Patents by Inventor Anthony N. Speca

Anthony N. Speca 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: 7691955
    Abstract: The present invention relates to the removal of hydrocarbon residues from a catalyst and more specifically the air activation of a catalyst containing hydrocarbon residues. It also relates to extruded pipe and utility conduit resins comprising polyethylene, household/industrial chemicals container resins, and to a polyethylene resin particularly suitable for large parts by blow molding and sheet extrusion procedures, wherein the resin is made by a process using an activated chromium and titanium-based catalyst.
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: April 6, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Scott T. Roger, Thomas W. Towles, Anthony N. Speca, Stanley J. Katzen
  • Patent number: 7632901
    Abstract: Methods of making supported chromium catalyst systems and processes of polymerizing ethylene using the supported chromium catalyst systems are disclosed. A method of forming a catalyst system in a polymerization reactor includes contacting a supported chromium catalyst and a metal alkyl cocatalyst by cofeeding the catalyst and cocatalyst to the reactor or feeding the catalyst and cocatalyst separately to the reactor, to form a catalyst system. The catalyst and cocatalyst are not pre-contacted prior to the feeding or cofeeding step. The catalyst system can be contacted with ethylene and optional alpha-olefin comonomer to form polyethylene.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: December 15, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Stanley J. Katzen, Zerong Lin, Anthony N. Speca, James A. Kendrick, Scott T. Roger
  • Publication number: 20080234449
    Abstract: The present invention relates to the removal of hydrocarbon residues from a catalyst and more specifically the air activation of a catalyst containing hydrocarbon residues. It also relates to extruded pipe and utility conduit resins comprising polyethylene, household/industrial chemicals container resins, and to a polyethylene resin particularly suitable for large parts by blow molding and sheet extrusion procedures, wherein the resin is made by a process using an activated chromium and titanium-based catalyst.
    Type: Application
    Filed: May 1, 2008
    Publication date: September 25, 2008
    Inventors: Scott T. Roger, Thomas W. Towles, Anthony N. Speca, Stanley J. Katzen
  • Patent number: 7384885
    Abstract: The present invention relates to the removal of hydrocarbon residues from a catalyst and more specifically the air activation of a catalyst containing hydrocarbon residues. It also relates to extruded pipe and utility conduit resins comprising polyethylene, household/industrial chemicals container resins, and to a polyethylene resin particularly suitable for large parts by blow molding and sheet extrusion procedures, wherein the resin is made by a process using an activated chromium and titanium-based catalyst.
    Type: Grant
    Filed: February 16, 2005
    Date of Patent: June 10, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Scott T. Roger, Thomas W. Towles, Anthony N. Speca, Stanley J. Katzen
  • Patent number: 7381778
    Abstract: This invention relates to a method of preparing a supported catalyst comprising the steps of contacting a solid titanium with a supported catalyst compound, and heating the combination to at least 150° C.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: June 3, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Stanley J. Katzen, Anthony N. Speca
  • Patent number: 7375169
    Abstract: A method for polymerizing ethylene is provided. The method can include preparing a supported catalyst composition comprising the steps of: (a) dehydrating a chromium impregnated support; (b) at least partially dissolving a titanium-containing compound in one or more inert solvents to provide a solution comprising the titanium-containing compound; (c) contacting the dehydrated chromium impregnated support with the titanium-containing solution to provide a mixture comprising the solvent, titanium-containing compound and chromium impregnated support; (d) removing the solvent from the mixture; and (e) activating the product of step (d) at a temperature of at least 800° F. (427° C.) to provide a supported titanated chrome catalyst composition. The supported titanated chrome catalyst composition can be feed to a slurry reactor, and contacted with an optional co-catalyst, under polymerization conditions, with ethylene.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: May 20, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Edward F. Smith, Stanley J. Katzen, Anthony N. Speca, Thomas W. Towles
  • Patent number: 7262259
    Abstract: This invention relates to a method to polymerize olefins comprising contacting a solid aluminum or solid titanium compound with a supported catalyst compound, heating the solid aluminum or solid titanium compound to cause the solid compound to vaporize, optionally activating the support by oxidation, thereafter contacting the activated support with one or more olefin monomers.
    Type: Grant
    Filed: February 6, 2007
    Date of Patent: August 28, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Stanley J. Katzen, Anthony N. Speca
  • Patent number: 7217676
    Abstract: This invention relates to a catalyst support comprising the result of the combination of: (a) a support comprising hydroxyl groups; (b) a capping agent comprising a boron containing Lewis acid; and (c) an ionic activator, wherein at least some of the capping agent does not form a support bound activator.
    Type: Grant
    Filed: January 16, 2004
    Date of Patent: May 15, 2007
    Assignee: Exxon Mobil Chemical Patents Inc.
    Inventors: George Rodriguez, Anthony N. Speca, Matthew C. Kuchta, David H. McConville, Terry J. Burkhardt
  • Patent number: 7192901
    Abstract: This invention relates to a method of preparing a supported catalyst comprising the steps of contacting a solid titanium or solid aluminum compound with a supported catalyst compound, and heating the combination to at least 150° C.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: March 20, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Stanley J. Katzen, Anthony N. Speca
  • Patent number: 6921798
    Abstract: Polymerization processes are disclosed for producing polyethylene having a target density and improved environmental stress resistance. Ethylene and optionally one or more ?-olefin comonomers, supported chromium catalyst, and metal alkyl cocatalyst are contacted to produce polyethylene. The density of the polyethylene is determined, and the concentration of cocatalyst is adjusted in response to a deviation between the density of the polyethylene and the target density. The catalyst and cocatalyst can be fed separately into the reactor, or can be co-fed, eliminating the need to pre-contact the catalyst and cocatalyst prior to introducing them into the reactor.
    Type: Grant
    Filed: June 6, 2003
    Date of Patent: July 26, 2005
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: James A. Kendrick, Scott T. Roger, Stanley J. Katzen, Zerong Lin, Anthony N. Speca
  • Patent number: 6846770
    Abstract: This invention relates to metallocene catalyst compositions which are highly active for the polymerization of olefins, particularly prochiral ?-olefins. The catalyst compositions contain at least one metallocene, and least one activator and a support that has been fluorided using a fluoride containing compound.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: January 25, 2005
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventor: Anthony N. Speca
  • Patent number: 6809057
    Abstract: An olefin polymerization catalyst system, comprising a catalyst represented by the general formula CrR4, wherein each R is independently a hydrocarbyl or substituted hydrocarbyl, with the proviso that R may not be a cyclopentadienyl group, an activator represented by the general formula, MQ2, where M is a Group II metal, where each Q is independently an alkyl, or substituted alkyl; and a support. The support may be organic or inorganic. Ethylene and one or more olefins may be polymerized by the catalyst system.
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: October 26, 2004
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Zerong Lin, Robert T. Li, Anthony N. Speca, Stanley J. Katzen, David H. McConville
  • Publication number: 20040192865
    Abstract: This invention is related to extruded pipe resins comprising polyethylene.
    Type: Application
    Filed: February 23, 2004
    Publication date: September 30, 2004
    Inventors: Scott T. Roger, Thomas W. Towles, Anthony N. Speca, Stanley J. Katzen
  • Publication number: 20040157729
    Abstract: An olefin polymerization catalyst system, comprising a catalyst represented by the general formula CrR4, wherein each R is independently a hydrocarbyl or substituted hydrocarbyl, with the proviso that R may not be a cyclopentadienyl group, an activator represented by the general formula, MQ2, where M is a Group II metal, where each Q is independently an alkyl, or substituted alkyl; and a support. The support may be organic or inorganic. Ethylene and one or more olefins may be polymerized by the catalyst system.
    Type: Application
    Filed: February 10, 2003
    Publication date: August 12, 2004
    Inventors: Zerong Lin, Robert T. Li, Anthony N. Speca, Stanley J. Katzen, David H. McConville
  • Patent number: 6667272
    Abstract: This invention relates to metallocene catalyst compositions which are highly active for the polymerization of olefins, particularly prochiral &agr;-olefins. The catalyst compositions contain at least one metallocene, and least one activator and a support that has been fluorided using a fluoride containing compound.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: December 23, 2003
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventor: Anthony N. Speca
  • Publication number: 20030232715
    Abstract: Methods of making supported chromium catalyst systems and processes of polymerizing ethylene using the supported chromium catalyst systems are disclosed. A method of forming a catalyst system in a polymerization reactor includes contacting a supported chromium catalyst and a metal alkyl cocatalyst by cofeeding the catalyst and cocatalyst to the reactor or feeding the catalyst and cocatalyst separately to the reactor, to form a catalyst system. The catalyst and cocatalyst are not pre-contacted prior to the feeding or cofeeding step. The catalyst system can be contacted with ethylene and optional alpha-olefin comonomer to form polyethylene.
    Type: Application
    Filed: June 6, 2003
    Publication date: December 18, 2003
    Applicant: ExxonMobil Chemical Patents Inc.
    Inventors: Stanley J. Katzen, Zerong Lin, Anthony N. Speca, James A. Kendrick, Scott T. Roger
  • Publication number: 20030232935
    Abstract: Polymerization processes are disclosed for producing polyethylene having a target density and improved environmental stress resistance. Ethylene and optionally one or more &agr;-olefin comonomers, supported chromium catalyst, and metal alkyl cocatalyst are contacted to produce polyethylene. The density of the polyethylene is determined, and the concentration of cocatalyst is adjusted in response to a deviation between the density of the polyethylene and the target density. The catalyst and cocatalyst can be fed separately into the reactor, or can be co-fed, eliminating the need to pre-contact the catalyst and cocatalyst prior to introducing them into the reactor.
    Type: Application
    Filed: June 6, 2003
    Publication date: December 18, 2003
    Inventors: James A. Kendrick, Scott T. Roger, Stanley J. Katzen, Zerong Lin, Anthony N. Speca
  • Patent number: 6664348
    Abstract: This invention relates to metallocene catalyst compositions which are highly active for the polymerization of olefins, particularly prochiral &agr;-olefins. The catalyst compositions contain at least one metallocene, and least one activator and a support that has been fluorided using a fluoride containing compound.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: December 16, 2003
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventor: Anthony N. Speca
  • Patent number: 6583227
    Abstract: This invention relates generally to crystalline propylene polymers, to methods for their production and to methods for their use in film applications. Specifically, this invention relates to crystalline propylene polymers comprising both propylene homopolymer and propylene copolymer. The compositions are prepared using metallocene catalyst systems comprising at least two metallocenes in a polymerization process that involves the sequential or parallel polymerization of propylene homopolymer and copolymer using propylene with a small amount of comonomer, preferably ethylene. The polymerization is catalyzed by a dual metallocene catalyst system. The resulting polymers have a broad, bimodal molecular weight distribution. The resulting polymers are excellent for use in the production of biaxially oriented films or non-oriented films.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: June 24, 2003
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Aspy K. Mehta, Michael C. Chen, James J. McAlpin, Anthony N. Speca, Kelly Tormaschy, Chon Y. Lin
  • Patent number: 6576306
    Abstract: This invention relates generally to crystalline propylene polymers, to methods for their production and to methods for their use in film applications. Specifically, this invention relates to crystalline propylene polymers comprising both propylene homopolymer and propylene copolymer. The compositions are prepared using metallocene catalyst systems comprising at least two metallocenes in a polymerization process that involves the sequential or parallel polymerization of propylene homopolymer and copolymer using propylene with a small amount of comonomer, preferably ethylene. The polymerization is catalyzed by a dual metallocene catalyst system. The resulting polymers have a broad, bimodal molecular weight distribution. The resulting polymers are excellent for use in the production of biaxially oriented films or non-oriented films.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: June 10, 2003
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Aspy K. Mehta, Michael C. Chen, James J. McAlpin, Anthony N. Speca, Kelly Tormaschy, Chon Y. Lin