used in blown film and other end-use applications. Further, methods for improving film Elmendorf tear strength also are described.
    Type: Application
    Filed: March 25, 2019
    Publication date: October 1, 2020
    Inventors: Jeremy M. Praetorius, Chung Ching Tso, Ashish M. Sukhadia, Yongwoo Inn, Qing Yang, John T. Blagg
  • Publication number: 20200308380
    Abstract: Disclosed are ethylene polymer compositions containing a homogeneously-branched first ethylene polymer component and 15-35 wt. % of a homogeneously-branched second ethylene polymer component of higher density than the first ethylene polymer component. The ethylene polymer composition can be characterized by a density from 0.912 to 0.925 g/cm3, a ratio of Mw/Mn from 2 to 5, a melt index less than 2 g/10 min, and a CY-a parameter at 190° C. from 0.35 to 0.7. These polymer compositions have the excellent dart impact strength and optical properties of a metallocene-catalyzed LLDPE, but with improved machine direction tear resistance, and can be used in blown film and other end-use applications. Further, methods for improving film Elmendorf tear strength also are described.
    Type: Application
    Filed: April 2, 2020
    Publication date: October 1, 2020
    Inventors: Jeremy M. Praetorius, Chung Ching Tso, Ashish M. Sukhadia, Yongwoo Inn, Qing Yang, John T. Blagg
  • Publication number: 20200109246
    Abstract: Disclosed are ethylene polymer compositions containing a homogeneously-branched first ethylene polymer component and a homogeneously-branched second ethylene polymer component of higher density than the first ethylene polymer component. The ethylene polymer composition can be characterized by a density from 0.912 to 0.925 g/cm3, a melt index less than 3.5 g/10 min, and a CY-a parameter at 190° C. from 0.25 to 0.65. These polymer compositions have the excellent dart impact strength and optical properties of a metallocene-catalyzed LLDPE, but with improved machine direction tear resistance, and can be used in blown film and other end-use applications.
    Type: Application
    Filed: December 9, 2019
    Publication date: April 9, 2020
    Inventors: Jeremy M. Praetorius, Chung C. Tso, Qing Yang, Yongwoo Inn, John T. Blagg, Ashish M. Sukhadia
  • Patent number: 10544273
    Abstract: Disclosed are ethylene polymer compositions containing a homogeneously-branched first ethylene polymer component and a homogeneously-branched second ethylene polymer component of higher density than the first ethylene polymer component. The ethylene polymer composition can be characterized by a density from 0.912 to 0.925 g/cm3, a melt index less than 3.5 g/10 min, and a CY-a parameter at 190° C. from 0.25 to 0.65. These polymer compositions have the excellent dart impact strength and optical properties of a metallocene-catalyzed LLDPE, but with improved machine direction tear resistance, and can be used in blown film and other end-use applications.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: January 28, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Jeremy M. Praetorius, Chung C. Tso, Qing Yang, Yongwoo Inn, John T. Blagg, Ashish M. Sukhadia
  • Publication number: 20190322823
    Abstract: Disclosed are ethylene polymer compositions containing a homogeneously-branched first ethylene polymer component and a homogeneously-branched second ethylene polymer component of higher density than the first ethylene polymer component. The ethylene polymer composition can be characterized by a density from 0.912 to 0.925 g/cm3, a melt index less than 3.5 g/10 min, and a CY-a parameter at 190° C. from 0.25 to 0.65. These polymer compositions have the excellent dart impact strength and optical properties of a metallocene-catalyzed LLDPE, but with improved machine direction tear resistance, and can be used in blown film and other end-use applications.
    Type: Application
    Filed: July 2, 2019
    Publication date: October 24, 2019
    Inventors: Jeremy M. Praetorius, Chung C. Tso, Qing Yang, Yongwoo Inn, John T. Blagg, Ashish M. Sukhadia
  • Patent number: 10435527
    Abstract: Disclosed are ethylene polymer compositions containing a homogeneously-branched first ethylene polymer component and a homogeneously-branched second ethylene polymer component of higher density than the first ethylene polymer component. The ethylene polymer composition can be characterized by a density from 0.912 to 0.925 g/cm3, a melt index less than 3.5 g/10 min, and a CY-a parameter at 190° C. from 0.25 to 0.65. These polymer compositions have the excellent dart impact strength and optical properties of a metallocene-catalyzed LLDPE, but with improved machine direction tear resistance, and can be used in blown film and other end-use applications.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: October 8, 2019
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Jeremy M. Praetorius, Chung C. Tso, Qing Yang, Yongwoo Inn, John T. Blagg, Ashish M. Sukhadia
  • Publication number: 20190107474
    Abstract: This disclosure provides methods of predicting the steady state small scale critical temperatures (S4 Tc) of polymer resins and pipes therefrom.
    Type: Application
    Filed: September 26, 2018
    Publication date: April 11, 2019
    Inventors: Elizabeth M. Lanier, Mark J. Lamborn, Brent A. Fiedler, Chung C. Tso, John T. Blagg, Alan E. Miller
  • Publication number: 20190092912
    Abstract: Disclosed are ethylene polymer compositions containing a homogeneously-branched first ethylene polymer component and a homogeneously-branched second ethylene polymer component of higher density than the first ethylene polymer component. The ethylene polymer composition can be characterized by a density from 0.912 to 0.925 g/cm3, a melt index less than 3.5 g/10 min, and a CY-a parameter at 190° C. from 0.25 to 0.65. These polymer compositions have the excellent dart impact strength and optical properties of a metallocene-catalyzed LLDPE, but with improved machine direction tear resistance, and can be used in blown film and other end-use applications.
    Type: Application
    Filed: September 26, 2017
    Publication date: March 28, 2019
    Inventors: Jeremy M. Praetorius, Chung C. Tso, Qing Yang, Yongwoo Inn, John T. Blagg, Ashish M. Sukhadia