Patents by Inventor Elizabeth A. Benham

Elizabeth A. Benham 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).

  • Methods of Activating Chromium Catalysts
    Publication number: 20100075840
    Abstract: New methods for activating chromium catalysts for polymerization processes decrease the amount of time required for activation and increase catalyst activity. Rapid heating to a first temperature is followed by a first hold period before heating to a higher second temperature and maintaining the second temperature for a second hold period. In one aspect, the overall activation process takes less than 10 hours.
    Type: Application
    Filed: September 23, 2009
    Publication date: March 25, 2010
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Elizabeth A. Benham
  • CATALYST COMPOSITIONS AND POLYOLEFINS FOR EXTRUSION COATING APPLICATIONS
    Publication number: 20100048843
    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: October 29, 2009
    Publication date: February 25, 2010
    Applicant: CHEVRON PHILLIPS CHEMICALCOMPANY 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
    Publication number: 20100029872
    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: Application
    Filed: October 15, 2009
    Publication date: February 4, 2010
    Applicant: 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
  • HALF-METALLOCENE CATALYST COMPOSITIONS AND THEIR POLYMER PRODUCTS
    Publication number: 20100010174
    Abstract: The present invention provides polymerization catalyst compositions employing half-metallocene compounds with a heteroatom-containing ligand bound to the transition metal. Methods for making these hybrid metallocene compounds and for using such compounds in catalyst compositions for the polymerization and copolymerization of olefins are also provided.
    Type: Application
    Filed: July 14, 2008
    Publication date: January 14, 2010
    Applicant: Chevron Phillips Chemical Company, LP
    Inventors: Max P. McDaniel, Matthew G. Thorn, Elizabeth A. Benham
  • Multiple component feed methods and systems
    Publication number: 20090326168
    Abstract: Multiple components are selected, conveyed, and measured in a polymerization system. A control system adjusts the system variables to the desired values. Portions of the components can be fed to a pre-contactor before introduction into the polymerization reactor. The catalyst component concentrations and residence times are tightly controlled in the pre-contactor to affect product properties. The pre-contactor can be a single or multiple combinations of a CSTR or plug flow pre-contactors.
    Type: Application
    Filed: September 8, 2009
    Publication date: December 31, 2009
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: David H. Burns, Donald W. Verser, Elizabeth A. Benham, Max P. McDaniel, John D. Hottovy, Dale A. Zellers, Penny A. Zeller, Clay K. Thurman, David A. Lockman, John O. Lawmaster, Matthew T. Haberly, Thomas H. Smith, Jerry T. Lanier, Matthew G. Thorn
  • Acidic activator supports and catalysts for olefin polymerization
    Patent number: 7629284
    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: August 27, 2007
    Date of Patent: December 8, 2009
    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
  • Organometal catalyst compositions
    Patent number: 7622414
    Abstract: This invention provides compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said composition comprises a post-contacted organometal compound, a post-contacted organoaluminum compound, and a post-contacted treated solid oxide compound. The post-contacted organometal compound includes metallocenes. The post-contacted treated solid oxide compound contains fluorine, boron, and a solid oxide compound.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: November 24, 2009
    Assignee: Chevron Phillips Chemical Company, LP
    Inventors: Max P. McDaniel, Kathy S. Collins, Elizabeth A. Benham, Anthony P. Eaton, Michael D. Jensen, Joel L. Martin, Gil R. Hawley
  • Methods of activating chromium catalysts
    Patent number: 7615510
    Abstract: New methods for activating chromium catalysts for polymerization processes decrease the amount of time required for activation and increase catalyst activity. Rapid heating to a first temperature is followed by a first hold period before heating to a higher second temperature and maintaining the second temperature for a second hold period. In one aspect, the overall activation process takes less than 10 hours.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: November 10, 2009
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Elizabeth A. Benham
  • Multiple component feed methods and systems
    Patent number: 7615596
    Abstract: Multiple components are selected, conveyed, and measured in a polymerization system. A control system adjusts the system variables to the desired values. Portions of the components can be fed to a pre-contactor before introduction into the polymerization reactor. The catalyst component concentrations and residence times are tightly controlled in the pre-contactor to affect product properties. The pre-contactor can be a single or multiple combinations of a CSTR or plug flow pre-contactors.
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: November 10, 2009
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: David H. Burns, Donald W. Verser, Elizabeth A. Benham, Max P. McDaniel, John D. Hottovy, Dale A. Zellers, Penny A. Zellers, legal representative, Clay K Thurman, David A. Lockman, John O. Lawmaster, Matthew T. Haberly, Thomas H. Smith, Jerry T. Lanier, Matthew G. Thorn
  • Compositions that can produce polymers
    Patent number: 7601665
    Abstract: This invention provides a compositions that are useful for polymerizing at least one monomer into at least one polymer.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: October 13, 2009
    Assignee: Chevron Phillips Chemical Company, LP
    Inventors: Max P. McDaniel, Elizabeth A. Benham, Shirley J. Martin, Kathy S. Collins, James L. Smith, Gil R. Hawley, Christopher E. Wittner, Michael D. Jensen
  • ALUMINA-SILICA ACTIVATOR-SUPPORTS FOR METALLOCENE CATALYST COMPOSITIONS
    Publication number: 20090240010
    Abstract: The present invention provides activator-supports containing alumina-silica compounds with high levels of alumina, and polymerization catalyst compositions employing these activator-supports. Methods for making these activator-supports based on alumina-silica and for using such compounds in catalyst compositions for the polymerization and copolymerization of olefins are also provided.
    Type: Application
    Filed: March 20, 2008
    Publication date: September 24, 2009
    Inventors: Max P. McDaniel, Qing Yang, Randy S. Muninger, Elizabeth A. Benham, Kathy S. Collins
  • Methods of preparing a polymerization catalyst
    Patent number: 7589044
    Abstract: A method comprising contacting a donor support with a recipient support to generate a mixture, and heating the mixture to produce a polymerization catalyst, wherein a metal or a metal-containing compound migrates from the donor support to the recipient support. A method comprising contacting a donor support comprising inactive metal species with a recipient support, and mobilizing the inactive metal species from the donor support to form an active metal species on the recipient support.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: September 15, 2009
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Kathy S. Collins, Elizabeth A. Benham, William B. Beaulieu
  • Ethylene homopolymers or copolymers having good machine direction (MD) elmendorf tear strength
    Patent number: 7572875
    Abstract: This invention relates to catalyst compositions comprising a first metallocene compound, a second metallocene compound, at least one chemically-treated solid oxide, and at least one organoaluminum compound. This invention also relates to methods to prepare and use the catalyst compositions and new polyolefins. The compositions and methods disclosed herein provide ethylene polymers and copolymers with lower MI, increased melt strength, and good MD tear properties.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: August 11, 2009
    Assignee: Chevron Phillips Chemical Company, LP
    Inventors: Michael D. Jensen, Joel L. Martin, Max P. McDaniel, Qing Yang, Matthew G. Thorn, Elizabeth A. Benham, Ted H. Cymbaluk, Ashish M. Sukhadia, Rajendra K. Krishnaswamy, Mark E. Kertok
  • Fast Activating Catalyst
    Publication number: 20090163681
    Abstract: A method of preparing a catalyst comprising aging a silica support in an alkaline solution to produce an alkaline aged silica support, removing at least a portion of the alkaline solution from the alkaline aged silica support to produce a dried silica support, and activating the silica support to produce a catalyst composition, wherein alkaline aging lowers the surface area of the silica support to less than about 50% of the original value and wherein activation of the silica support is carried out in batches of equal to or greater than about 500 lbs for a time period of less than about 8 hours.
    Type: Application
    Filed: December 21, 2007
    Publication date: June 25, 2009
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Max P. McDaniel, Elizabeth A. Benham, Ted Cymbaluk, George Neil
  • Continuous catalyst activator
    Publication number: 20090164046
    Abstract: Methods and systems for preparing catalyst, such as chromium catalysts, are provided. The valence of at least a portion of the catalyst sent to an activator is changed from Cr(III) to Cr(VI). The catalyst is prepared or activated continuously using a fluidization bed catalyst activator.
    Type: Application
    Filed: December 20, 2007
    Publication date: June 25, 2009
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Elizabeth A. Benham, Max P. McDaniel, Ted H. Cymbaluk, Charles K. Newsome, Charles R. Nease, H. Kenneth Staffin, Thomas R. Parr
  • Organometal compound catalyst
    Patent number: 7547754
    Abstract: This invention provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer. This invention also provides catalyst compositions that are useful for polymerizing at least one monomer to produce a polymer, wherein said catalyst composition comprises contacting an organometal compound, an organoaluminum compound, and a treated solid oxide compound.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: June 16, 2009
    Assignee: Chevron Phillips Chemical Company, LP
    Inventors: Max P. McDaniel, Kathy S. Collins, Gil R. Hawley, Michael D. Jensen, Christopher E. Wittner, Elizabeth A. Benham, Anthony P. Eaton, Joel L. Martin, David C. Rohlfing, Youlu Yu
  • Process for producing polymers
    Publication number: 20090124768
    Abstract: Catalyst systems for producing olefin polymers, methods of making such catalyst systems, and processes for producing olefin polymers using such catalyst systems are provided. The catalyst system comprises a first component and a second component, where the first component comprises chromium on a support, where the support comprises phosphated alumina, and the second component comprises: (1) a metal halide compound, a transition metal compound, and a precipitating agent, or (2) a substituted or unsubstituted dicyclopentadienyl chromium compound deposited onto a calcined oxide carrier, where the carrier includes silica, alumina, aluminophosphate, or any mixed oxide thereof.
    Type: Application
    Filed: September 2, 2008
    Publication date: May 14, 2009
    Inventors: Max P. McDaniel, Elizabeth A. Benham, Al R. Wolfe
  • Methods of preparing a polymerization catalyst
    Publication number: 20090088318
    Abstract: A method comprising contacting a donor support with a recipient support to generate a mixture, and heating the mixture to produce a polymerization catalyst, wherein a metal or a metal-containing compound migrates from the donor support to the recipient support. A method comprising contacting a donor support comprising inactive metal species with a recipient support, and mobilizing the inactive metal species from the donor support to form an active metal species on the recipient support.
    Type: Application
    Filed: October 2, 2007
    Publication date: April 2, 2009
    Inventors: Max P. McDaniel, Kathy S. Collins, Elizabeth A. Benham, William B. Beaulieu
  • CATALYST COMPOSTIONS AND POLYOLEFINS FOR EXTRUSION COATING APPLICATIONS
    Publication number: 20090054606
    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: October 6, 2008
    Publication date: February 26, 2009
    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
  • Catalyst compositions and polyolefins for extrusion coating applications
    Patent number: 7456243
    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: September 29, 2005
    Date of Patent: November 25, 2008
    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