Patents Represented by Attorney, Agent or Law Firm Bernie Graves
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Patent number: 6762276Abstract: Disclosed is a process of hydrogenating a polyester oligomer containing terephthalic acid residues wherein terephthalic acid residues are converted to residues of 1,4-cyclohexanedicarboxylic acid. Also disclosed is a process for the preparation of polyesters containing 1,4-cyclohexanedicarboxylic acid residues by first hydrogenating a polyester oligomer containing terephthalic acid residues and then reacting the resulting oligomer with one or more polyester-forming reactants to produce a higher molecular weight polyester.Type: GrantFiled: February 27, 2002Date of Patent: July 13, 2004Assignee: Eastman Chemical CompanyInventors: Charles Edwan Sumner, Jr., Bruce LeRoy Gustafson, Robert Lin
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Patent number: 6723768Abstract: Thermoplastic compositions of polyester/polycarbonate blends have reduced yellowness and improved thermal and melt stability when the polyester is produced with a reduced level of a titanium-containing catalyst in an amount of from about 1 to about 30 ppm elemental titanium, with ppm based on the total weight of the polyester.Type: GrantFiled: March 27, 2002Date of Patent: April 20, 2004Assignee: Eastman Chemical CompanyInventors: Valerie Sue Adams, Emmett Dudley Crawford, Michael Eugene Donelson, Douglas Stephens McWilliams
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Patent number: 6703454Abstract: The present invention provides a process for recovering a dihydroxy compound from a fluid stream that results from the preparation of a polyester by use of an adsorption system to selectively recover the dihydroxy compound.Type: GrantFiled: December 7, 2001Date of Patent: March 9, 2004Assignee: Eastman Chemical CompanyInventor: Bruce Roger DeBruin
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Patent number: 6703115Abstract: There are provided novel multilayer films comprising a layer comprising a thermoplastic polymer, such as an aliphatic-aromatic copolyester (AAPE), with or without filler, and a layer comprising a filled thermoplastic polymer. The polymers in the layers may be the same or different. The multilayer films are preferably characterized by having increased moisture vapor transmission rate (MVTR). Also provided are novel articles of manufacture comprising the novel multilayer films.Type: GrantFiled: January 25, 2002Date of Patent: March 9, 2004Assignee: Eastman Chemical CompanyInventors: Wesley Raymond Hale, Ted Calvin Germroth
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Patent number: 6682793Abstract: There are provided multi-layered structures comprising at least one layer that is an ethylene/alpha-olefin copolymer having a density of less than 0.916 g/cc and a melting peak temperature of greater than 118° C. The multi-layered structures comprise at least two layers. Also provided are articles of manufacture produced from the multi-layer structures such as films, containers, pouches, packages, tubing and the like.Type: GrantFiled: September 2, 1999Date of Patent: January 27, 2004Assignee: Eastman Chemical CompanyInventors: James Douglas Small, Jr., Jeffrey James Vanderbilt, Kathleen Diane Greer, James Edward Rhein
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Patent number: 6673892Abstract: There is disclosed a process for reducing residual free radical polymerizable monomer content of a polymer comprising contacting the polymer, in molten form, with a free radical initiator, such as di-tert-amylperoxide.Type: GrantFiled: April 29, 2002Date of Patent: January 6, 2004Assignee: Eastman Chemical CompanyInventors: Jose Pedro Martinez, Jeffrey James Vanderbilt, Kenneth Alan Dooley
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Patent number: 6660817Abstract: A novel continuous gas phase polymerization process for producing polyethylene and interpolymers of ethylene and at least one other olefin is provided wherein a non-aromatic halogenated hydrocarbon is used in a specified amount such that the activity of the titanium, zirconium and/or hafnium containing Ziegler-Natta catalyst is increased.Type: GrantFiled: July 24, 2001Date of Patent: December 9, 2003Assignee: Eastman Chemical CompanyInventors: Don Kent Farrer, Kenneth Alan Dooley, Glenn Edward Moore, Larry Allen Noble
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Patent number: 6649694Abstract: There is disclosed a process for producing films from ethylene-&agr;-olefin interpolymers, which films have, in combination, the properties of improved surface haze, improved stiffness, and improved color. The process involves incorporating from about 0.1 to less than 1% by weight, of a functionalized ethylene homopolymer or functionalized ethylene interpolymer into an ethylene-&agr;-olefin interpolymer-containing composition, and forming a film from the composition.Type: GrantFiled: December 21, 2001Date of Patent: November 18, 2003Assignee: Eastman Chemical CompanyInventors: Kurt Joseph Jordens, Stephen Wayne Coe, Scott Arnold Hanson, Jeffrey James Vanderbilt, Bradley Scott Westbrook
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Patent number: 6646073Abstract: A novel continuous gas phase polymerization process for producing polyethylene and interpolymers of ethylene and at least one other olefin is provided wherein a saturated halogenated hydrocarbon is used in a specified amount such that the activity of the titanium containing Ziegler-Natta catalyst is increased.Type: GrantFiled: July 24, 2001Date of Patent: November 11, 2003Assignee: Eastman Chemical CompanyInventors: Don Kent Farrer, Kenneth Alan Dooley, Glenn Edward Moore, Larry Allen Noble
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Patent number: 6641920Abstract: There is described an ultraviolet protected multi-layer structure comprising a layer produced from a copolyester/polycarbonate blend, and a protective UV absorbing compound-containing polycarbonate cap layer. Also described is a process for producing the multi-layer structures, and articles of manufacture produced from the multi-layer structures.Type: GrantFiled: February 8, 2002Date of Patent: November 4, 2003Assignee: Eastman Chemical CompanyInventors: Roy Lee Conn, James Carl Williams, John Edward Christopher Willham
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Patent number: 6635726Abstract: A novel continuous gas phase polymerization process for producing polyethylene and interpolymers of ethylene and at least one other olefin is provided wherein chloroform is used in a specified amount such that the activity of the titanium containing Ziegler-Natta catalyst is increased.Type: GrantFiled: July 24, 2001Date of Patent: October 21, 2003Assignee: Eastman Chemical CompanyInventors: Don Kent Farrer, Kenneth Alan Dooley, Glenn Edward Moore, Larry Allen Noble
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Patent number: 6632390Abstract: In a process for producing a profile by profile extrusion, a melt of a polyester composition is extruded through a die to form a profile. The processability of the polyester composition is improved by the addition of a branching agent, which provides increased melt strength and increased high shear thinning. The polyester composition has an inherent viscosity of at least 0.65 dl/g. The diacid component of the polyester composition has from 100 to 98.0 mole percent of residues of a primary acid selected from terephthalic acid, naphthalenedicarboxylic acid, isophthalic acid and mixtures thereof. The glycol component of the polyester composition has from 100 to 98.0 mole percent of residues of a primary glycol selected from ethylene glycol, 1,4-cyclohexanedimethanol, diethylene glycol, neopentyl glycol, and mixtures thereof. The polyester composition has from 0.05 to 2.Type: GrantFiled: April 28, 2000Date of Patent: October 14, 2003Assignee: Eastman Chemical CompanyInventors: Marcus David Shelby, Julian Harold Scott Jensen, Daniel Christopher Cobb, Marc Alan Strand
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Patent number: 6616998Abstract: A heat sealable packaging film producing a peelable seal is formed from a blend of 99 to 75 weight percent of a copolyester and 1 to 25 weight percent of an epoxy-containing impact modifying polymer. The copolyester has a diacid component of at least 50 mole percent terephthalic acid, naphthalenedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, or mixtures thereof and diol component of about 90 to 35 mole percent ethylene glycol and 10 to 65 mole percent of at least one of diethylene glycol or 1,4-cyclohexanedimethanol.Type: GrantFiled: April 2, 2001Date of Patent: September 9, 2003Assignee: Eastman Chemical CompanyInventors: Kathleen Diane Greer, James Edward Rhein, Hubertus Jacobus Wilhelmus Moolenaar, Scott Ellery George, Richard Leon McConnell
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Patent number: 6569957Abstract: There is described a novel blend composition comprising specified amounts of any polycarbonate and specified amounts of a specific copolyester comprising terephthalic acid, naphthalenedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, or mixtures thereof; isophthalic acid; and 1,4-cyclohexanedimethanol. Also described are films and sheets produced from the novel blend compositions that are thermoformable without having to pre-dry the films and sheets. Further, articles of manufacture produced from the novel blend compositions are described.Type: GrantFiled: September 5, 2001Date of Patent: May 27, 2003Assignee: Eastman Chemical CompanyInventors: James Carl Williams, John Guthrie Thompson, Roy Lee Conn
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Patent number: 6551688Abstract: A calendered film or sheet of a polyester resin composition has a haze value of less than 5 percent. The polyester resin composition comprises a polyester having a crystallization half-time from a molten state of at least 5 minutes and an additive comprising (i) a fatty acid or a salt of a fatty acid containing more than 18 carbon atoms and (ii) an ester wax comprising a fatty acid containing more than 18 carbon atoms with an alcohol containing from 2 to 28 carbon atoms, wherein the ratio of the fatty acid or salt of the fatty acid to the ester wax is 1:1 or greater. Also, the present invention is a process for producing such calendered film or sheet having a haze value of less than 5 percent.Type: GrantFiled: February 28, 2001Date of Patent: April 22, 2003Assignee: Eastman Chemical CompanyInventors: Eric Jon Moskala, Kevin Douglas Horton