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).

  • Dual metallocene catalyst systems for decreasing melt index and increasing polymer production rates
    Patent number: 8748546
    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: May 7, 2013
    Date of Patent: June 10, 2014
    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
  • Methods for controlling dual catalyst olefin polymerizations with an organozinc compound
    Patent number: 8680218
    Abstract: Methods for controlling properties of an olefin polymer using an organozinc compound are disclosed. The HLMI/MI shear ratio of the polymer can be decreased and the Mz/Mw ratio of the polymer can be increased via the addition of the organozinc compound.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: March 25, 2014
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Max P. McDaniel, Errun Ding, Ted H. Cymbaluk, Tony R. Crain, Gary L. Glass
  • Use of Hydrogen Scavenging Catalysts to Control Polymer Molecular Weight and Hydrogen Levels in a Polymerization Reactor
    Publication number: 20130324690
    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: Application
    Filed: June 26, 2013
    Publication date: December 5, 2013
    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: 20130245210
    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: May 7, 2013
    Publication date: September 19, 2013
    Applicant: Chevron Philips 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
  • Use of hydrogen scavenging catalysts to control polymer molecular weight and hydrogen levels in a polymerization reactor
    Patent number: 8501654
    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 5, 2012
    Date of Patent: August 6, 2013
    Assignee: Chevron Philips Chemical Company LP
    Inventors: Rex E. Murray, William B. Beaulieu, Qing Yang, Errun Ding, Gary L. Glass, Alan L. Solenberger, Steven J. Secora
  • Dual metallocene catalyst systems for decreasing melt index and increasing polymer production rates
    Patent number: 8450436
    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: November 20, 2012
    Date of Patent: May 28, 2013
    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
  • Nano-linked heteronuclear metallocene catalyst compositions and their polymer products
    Patent number: 8426536
    Abstract: The present invention provides polymerization catalyst compositions employing novel heterodinuclear metallocene compounds. Methods for making these new dinuclear metallocene compounds and for using such compounds in catalyst compositions for the polymerization of olefins are also provided.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: April 23, 2013
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Rex E. Murray, Kumudini C. Jayaratne, Qing Yang, Joel L. Martin, Gary L. Glass
  • Dual metallocene catalyst systems for decreasing melt index and increasing polymer production rates
    Patent number: 8329834
    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: June 28, 2010
    Date of Patent: December 11, 2012
    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
  • USE OF HYDROGEN SCAVENGING CATALYSTS TO CONTROL POLYMER MOLECULAR WEIGHT AND HYDROGEN LEVELS IN A POLYMERIZATION REACTOR
    Publication number: 20120238712
    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: Application
    Filed: June 5, 2012
    Publication date: September 20, 2012
    Applicant: 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
  • Use of hydrogen scavenging catalysts to control polymer molecular weight and hydrogen levels in a polymerization reactor
    Patent number: 8207280
    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 28, 2010
    Date of Patent: June 26, 2012
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Rex E. Murray, William B. Beaulieu, Qing Yang, Errun Ding, Gary L. Glass, Alan L. Solenberger, Steven J. Secora
  • NANO-LINKED HETERONUCLEAR METALLOCENE CATALYST COMPOSITIONS AND THEIR POLYMER PRODUCTS
    Publication number: 20120149854
    Abstract: The present invention provides polymerization catalyst compositions employing novel heterodinuclear metallocene compounds. Methods for making these new dinuclear metallocene compounds and for using such compounds in catalyst compositions for the polymerization of olefins are also provided.
    Type: Application
    Filed: February 16, 2012
    Publication date: June 14, 2012
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: REX E. MURRAY, KUMUDINI C. JAYARATNE, QING YANG, JOEL L. MARTIN, GARY L. GLASS
  • Nano-linked heteronuclear metallocene catalyst compositions and their polymer products
    Patent number: 8143430
    Abstract: The present invention provides polymerization catalyst compositions employing novel heterodinuclear metallocene compounds. Methods for making these new dinuclear metallocene compounds and for using such compounds in catalyst compositions for the polymerization of olefins are also provided.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: March 27, 2012
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Rex E. Murray, Kumudini C. Jayaratne, Qing Yang, Joel L. Martin, Gary L. Glass
  • NANO-LINKED HETERONUCLEAR METALLOCENE CATALYST COMPOSITIONS AND THEIR POLYMER PRODUCTS
    Publication number: 20110144290
    Abstract: The present invention provides polymerization catalyst compositions employing novel heterodinuclear metallocene compounds. Methods for making these new dinuclear metallocene compounds and for using such compounds in catalyst compositions for the polymerization of olefins are also provided.
    Type: Application
    Filed: February 24, 2011
    Publication date: June 16, 2011
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Rex E. Murray, Kumudini C. Jayaratne, Qing Yang, Joel L. Martin, Gary L. Glass
  • Nano-linked heteronuclear metallocene catalyst compositions and their polymer products
    Patent number: 7919639
    Abstract: The present invention provides polymerization catalyst compositions employing novel heterodinuclear metallocene compounds. Methods for making these new dinuclear metallocene compounds and for using such compounds in catalyst compositions for the polymerization of olefins are also provided.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: April 5, 2011
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Rex E. Murray, Kumudini C. Jayaratne, Qing Yang, Joel L. Martin, Gary L. Glass
  • USE OF HYDROGEN SCAVENGING CATALYSTS TO CONTROL POLYMER MOLECULAR WEIGHT AND HYDROGEN LEVELS IN A POLYMERIZATION REACTOR
    Publication number: 20100331501
    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: Application
    Filed: June 28, 2010
    Publication date: December 30, 2010
    Applicant: 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: 20100331505
    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: June 28, 2010
    Publication date: December 30, 2010
    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
  • NANO-LINKED HETERONUCLEAR METALLOCENE CATALYST COMPOSITIONS AND THEIR POLYMER PRODUCTS
    Publication number: 20100324236
    Abstract: The present invention provides polymerization catalyst compositions employing novel heterodinuclear metallocene compounds. Methods for making these new dinuclear metallocene compounds and for using such compounds in catalyst compositions for the polymerization of olefins are also provided.
    Type: Application
    Filed: June 23, 2009
    Publication date: December 23, 2010
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: REX E. MURRAY, KUMUDINI C. JAYARATNE, QING YANG, JOEL L. MARTIN, GARY L. GLASS
  • Solid metallocene catalyst system
    Patent number: 6852660
    Abstract: A solid metallocene-containing catalyst system of an organoaluminoxane, at least one metallocene having at least one olefinically unsaturated substituent and a polyolefin is disclosed. The polyolefin is formed from at least one olefin polymerized in the presence of a combination of a solution of the organoluminoxane in an aromatic liquid, the at least one metallocene, and an aliphatic liquid. The solid metallocene-containing catalyst system may also include one or more the particulate solids.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: February 8, 2005
    Assignee: Chevron Phillips Chemical Company, LP
    Inventors: Kent E. Mitchell, Gary L. Glass, L. Matthew Kirchman, Robert K. Provence, Leigh A. Ford, Randall S. Muninger
  • Solid metallocene catalyst system
    Publication number: 20030144436
    Abstract: A solid metallocene-containing catalyst system of an organoaluminoxane, at least one metallocene having at least one olefinically unsaturated substituent and a polyolefin is disclosed. The polyolefin is formed from at least one olefin polymerized in the presence of a combination of a solution of the organoluminoxane in an aromatic liquid, the at least one metallocene, and an aliphatic liquid. The solid metallocene-containing catalyst system may also include one or more the particulate solids.
    Type: Application
    Filed: January 21, 2003
    Publication date: July 31, 2003
    Inventors: Kent E. Mitchell, Gary L. Glass, L. Matthew Kirchman, Robert K. Provence, Leigh A. Ford, Randall S. Muninger
  • Method for making and using a metallocene catalyst system
    Patent number: 6534609
    Abstract: Methods are disclosed for preparing a highly active solid metallocene-containing catalyst system and its use in the polymerization of olefins. The catalyst system is prepared by creating a catalyst system solution by combining an aluminoxane with a metallocene having a substituent which has olefinic unsaturation in an aliphatic liquid to form a liquid catalyst system, conducting prepolymerization of an olefin in the liquid catalyst system, preferably in multiple stages, and separating the resulting solid metallocene-containing catalyst system from the reaction mixture. Also polymerization of olefins using the inventive solid catalyst system is disclosed.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: March 18, 2003
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Kent E. Mitchell, Gary L. Glass, L. Matthew Kirchman, Robert K. Provence, Leigh A. Ford, Randall S. Muninger