Patents Represented by Attorney B. J. Boshears
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Patent number: 6872674Abstract: The present invention is a non-woven web or composite structure comprising (a) from about 50 to about 90 weight percent of a natural cellulose fiber; (b) from about 10 to about 50 weight percent of a binder fiber component; (c) from 0 to about 20 weight percent of a filler; and (d) from 0 to about 8 weight percent of a dye or pigment.Type: GrantFiled: September 17, 2002Date of Patent: March 29, 2005Assignee: Eastman Chemical CompanyInventors: Freddie Wayne Williams, Eric Eugene Ellery
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Patent number: 6846440Abstract: A polyester resin composition is calendered to produce a film or a sheet. The polyester resin composition is a polyester having a crystallization half time from a molten state of at least 5 minutes combined with an additive for preventing sticking of the polyester to calendering rolls.Type: GrantFiled: October 31, 2002Date of Patent: January 25, 2005Assignee: Eastman Chemical CompanyInventors: Paul Mary Flynn, Richard Leon McConnell, Hubertus Jacobus Wilhelmus Moolenaar, Timothy Michael Sanders
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Patent number: 6808805Abstract: 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: June 11, 2003Date of Patent: October 26, 2004Assignee: Eastman Chemical CompanyInventors: Marcus David Shelby, Julian Harold Scott Jensen, Daniel Christopher Cobb, Marc Alan Strand
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Polyester having improved crystallization behavior and extrusion blow molded articles made therefrom
Patent number: 6740377Abstract: A PCT copolyester composition having at least about 70 mole % terephthalic acid and at least about 70 mole % 1,4-cyclohexanedimethanol and an inherent viscosity of greater than about 0.9 dL/g is prepared by solid state polymerizing a copolyester composition having a starting inherent viscosity of from about 0.4 to about 0.8 dL/g for a period of from about 1 minute to 100 hours and at a temperature of from about 140° C. to about 2° C. below the melting point of the copolyester to produce a copolyester having an inherent viscosity of greater than about 0.9 dL/g. Another aspect of the present invention is an extrusion blow molded article made from the copolyester prepared by the solid state polymerization process.Type: GrantFiled: September 12, 2002Date of Patent: May 25, 2004Assignee: Eastman Chemical CompanyInventors: Thomas Joseph Pecorini, Harold Eugene Dobbs -
Patent number: 6730401Abstract: A multi-layer structure comprises at least one electrostatic dissipative outer layer and a conductive core layer. The outer layer comprises a material selected from the group consisting of an inherently dissipative polymer, an inherently dissipative polymer blended with a non-conductive matrix polymer, an inherently conductive polymer blended with a non-conductive matrix polymer in an amount sufficient to impart a surface resistivity of greater than 105 and less than 1012 ohms/square, and mixtures thereof. The core layer comprises a material selected from the group consisting of an inherently conductive polymer, an inherently conductive polymer blended with a non-conductive matrix polymer, a conductive filler blended with a non-conductive matrix polymer, and mixtures thereof.Type: GrantFiled: July 9, 2001Date of Patent: May 4, 2004Assignee: Eastman Chemical CompanyInventors: William Carl Jackson, Douglas Stephens McWilliams
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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: 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: 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: 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: 6605680Abstract: Low color, aromatic modified C5 hydrocarbon resins are disclosed. The resins are predominantly an aromatic modified piperylene resin. The resins are useful as tackifiers in hot melt adhesives and hot melt pressure sensitive adhesives.Type: GrantFiled: April 7, 2000Date of Patent: August 12, 2003Assignee: Eastman Chemical Resins, Inc.Inventors: Chretien P. L. C. Donker, Ester E. C.G. Gielens, Gerard A. Verrijzer
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Patent number: 6586505Abstract: This invention relates to aqueous resin dispersions comprising water, resin, a surfactant, and a caseinate. This invention also relates to the process for producing the aqueous resin dispersion and to adhesives formulated with the aqueous resin dispersion.Type: GrantFiled: January 21, 1997Date of Patent: July 1, 2003Assignee: Eastman Chemical Resins, Inc.Inventors: Michael J. Cronin, Peter M. Dunckley, George J. Kutsek
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Patent number: 6582818Abstract: The invention relates to fibers, particularly binder fibers, made from polyesters and the polyesters themselves. The polyesters are the product of a reaction between a glycol component and a dicarboxylic acid component where the glycol component contains at least 50 mole % of a four carbon diol, such as 1,4-butanediol, or a six carbon diol, such as 1,6-hexanediol or a mixture of a four carbon and six carbon diol. Typically, the polyesters of the invention are semicrystalline and/or crystalline and have a specific melting point ranging from about 140 to about 185° C. The polyesters of the invention may be formed into a variety of products, especially binder fibers for nonwoven fabrics, textile/industrial yarns and fabrics, composites and other molded articles.Type: GrantFiled: October 23, 2002Date of Patent: June 24, 2003Assignee: Eastman Chemical CompanyInventors: William A. Haile, Leron R. Dean, Richard L. McConnell, Kishan C. Khemani
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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: 6562938Abstract: This invention relates to binary blends of cellulose esters and aliphatic-aromatic copolyesters, cellulose esters and aliphatic polyesters as well as ternary blends of cellulose esters and/or aliphatic polyesters and/or aliphatic-aromatic copolyesters and/or polymeric compounds as well as fibers, nonwovens, molded objects, and films prepared therefrom.Type: GrantFiled: December 20, 2001Date of Patent: May 13, 2003Assignee: Eastman Chemical CompanyInventors: William A. Haile, Leron R. Dean, Richard L. McConnell, Mark E. Tincher, Alan W. White, Charles M. Buchanan
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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
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Patent number: 6497950Abstract: The invention relates to fibers, particularly binder fibers, made from polyesters and the polyesters themselves. The polyesters are the product of a reaction between a glycol component and a dicarboxylic acid component where the glycol component contains at least 50 mole % of a four carbon diol, such as 1,4-butanediol, or a six carbon diol, such as 1,6-hexanediol or a mixture of a four carbon and six carbon diol. Typically, the polyesters of the invention are semicrystalline and/or crystalline and have a specific melting point ranging from about 140 to about 185° C. The polyesters of the invention may be formed into a variety of products, especially binder fibers for nonwoven fabrics, textile/industrial yarns and fabrics, composites and other molded articles.Type: GrantFiled: August 4, 2000Date of Patent: December 24, 2002Assignee: Eastman Chemical CompanyInventors: William A. Haile, Leron R. Dean, Richard L. McConnell, Kishan C. Khemani
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Patent number: 6432496Abstract: This invention relates High Density Polyethylene (HDPE) films having improved barrier properties. More particularly, the invention relates to HDPE films containing hydrocarbon resins having improved moisture barrier. The invention also relates to masterbatches for use in producing High Density Polyethylene films having improved barrier properties.Type: GrantFiled: June 5, 1998Date of Patent: August 13, 2002Assignee: Eastman Chemical CompanyInventor: Daniel W. Klosiewicz
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Patent number: 6426389Abstract: A novel process for preparing functionalized polypropylenes entailing apportioned introduction of free radical initiator is described. Also described are novel functionalized polypropylenes having a yellowness index color of at least 77 and a Brookfield Thermosel viscosity of greater than 7000 cP at 190° C. Preferably, the functionalized polypropylenes are further characterized by having an acid number greater than 6 milligrams of KOH per gram of polymer.Type: GrantFiled: January 31, 2001Date of Patent: July 30, 2002Assignee: Eastman Chemical CompanyInventor: Stephen Wayne Coe
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Patent number: 6395823Abstract: The present invention relates to a composite made by the process of melt mixing (a) a polymer having at least one isocyanate reactive group, wherein the polymer is from 30 to 90% by weight of the composite; (b) a thermoplastic polyurethane at from 0.1 to less than 10% by weight of the composite; and (c) a reinforcing fiber at from 9.9 to 60% by weight of the composite, wherein the sum of the weight percentages of components (a)-(c) is equal to 100%, wherein the polymer (a) is not a polyamide. The invention further relates to a composite prepared by the process of melt mixing (a) a polymer having at least one isocyanate reactive group, wherein the polymer is from 25 to 90% by weight of the composite; (b) a thermoplastic polyurethane at from 0.1 to 10% by weight of the composite; (c) a reinforcing fiber at from 9.8 to 60% by weight of the composite, and (d) an epoxy compound at from 0.1 to 5% by weight of the composite, wherein the sum of the weight percentages of components (a)-(d) is equal to 100%.Type: GrantFiled: January 31, 2000Date of Patent: May 28, 2002Assignee: Eastman Chemical CompanyInventors: Andrew E. Brink, Jeffrey T. Owens