Patents by Inventor Joel L. Martin

Joel L. Martin 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).

  • Process for producing broader molecular weight distribution polymers with a reverse comonomer distribution and low levels of long chain branches
    Patent number: 8114946
    Abstract: The present invention provides a polymerization process which is conducted by contacting an olefin monomer and at least one olefin comonomer in the presence of hydrogen and a metallocene-based catalyst composition. Polymers produced from the polymerization process are also provided, and these polymers have a reverse comonomer distribution, low levels of long chain branches, and a ratio of Mw/Mn from about 3 to about 6.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: February 14, 2012
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Max P. McDaniel, Joel L. Martin, Tony R. Crain, Randy S. Muninger, Jerry T. Lanier, Jeff S. Fodor, Paul J. Deslauriers, Chung C. Tso, David C. Rohlfing
  • Catalyst Compositions and Polyolefins for Extrusion Coating Applications
    Publication number: 20110319575
    Abstract: This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a supported catalyst composition. In one aspect, the present invention encompasses a catalyst composition comprising the contact product of a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum compound. The new resins were characterized by useful properties in impact, tear, adhesion, sealing, extruder motor loads and pressures at comparable melt index values, and neck-in and draw-down.
    Type: Application
    Filed: September 8, 2011
    Publication date: December 29, 2011
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Michael D. Jensen, Max P. McDaniel, Joel L. Martin, Elizabeth A. Benham, Randy L. Muninger, Gary Jerdee, Ashish M. Sukhadia, Qing Yáng, Matthew G. Thorn
  • Nano-linked metallocene catalyst compositions and their polymer products
    Patent number: 8080681
    Abstract: The present invention provides polymerization catalyst compositions employing novel dinuclear metallocene compounds. Methods for making these new dinuclear metallocene compounds and for using such compounds in catalyst compositions for the polymerization and copolymerization of olefins are also provided.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: December 20, 2011
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Rex E. Murray, Kumudini C. Jayaratne, Qing Yang, Joel L. Martin
  • Nano-Linked Metallocene Catalyst Compositions and Their Polymer Products
    Publication number: 20110288321
    Abstract: The present invention provides polymerization catalyst compositions employing novel dinuclear metallocene compounds. Methods for making these new dinuclear metallocene compounds and for using such compounds in catalyst compositions for the polymerization and copolymerization of olefins are also provided.
    Type: Application
    Filed: August 1, 2011
    Publication date: November 24, 2011
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Rex E. Murray, Kumudini C. Jayaratne, Qing Yang, Joel L. Martin
  • CATALYST COMPOSITIONS FOR PRODUCING HIGH Mz/Mw POLYOLEFINS
    Publication number: 20110257348
    Abstract: The present invention provides a polymerization process utilizing a dual ansa-metallocene catalyst system. Polymers produced from the polymerization process are also provided, and these polymers have a reverse comonomer distribution, a non-bimodal molecular weight distribution, a ratio of Mw/Mn from about 3 to about 8, and a ratio of Mz/Mw from about 3 to about 6.
    Type: Application
    Filed: April 19, 2010
    Publication date: October 20, 2011
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Max P. McDaniel, William B. Beaulieu, Joel L. Martin, Tony R. Crain
  • Catalyst compositions and polyolefins for extrusion coating applications
    Patent number: 8030241
    Abstract: This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a supported catalyst composition. In one aspect, the present invention encompasses a catalyst composition comprising the contact product of a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum compound. The new resins were characterized by useful properties in impact, tear, adhesion, sealing, extruder motor loads and pressures at comparable melt index values, and neck-in and draw-down.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: October 4, 2011
    Assignee: Chevron Phillips Chemical Company, LP
    Inventors: Michael D. Jensen, Max P. McDaniel, Joel L. Martin, Elizabeth A. Benham, Randy Muninger, Gary Jerdee, Ashish M. Sukhadia, Qing Yang, Matthew G. Thorn
  • Nano-linked metallocene catalyst compositions and their polymer products
    Patent number: 8012900
    Abstract: The present invention provides polymerization catalyst compositions employing novel dinuclear metallocene compounds. Methods for making these new dinuclear metallocene compounds and for using such compounds in catalyst compositions for the polymerization and copolymerization of olefins are also provided.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: September 6, 2011
    Assignee: Chevron Phillips Chemical Company, L.P.
    Inventors: Rex E. Murray, Kumudini C. Jayaratne, Qing Yang, Joel L. Martin
  • DUAL METALLOCENE CATALYSTS FOR POLYMERIZATION OF BIMODAL POLYMERS
    Publication number: 20110201770
    Abstract: This invention relates to catalyst compositions, methods, and polymers encompassing at least one first Group 4 metallocene compound comprising bridging ?5-cyclopentadienyl-type ligands, in combination with at least one second Group 4 metallocene with non-bridging ?5-cyclopentadienyl-type ligands, typically in combination with at least one cocatalyst, and at least one activator. The compositions and methods disclosed herein provide ethylene polymers with a bimodal molecular weight distribution.
    Type: Application
    Filed: April 26, 2011
    Publication date: August 18, 2011
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: QING YANG, Kumudini C. Jayaratne, Michael D. Jensen, Max P. McDaniel, Joel L. Martin, Matthew G. Thorn, Jerry T. Lanier, Tony R. Crain
  • 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
  • Dual metallocene catalysts for polymerization of bimodal polymers
    Patent number: 7960487
    Abstract: This invention relates to catalyst compositions, methods, and polymers encompassing at least one first Group 4 metallocene compound comprising bridging ?5-cyclopentadienyl-type ligands, in combination with at least one second Group 4 metallocene with non-bridging ?5-cyclopentadienyl-type ligands, typically in combination with at least one cocatalyst, and at least one activator. The compositions and methods disclosed herein provide ethylene polymers with a bimodal molecular weight distribution.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: June 14, 2011
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Kumudini C. Jayaratne, Michael D. Jensen, Max P. McDaniel, Joel L. Martin, Matthew G. Thorn, Jerry T. Lanier, Tony R. Crain
  • 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
  • NANO-LINKED METALLOCENE CATALYST COMPOSITIONS AND THEIR POLYMER PRODUCTS
    Publication number: 20110059840
    Abstract: The present invention provides polymerization catalyst compositions employing novel dinuclear metallocene compounds. Methods for making these new dinuclear metallocene compounds and for using such compounds in catalyst compositions for the polymerization and copolymerization of olefins are also provided.
    Type: Application
    Filed: November 10, 2010
    Publication date: March 10, 2011
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Rex E. Murray, Kumudini C. Jayaratne, Qing Yang, Joel L. Martin
  • Nano-linked metallocene catalyst compositions and their polymer products
    Patent number: 7863210
    Abstract: The present invention provides polymerization catalyst compositions employing novel dinuclear metallocene compounds. Methods for making these new dinuclear metallocene compounds and for using such compounds in catalyst compositions for the polymerization and copolymerization of olefins are also provided.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: January 4, 2011
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Rex E. Murray, Kumudini C. Jayaratne, Qing Yang, Joel L. Martin
  • 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
  • Catalyst compositions and polyolefins for extrusion coating applications
    Patent number: 7842763
    Abstract: This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a supported catalyst composition. In one aspect, the present invention encompasses a catalyst composition comprising the contact product of a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum compound. The new resins were characterized by useful properties in impact, tear, adhesion, sealing, extruder motor loads and pressures at comparable melt index values, and neck-in and draw-down.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: November 30, 2010
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Michael D. Jensen, Max P. McDaniel, Joel L. Martin, Elizabeth A. Benham, Randy Muninger, Gary Jerdee, Ashish M. Sukhadia, Qing Yang, Matthew G. Thorn
  • Acidic activator-supports and catalysts for olefin polymerization
    Patent number: 7790820
    Abstract: This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, typically using a supported catalyst composition. In one aspect, this invention encompasses precontacting a metallocene with an olefin or alkyne monomer and an organoaluminum compound, prior to contacting this mixture with the acidic activator-support.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: September 7, 2010
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Michael D. Jensen, Gil R. Hawley, Max P. McDaniel, Tony Crain, Elizabeth A. Benham, Joel L. Martin, Qing Yang
  • System and method for reducing fouling in a reactor
    Patent number: 7750095
    Abstract: The techniques disclosed provide a treatment method for passivating the interior surface of a polymerization reactor to minimize the formation of a polymer coating on the surface. The passivation is performed using a passivating agent that reacts with adsorbed water to form labile passivation products. Both the passivating agent and passivation products may be easily removed from the reactor prior to polymerization. Other embodiments provide a reactor system with a tank configured to automatically add a passivating agent to the reactor and processes for making polymers using a treated reactor.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: July 6, 2010
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Joel L. Martin, Jim B. Askew
  • PROCESS FOR PRODUCING BROADER MOLECULAR WEIGHT DISTRIBUTION POLYMERS WITH A REVERSE COMONOMER DISTRIBUTION AND LOW LEVELS OF LONG CHAIN BRANCHES
    Publication number: 20100160579
    Abstract: The present invention provides a polymerization process which is conducted by contacting an olefin monomer and at least one olefin comonomer in the presence of hydrogen and a metallocene-based catalyst composition. Polymers produced from the polymerization process are also provided, and these polymers have a reverse comonomer distribution, low levels of long chain branches, and a ratio of Mw/Mn from about 3 to about 6.
    Type: Application
    Filed: December 18, 2008
    Publication date: June 24, 2010
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Max P. McDaniel, Joel L. Martin, Tony R. Crain, Randy S. Muninger, Jerry T. Lanier, Jeff S. Fodor, Paul J. Deslauriers, Chung C. Tso, David C. Rohlfing
  • Polymerization catalysts for producing high molecular weight polymers with low levels of long chain branching
    Patent number: 7732542
    Abstract: This invention relates to catalyst compositions, methods, and polymers encompassing at least one Group 4 metallocene compound comprising bridging ?5-cyclopentadienyl-type ligands, typically in combination with at least one cocatalyst, and at least one activator. The compositions and methods disclosed herein provide ethylene polymers with low levels of long chain branching.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: June 8, 2010
    Assignee: Chevron Phillips Chemical Company, LP
    Inventors: Qing Yang, Michael D. Jensen, Joel L. Martin, Matthew G. Thorn, Max P. McDaniel, Youlu Yu, David C. Rohlfing
  • POLYMERIZATION CATALYSTS FOR PRODUCING HIGH MOLECULAR WEIGHT POLYMERS WITH LOW LEVELS OF LONG CHAIN BRANCHING
    Publication number: 20100069582
    Abstract: This invention relates to catalyst compositions, methods, and polymers encompassing at least one Group 4 metallocene compound comprising bridging ?5-cyclopentadienyl-type ligands, typically in combination with at least one cocatalyst, and at least one activator. The compositions and methods disclosed herein provide ethylene polymers with low levels of long chain branching.
    Type: Application
    Filed: November 18, 2009
    Publication date: March 18, 2010
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: QING YANG, Michael D. Jensen, Joel L. Martin, Matthew G. Thorn, Max P. McDaniel, Youlu Yu, David C. Rohlfing