Patents by Inventor Blair A. Graham

Blair A. Graham 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: 8247065
    Abstract: Provided are blends of linear low density polyethylene copolymers with very low density, low density, medium density, high density, and differentiated polyethylenes and other polymers. The invention also includes articles produced from the linear low density polyethylene and polyethylene blends described herein.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: August 21, 2012
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Steven A. Best, Bernard L. Bossaert, Ronald N. Cooke, Paul M. German, Blair A. Graham, Carlos A. Mota, Calvin K. Schram, Barry C. Trudell
  • Publication number: 20080224349
    Abstract: This invention relates generally to methods of rotationally molding multi-layer parts. More particularly, in certain embodiments, the invention relates to methods of manufacturing a part having an interior layer of polymerized macrocyclic polyester oligomer and an exterior layer of a substantially non-oligomeric polymer. The invention also relates to methods of manufacturing a part with a scratch resistant surface.
    Type: Application
    Filed: November 5, 2007
    Publication date: September 18, 2008
    Inventors: Jing Wang, Blair A. Graham, Anne-Marie C. Forcum, Paul R. Willey
  • Patent number: 7396881
    Abstract: Polyethylene blend compositions suitable for rotomolding, rotomolded articles, and processes for rotomolding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.4 to 3.0 g/10 min and a density of from 0.910 to 0.930 g/cm3; and a second polyethylene having a melt index of 10 to 30 g/10 min and a density of 0.945 to 0.975 g/cm3. The composition has a density of from 0.930 to 0.955 g/cm3 and a melt index of 1.5 to 12 g/10 min, and the first and second polyethylenes differ in density by from 0.030 to 0.048 g/cm3. These compositions exhibit improved physical properties, such as Environmental Stress Crack Resistance and Izod Impact Strength. Articles produced from the compositions may also exhibit improved impact resistance properties, enhanced ductile break properties, and improved deflection resistance, which represents a combination of creep and fatigue resistance.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: July 8, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Arnold Lustiger, David John Lohse, Blair A. Graham, Ronald Cooke
  • Patent number: 7396878
    Abstract: Polyethylene blend compositions suitable for injection molding, injection molded articles, and processes for injection molding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.1 to 3.0 g/10 min and a density of from 0.905 to 0.938 g/cm3; and a second polyethylene having a melt index of 10 to 500 g/10 min and a density of 0.945 to 0.975 g/cm3. The compositions have a density of from 0.920 to 0.973 g/cm3 and a melt index of 2 to 200 g/10 min, and the density of the second polyethylene is from 0.037 to 0.062 g/cm3 greater than the density of the first polyethylene. The compositions exhibit improved physical properties, such as Environmental Stress Crack Resistance, relative to conventional compositions of similar melt index and density. In certain embodiments, the compositions, and articles produced therefrom, also exhibit an improved balance of toughness properties and processability properties.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: July 8, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Arnold Lustiger, David John Lohse, Blair A. Graham, Barry C. Trudell
  • Publication number: 20080038533
    Abstract: Provided are blends of linear low density polyethylene copolymers with very low density, low density, medium density, high density, and differentiated polyethylenes and other polymers. The invention also includes articles produced from the linear low density polyethylene and polyethylene blends described herein.
    Type: Application
    Filed: April 24, 2007
    Publication date: February 14, 2008
    Inventors: Steven A. Best, Bernard L. Bossaert, Ronald N. Cooke, Paul M. German, Blair A. Graham, Carlos A. Mota, Calvin K. Schram, Barry C. Trudell
  • Publication number: 20080021183
    Abstract: A process for the production of an ethylene alpha-olefin copolymer is disclosed. The process includes polymerizing ethylene and at least one alpha-olefin by contacting the ethylene and the at least one alpha-olefin with a metallocene catalyst in at least one gas phase reactor at a reactor pressure of from 0.7 to 70 bar and a reactor temperature of from 20° C to 150° C to form an ethylene alpha-olefin copolymer. The resulting ethylene alpha-olefin copolymer may have a density of 0.927 g/cc or greater and environmental stress crack resistance (ESCR) of 500 hr or more when measured according to ASTM 1693/B in 10% Igepal.
    Type: Application
    Filed: June 25, 2007
    Publication date: January 24, 2008
    Applicant: UNIVATION TECHNOLOGIES, LLC
    Inventors: Blair Graham, Mark Ossowski, James Farley, Rainer Kolb
  • Patent number: 7307126
    Abstract: Polyethylene blend compositions suitable for rotomolding, rotomolded articles, and processes for rotomolding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.4 to 3.0 g/10 min and a density of from 0.910 to 0.930 g/cm3; and a second polyethylene having a melt index of 10 to 30 g/10 min and a density of 0.945 to 0.975 g/cm3. The composition has a density of from 0.930 to 0.955 g/cm3 and a melt index of 1.5 to 12 g/10 min, and the first and second polyethylenes differ in density by from 0.030 to 0.048 g/cm3. These compositions exhibit improved physical properties, such as Environmental Stress Crack Resistance and Izod Impact Strength.
    Type: Grant
    Filed: March 14, 2005
    Date of Patent: December 11, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Arnold Lustiger, David J. Lohse, Blair A. Graham
  • Patent number: 7022770
    Abstract: Polyethylene blend compositions suitable for injection molding, injection molded articles, and processes for injection molding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.1 to 3.0 g/10 min and a density of from 0.905 to 0.938 g/cm3; and a second polyethylene having a melt index of 10 to 500 g/10 min and a density of 0.945 to 0.975 g/cm3. The composition has a density of from 0.920 to 0.973 g/cm3 and a melt index of 2 to 200 g/10 min, and the density of the second polyethylene is from 0.037 to 0.062 g/cm3 greater than the density of the first polyethylene. These compositions exhibit improved physical properties, such as Environmental Stress Crack Resistance, relative to conventional compositions of similar melt index and density.
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: April 4, 2006
    Assignee: Exxon Mobil Chemical Patents Inc.
    Inventors: Arnold Lustiger, David J. Lohse, Blair A. Graham
  • Patent number: 6969741
    Abstract: Polyethylene blend compositions suitable for rotomolding, rotomolded articles, and processes for rotomolding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.4 to 3.0 g/10 min and a density of from 0.910 to 0.930 g/cm3; and a second polyethylene having a melt index of 10 to 30 g/10 min and a density of 0.945 to 0.975 g/cm3. The composition has a density of from 0.930 to 0.955 g/cm3 and a melt index of 1.5 to 12 g/10 min, and the first and second polyethylenes differ in density by from 0.030 to 0.048 g/cm3. These compositions exhibit improved physical properties, such as Environmental Stress Crack Resistance and Izod Impact Strength.
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: November 29, 2005
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Arnold Lustiger, David J. Lohse, Blair A. Graham
  • Publication number: 20050256266
    Abstract: Polyethylene blend compositions suitable for rotomolding, rotomolded articles, and processes for rotomolding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.4 to 3.0 g/10 min and a density of from 0.910 to 0.930 g/cm3; and a second polyethylene having a melt index of 10 to 30 g/10 min and a density of 0.945 to 0.975 g/cm3. The composition has a density of from 0.930 to 0.955 g/cm3 and a melt index of 1.5 to 12 g/10 min, and the first and second polyethylenes differ in density by from 0.030 to 0.048 g/cm3. These compositions exhibit improved physical properties, such as Environmental Stress Crack Resistance and Izod Impact Strength. Articles produced from the compositions may also exhibit improved impact resistance properties, enhanced ductile break properties, and improved deflection resistance, which represents a combination of creep and fatigue resistance.
    Type: Application
    Filed: July 21, 2005
    Publication date: November 17, 2005
    Inventors: Arnold Lustiger, David Lohse, Blair Graham, Ronald Cooke
  • Publication number: 20050256271
    Abstract: Polyethylene blend compositions suitable for injection molding, injection molded articles, and processes for injection molding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.1 to 3.0 g/10 min and a density of from 0.905 to 0.938 g/cm3; and a second polyethylene having a melt index of 10 to 500 g/10 min and a density of 0.945 to 0.975 g/cm3. The compositions have a density of from 0.920 to 0.973 g/cm3 and a melt index of 2 to 200 g/10 min, and the density of the second polyethylene is from 0.037 to 0.062 g/cm3 greater than the density of the first polyethylene. The compositions exhibit improved physical properties, such as Environmental Stress Crack Resistance, relative to conventional compositions of similar melt index and density. In certain embodiments, the compositions, and articles produced therefrom, also exhibit an improved balance of toughness properties and processability properties.
    Type: Application
    Filed: July 21, 2005
    Publication date: November 17, 2005
    Inventors: Arnold Lustiger, David Lohse, Blair Graham, Barry Trudell
  • Publication number: 20050215719
    Abstract: Polyethylene blend compositions suitable for rotomolding, rotomolded articles, and processes for rotomolding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.4 to 3.0 g/10 min and a density of from 0.910 to 0.930 g/cm3; and a second polyethylene having a melt index of 10 to 30 g/10 min and a density of 0.945 to 0.975 g/cm3. The composition has a density of from 0.930 to 0.955 g/cm3 and a melt index of 1.5 to 12 g/10 min, and the first and second polyethylenes differ in density by from 0.030 to 0.048 g/cm3. These compositions exhibit improved physical properties, such as Environmental Stress Crack Resistance and Izod Impact Strength.
    Type: Application
    Filed: March 14, 2005
    Publication date: September 29, 2005
    Inventors: Arnold Lustiger, David Lohse, Blair Graham
  • Publication number: 20040062942
    Abstract: Polyethylene blend compositions suitable for rotomolding, rotomolded articles, and processes for rotomolding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.4 to 3.0 g/10 min and a density of from 0.910 to 0.930 g/cm3; and a second polyethylene having a melt index of 10 to 30 g/10 min and a density of 0.945 to 0.975 g/cm3. The composition has a density of from 0.930 to 0.955 g/cm3 and a melt index of 1.5 to 12 g/10 min, and the first and second polyethylenes differ in density by from 0.030 to 0.048 g/cm3. These compositions exhibit improved physical properties, such as Environmental Stress Crack Resistance and Izod Impact Strength.
    Type: Application
    Filed: September 18, 2003
    Publication date: April 1, 2004
    Inventors: Arnold Lustiger, David J. Lohse, Blair A. Graham
  • Publication number: 20040063861
    Abstract: Polyethylene blend compositions suitable for injection molding, injection molded articles, and processes for injection molding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.1 to 3.0 g/10 min and a density of from 0.905 to 0.938 g/cm3; and a second polyethylene having a melt index of 10 to 500 g/10 min and a density of 0.945 to 0.975 g/cm3. The composition has a density of from 0.920 to 0.973 g/cm3 and a melt index of 2 to 200 g/10 min, and the density of the second polyethylene is from 0.037 to 0.062 g/cm3 greater than the density of the first polyethylene. These compositions exhibit improved physical properties, such as Environmental Stress Crack Resistance, relative to conventional compositions of similar melt index and density.
    Type: Application
    Filed: September 18, 2003
    Publication date: April 1, 2004
    Inventors: Arnold Lustiger, David J. Lohse, Blair A, Graham
  • Patent number: 5612097
    Abstract: A method for grafting maleic anhydride groups to the surface of polyolefins s described. The method uses an excited inert gas phase species in contact with the polyolefin and solid maleic anhydride. The surface functionality is identified by X-ray photoelectron spectroscopy and transmission Fourier transform infrared spectroscopy. The modified polyolefin has an increased ability to form a thermal bond with metals, including aluminum.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: March 18, 1997
    Assignees: The University of Western Ontario, in trust for Surface Science Western, The University of Western Ontario, The Institute For Chemical Science and Technology
    Inventors: Renate Foerch, Duncan H. Hunter, Mary J. Walzak, Blair A. Graham
  • Patent number: 5100947
    Abstract: A dynamically vulcanized composition comprising a polyolefin resin and an elastomer is provided in which a major portion of fillers or specified additives are present in the polyolefin resin. A process for producing the dynamically vulcanized composition is also provided including the addition of the fillers and/or specified additives after the dynamic vulcanization step. The compositions have improved stiffness to impact balance.
    Type: Grant
    Filed: March 19, 1990
    Date of Patent: March 31, 1992
    Assignee: Advanced Elastomer Systems, L. P.
    Inventors: Robert C. Puydak, Donald R. Hazelton, Blair A. Graham, Narayanaswami R. Dharmarajan
  • Patent number: 4769279
    Abstract: Low viscosity ethylene acrylic copolymers and blends thereof with other fiber-forming polymers for spunbond and melt blown nonwoven applications. Ethylene/alkyl (meth) acrylate, especially ethylene/methyl acrylate copolymers are found to be suitable for fiber-forming operations, especially melt blowing when the melt index is at least about 10. Blends of the copolymer with other fiber-forming polymers are especially suitable for fiber-forming operations. The nonwoven products of the copolymers and blends of the invention show a good degree of elongation making them especially suitable for certain fabric applications and new uses. The nonwoven fabrics are comprised of fibers of the copolymers and blends, having a diameter of about 1-40 microns. Larger fibers may also be formed by various techniques.
    Type: Grant
    Filed: September 22, 1986
    Date of Patent: September 6, 1988
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Blair A. Graham