Patents by Inventor Gary L. Glass

Gary L. Glass 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).

  • Production of high haze films using metallocene-based catalyst systems in cyclohexene
    Patent number: 10131725
    Abstract: Methods for preparing metallocene-based catalyst systems containing an activator-support are disclosed. These methods are directed to contacting an activator-support, an organoaluminum compound, and a mixture containing a metallocene compound and cyclohexene or a mixture of cyclohexane and 1-hexene, resulting in catalyst systems with increased catalytic activity for the polymerization of olefins. The olefin polymers can be used to produce film products with high haze values.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: November 20, 2018
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Kensha Marie Clark, Qing Yang, Gary L. Glass
  • Processes for preparing solid metallocene-based catalyst systems
    Patent number: 10059783
    Abstract: Methods for preparing metallocene-based catalyst systems containing an activator-support are disclosed. These methods can include contacting a solid metallocene compound, an activator-support, and an organoaluminum compound, resulting in catalyst systems with increased catalytic activity as compared to catalyst systems utilizing a solution of the metallocene compound.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: August 28, 2018
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Kensha M. Clark, Qing Yang, Gary L. Glass
  • Dual catalyst systems for producing polymers with a broad molecular weight distribution and a uniform short chain branch distribution
    Patent number: 10017592
    Abstract: Disclosed herein are ethylene-based polymers having a melt index less than 50 g/10 min, a ratio of Mw/Mn from 4 to 20, a density from 0.90 to 0.945 g/cm3, and a substantially constant short chain branch distribution. These polymers can be produced using a dual catalyst system containing a boron bridged metallocene compound with a cyclopentadienyl group and an indenyl group, and a single atom bridged metallocene compound with a fluorenyl group.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: July 10, 2018
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Jeff F. Greco, Max P. McDaniel, Youlu Yu, Gary L. Glass, Tony R. Crain
  • Production of High Haze Films Using Metallocene-Based Catalyst Systems in Cyclohexene
    Publication number: 20180066089
    Abstract: Methods for preparing metallocene-based catalyst systems containing an activator-support are disclosed. These methods are directed to contacting an activator-support, an organoaluminum compound, and a mixture containing a metallocene compound and cyclohexene or a mixture of cyclohexane and 1-hexene, resulting in catalyst systems with increased catalytic activity for the polymerization of olefins. The olefin polymers can be used to produce film products with high haze values.
    Type: Application
    Filed: November 9, 2017
    Publication date: March 8, 2018
    Inventors: Kensha Marie Clark, Qing Yang, Gary L. Glass
  • Processes for preparing metallocene-based catalyst systems in cyclohexene
    Patent number: 9884930
    Abstract: Methods for preparing metallocene-based catalyst systems containing an activator-support are disclosed. These methods are directed to contacting an activator-support, an organoaluminum compound, and a mixture containing a metallocene compound and cyclohexene or a mixture of cyclohexane and 1-hexene, resulting in catalyst systems with increased catalytic activity for the polymerization of olefins.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: February 6, 2018
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Kensha Marie Clark, Qing Yang, Gary L. Glass
  • Processes for Preparing Solid Metallocene-Based Catalyst Systems
    Publication number: 20170137547
    Abstract: Methods for preparing metallocene-based catalyst systems containing an activator-support are disclosed. These methods can include contacting a solid metallocene compound, an activator-support, and an organoaluminum compound, resulting in catalyst systems with increased catalytic activity as compared to catalyst systems utilizing a solution of the metallocene compound.
    Type: Application
    Filed: February 1, 2017
    Publication date: May 18, 2017
    Inventors: Kensha M. Clark, Qing Yang, Gary L. Glass
  • Dual Catalyst Systems for Producing Polymers with a Broad Molecular Weight Distribution and a Uniform Short Chain Branch Distribution
    Publication number: 20170114169
    Abstract: Disclosed herein are ethylene-based polymers having a melt index less than 50 g/10 min, a ratio of Mw/Mn from 4 to 20, a density from 0.90 to 0.945 g/cm3, and a substantially constant short chain branch distribution. These polymers can be produced using a dual catalyst system containing a boron bridged metallocene compound with a cyclopentadienyl group and an indenyl group, and a single atom bridged metallocene compound with a fluorenyl group.
    Type: Application
    Filed: January 4, 2017
    Publication date: April 27, 2017
    Inventors: Qing Yang, Jeff F. Greco, Max P. McDaniel, Youlu Yu, Gary L. Glass, Tony R. Crain
  • Processes for preparing solid metallocene-based catalyst systems
    Patent number: 9598515
    Abstract: Methods for preparing metallocene-based catalyst systems containing an activator-support are disclosed. These methods can include contacting a solid metallocene compound, an activator-support, and an organoaluminum compound, resulting in catalyst systems with increased catalytic activity as compared to catalyst systems utilizing a solution of the metallocene compound.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: March 21, 2017
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Kensha M. Clark, Qing Yang, Gary L. Glass
  • Dual catalyst systems for producing polymers with a broad molecular weight distribution and a uniform short chain branch distribution
    Patent number: 9574031
    Abstract: Disclosed herein are ethylene-based polymers having a melt index less than 50 g/10 min, a ratio of Mw/Mn from 4 to 20, a density from 0.90 to 0.945 g/cm3, and a substantially constant short chain branch distribution. These polymers can be produced using a dual catalyst system containing a boron bridged metallocene compound with a cyclopentadienyl group and an indenyl group, and a single atom bridged metallocene compound with a fluorenyl group.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: February 21, 2017
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Jeff F. Greco, Max P. McDaniel, Youlu Yu, Gary L. Glass, Tony R. Crain
  • Processes for Preparing Metallocene-Based Catalyst Systems in Cyclohexene
    Publication number: 20170002122
    Abstract: Methods for preparing metallocene-based catalyst systems containing an activator-support are disclosed. These methods are directed to contacting an activator-support, an organoaluminum compound, and a mixture containing a metallocene compound and cyclohexene or a mixture of cyclohexane and 1-hexene, resulting in catalyst systems with increased catalytic activity for the polymerization of olefins.
    Type: Application
    Filed: September 19, 2016
    Publication date: January 5, 2017
    Inventors: Kensha Marie Clark, Qing Yang, Gary L. Glass
  • Processes for preparing metallocene-based catalyst systems in cyclohexene
    Patent number: 9481749
    Abstract: Methods for preparing metallocene-based catalyst systems containing an activator-support are disclosed. These methods are directed to contacting an activator-support, an organoaluminum compound, and a mixture containing a metallocene compound and cyclohexene or a mixture of cyclohexane and 1-hexene, resulting in catalyst systems with increased catalytic activity for the polymerization of olefins.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: November 1, 2016
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Kensha Marie Clark, Qing Yang, Gary L. Glass
  • Processes for Preparing Solid Metallocene-Based Catalyst Systems
    Publication number: 20160168284
    Abstract: Methods for preparing metallocene-based catalyst systems containing an activator-support are disclosed. These methods can include contacting a solid metallocene compound, an activator-support, and an organoaluminum compound, resulting in catalyst systems with increased catalytic activity as compared to catalyst systems utilizing a solution of the metallocene compound.
    Type: Application
    Filed: February 22, 2016
    Publication date: June 16, 2016
    Inventors: Kensha M. Clark, Qing Yang, Gary L. Glass
  • PROCESSES FOR PREPARING SOLID METALLOCENE-BASED CATALYST SYSTEMS
    Publication number: 20160108145
    Abstract: Methods for preparing metallocene-based catalyst systems containing an activator-support are disclosed. These methods can include contacting a solid metallocene compound, an activator-support, and an organoaluminum compound, resulting in catalyst systems with increased catalytic activity as compared to catalyst systems utilizing a solution of the metallocene compound.
    Type: Application
    Filed: October 17, 2014
    Publication date: April 21, 2016
    Inventors: Kensha M. Clark, Qing Yang, Gary L. Glass
  • Processes for preparing solid metallocene-based catalyst systems
    Patent number: 9303106
    Abstract: Methods for preparing metallocene-based catalyst systems containing an activator-support are disclosed. These methods can include contacting a solid metallocene compound, an activator-support, and an organoaluminum compound, resulting in catalyst systems with increased catalytic activity as compared to catalyst systems utilizing a solution of the metallocene compound.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: April 5, 2016
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Kensha M. Clark, Qing Yang, Gary L. Glass
  • Dual Catalyst Systems for Producing Polymers with a Broad Molecular Weight Distribution and a Uniform Short Chain Branch Distribution
    Publication number: 20160068625
    Abstract: Disclosed herein are ethylene-based polymers having a melt index less than 50 g/10 min, a ratio of Mw/Mn from 4 to 20, a density from 0.90 to 0.945 g/cm3, and a substantially constant short chain branch distribution. These polymers can be produced using a dual catalyst system containing a boron bridged metallocene compound with a cyclopentadienyl group and an indenyl group, and a single atom bridged metallocene compound with a fluorenyl group.
    Type: Application
    Filed: November 19, 2015
    Publication date: March 10, 2016
    Inventors: Qing Yang, Jeff F. Greco, Max P. McDaniel, Youlu Yu, Gary L. Glass, Tony R. Crain
  • Dual catalyst systems for producing polymers with a broad molecular weight distribution and a uniform short chain branch distribution
    Patent number: 9217049
    Abstract: Disclosed herein are ethylene-based polymers having a melt index less than 50 g/10 min, a ratio of Mw/Mn from 4 to 20, a density from 0.90 to 0.945 g/cm3, and a substantially constant short chain branch distribution. These polymers can be produced using a dual catalyst system containing a boron bridged metallocene compound with a cyclopentadienyl group and an indenyl group, and a single atom bridged metallocene compound with a fluorenyl group.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: December 22, 2015
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Jeff F. Greco, Max P. McDaniel, Youlu Yu, Gary L. Glass, Tony R. Crain
  • Dual metallocene catalyst systems for decreasing melt index and increasing polymer production rates
    Patent number: 9169333
    Abstract: The present invention provides dual catalyst systems and polymerization processes employing these dual catalyst systems. The disclosed polymerization processes can produce olefin polymers at higher production rates, and these olefin polymers may have a higher molecular weight and/or a lower melt index.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: October 27, 2015
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Albert P. Masino, Rex E. Murray, Qing Yang, Steve J. Secora, Kumudini C. Jayaratne, William B. Beaulieu, Errun Ding, Gary L. Glass, Alan L. Solenberger, Ted H. Cymbaluk
  • Dual Catalyst Systems for Producing Polymers With a Broad Molecular Weight Distribution and a Uniform Short Chain Branch Distribution
    Publication number: 20150141593
    Abstract: Disclosed herein are ethylene-based polymers having a melt index less than 50 g/10 min, a ratio of Mw/Mn from 4 to 20, a density from 0.90 to 0.945 g/cm3, and a substantially constant short chain branch distribution. These polymers can be produced using a dual catalyst system containing a boron bridged metallocene compound with a cyclopentadienyl group and an indenyl group, and a single atom bridged metallocene compound with a fluorenyl group.
    Type: Application
    Filed: May 22, 2014
    Publication date: May 21, 2015
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Jeff F. Greco, Max P. McDaniel, Youlu Yu, Gary L. Glass, Tony R. Crain
  • Use of hydrogen scavenging catalysts to control polymer molecular weight and hydrogen levels in a polymerization reactor
    Patent number: 8835588
    Abstract: The present invention provides dual catalyst systems containing a metallocene catalyst and a hydrogen scavenging catalyst, and polymerization processes employing these dual catalyst systems. Due to a reduction in hydrogen levels in the polymerization processes, olefin polymers produced from these polymerization processes may have a higher molecular weight, a lower melt index, and higher levels of unsaturation.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: September 16, 2014
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Rex E. Murray, William B. Beaulieu, Qing Yang, Errun Ding, Gary L. Glass, Alan L. Solenberger, Steve J. Secora
  • Dual Metallocene Catalyst Systems for Decreasing Melt Index and Increasing Polymer Production Rates
    Publication number: 20140235804
    Abstract: The present invention provides dual catalyst systems and polymerization processes employing these dual catalyst systems. The disclosed polymerization processes can produce olefin polymers at higher production rates, and these olefin polymers may have a higher molecular weight and/or a lower melt index.
    Type: Application
    Filed: April 29, 2014
    Publication date: August 21, 2014
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Albert P. Masino, Rex E. Murray, Qing Yang, Steve J. Secora, Kumudini C. Jayaratne, William B. Beaulieu, Errun Ding, Gary L. Glass, Alan L. Solenberger, Ted H. Cymbaluk