Patents by Inventor Blair Graham
Blair 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).
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Patent number: 8247065Abstract: 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: GrantFiled: April 24, 2007Date of Patent: August 21, 2012Assignee: 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
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Publication number: 20080224349Abstract: 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: ApplicationFiled: November 5, 2007Publication date: September 18, 2008Inventors: Jing Wang, Blair A. Graham, Anne-Marie C. Forcum, Paul R. Willey
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Patent number: 7396878Abstract: 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: GrantFiled: July 21, 2005Date of Patent: July 8, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Arnold Lustiger, David John Lohse, Blair A. Graham, Barry C. Trudell
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Patent number: 7396881Abstract: 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: GrantFiled: July 21, 2005Date of Patent: July 8, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Arnold Lustiger, David John Lohse, Blair A. Graham, Ronald Cooke
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Publication number: 20080038533Abstract: 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: ApplicationFiled: April 24, 2007Publication date: February 14, 2008Inventors: Steven A. Best, Bernard L. Bossaert, Ronald N. Cooke, Paul M. German, Blair A. Graham, Carlos A. Mota, Calvin K. Schram, Barry C. Trudell
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Publication number: 20080021183Abstract: 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: ApplicationFiled: June 25, 2007Publication date: January 24, 2008Applicant: UNIVATION TECHNOLOGIES, LLCInventors: Blair Graham, Mark Ossowski, James Farley, Rainer Kolb
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Patent number: 7307126Abstract: 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: GrantFiled: March 14, 2005Date of Patent: December 11, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Arnold Lustiger, David J. Lohse, Blair A. Graham
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Patent number: 7022770Abstract: 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: GrantFiled: September 18, 2003Date of Patent: April 4, 2006Assignee: Exxon Mobil Chemical Patents Inc.Inventors: Arnold Lustiger, David J. Lohse, Blair A. Graham
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Patent number: 6969741Abstract: 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: GrantFiled: September 18, 2003Date of Patent: November 29, 2005Assignee: ExxonMobil Chemical Patents Inc.Inventors: Arnold Lustiger, David J. Lohse, Blair A. Graham
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Publication number: 20050256271Abstract: 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: ApplicationFiled: July 21, 2005Publication date: November 17, 2005Inventors: Arnold Lustiger, David Lohse, Blair Graham, Barry Trudell
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Publication number: 20050256266Abstract: 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: ApplicationFiled: July 21, 2005Publication date: November 17, 2005Inventors: Arnold Lustiger, David Lohse, Blair Graham, Ronald Cooke
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Publication number: 20050215719Abstract: 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: ApplicationFiled: March 14, 2005Publication date: September 29, 2005Inventors: Arnold Lustiger, David Lohse, Blair Graham
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Publication number: 20040062942Abstract: 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: ApplicationFiled: September 18, 2003Publication date: April 1, 2004Inventors: Arnold Lustiger, David J. Lohse, Blair A. Graham
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Publication number: 20040063861Abstract: 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: ApplicationFiled: September 18, 2003Publication date: April 1, 2004Inventors: Arnold Lustiger, David J. Lohse, Blair A, Graham
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Patent number: 5612097Abstract: 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: GrantFiled: June 2, 1995Date of Patent: March 18, 1997Assignees: The University of Western Ontario, in trust for Surface Science Western, The University of Western Ontario, The Institute For Chemical Science and TechnologyInventors: Renate Foerch, Duncan H. Hunter, Mary J. Walzak, Blair A. Graham
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Patent number: 5100947Abstract: 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: GrantFiled: March 19, 1990Date of Patent: March 31, 1992Assignee: Advanced Elastomer Systems, L. P.Inventors: Robert C. Puydak, Donald R. Hazelton, Blair A. Graham, Narayanaswami R. Dharmarajan
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Patent number: 4769279Abstract: 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: GrantFiled: September 22, 1986Date of Patent: September 6, 1988Assignee: Exxon Chemical Patents Inc.Inventor: Blair A. Graham