Patents by Inventor William R. Darnell
William R. Darnell 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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Publication number: 20020107319Abstract: The invention provides an amide-type polymer/first polymer blend comprising: a) a polymer colloid system comprising a first polymer comprising a non-core shell polymer and b) and amide polymer. Blends where the polymer colloid system comprises latex polymer particles, a surfactant, and a liquid continuous phases are also described.Type: ApplicationFiled: March 29, 2002Publication date: August 8, 2002Applicant: Eastman Chemical CompanyInventors: David Logan Murray, Allan Scott Jones, Wesley R. Hale, William R. Darnell
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Patent number: 6417239Abstract: The invention pertains to methods for preparing modified condensation polymers wherein the steps include: (a) preparing a polymer colloid system comprising a first polymer dispersed in a liquid continuous phase; (b) introducing the polymer colloid system into a glycolysis reaction medium prior to or during a glycolysis reaction wherein the glycolysis reaction medium comprises a polyester, copolyester, polyesteramide, polycarbonate or a mixture thereof; wherein the glycolysis reaction medium optionally comprises a diol component; and polymerizing the fully or partially glycolyzed polyester, copolyester, polyesteramide, polycarbonate or mixture thereof, thereby providing a condensation polymer/first polymer matrix.Type: GrantFiled: July 17, 2000Date of Patent: July 9, 2002Assignee: Eastman Chemical CompanyInventors: David Logan Murray, Allan Scott Jones, Wesley R. Hale, William R. Darnell, Douglas Weldon Carico, Jr., Sara Stanley Wells
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Patent number: 6403698Abstract: The invention provides a method of making an amide-type polymer/first polymer blend comprising the steps of: a) preparing a polymer colloid system comprising a first polymer dispersed in a liquid continuous phase; b) introducing the polymer colloid system into an amide-type polymerization reaction medium prior to or during the reaction, wherein the reaction medium comprises 1) a diacid component and a diamine component, an oligomer of a diacid and a diamine component, or a mixture thereof; and c) polymerizing the components of b)1, thereby providing an amide-type polymer/first polymer blend. Polymer blends made by the methods herein are also provided.Type: GrantFiled: March 2, 2000Date of Patent: June 11, 2002Assignee: Eastman Chemical CompanyInventors: David Logan Murray, Allan Scott Jones, Wesley R. Hale, William R. Darnell
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Publication number: 20020035200Abstract: The invention provides a method of making an amide-type polymer/silicone polymer blend comprising the steps of preparing a silicone polymer emulsion comprising a silicone polymer dispersed in a liquid continuous phase; introducing the silicone polymer emulsion into an amide-type polymerization reaction medium prior to or during the reaction, wherein the reaction medium comprises 1) a diacid component and a diamine component, an oligomer of a diacid and a diamine component, or a mixture thereof, and polymerizing the components of b)1, thereby providing an amide-type polymer/silicone polymer blend. A amide-type polymer/silicone polymer blends are also provided.Type: ApplicationFiled: September 20, 2001Publication date: March 21, 2002Applicant: Eastman Chemical CompanyInventors: Allan Scott Jones, William R. Darnell, David Logan Murray, Wesley R. Hale
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Patent number: 6353052Abstract: The invention provides a method of making an amide-type polymer/silicone polymer blend comprising the steps of preparing a silicone polymer emulsion comprising a silicone polymer dispersed in a liquid continuous phase; introducing the silicone polymer emulsion into an amide-type polymerization reaction medium prior to or during the reaction, wherein the reaction medium comprises 1) a diacid component and a diamine component, an oligomer of a diacid and a diamine component, or a mixture thereof; and polymerizing the components of b)1, thereby providing an amide-type polymer/silicone polymer blend. A amide-type polymer/silicone polymer blends are also provided.Type: GrantFiled: March 2, 2000Date of Patent: March 5, 2002Assignee: Eastman Chemical CompanyInventors: Allan Scott Jones, William R. Darnell, David Logan Murray, Wesley R. Hale
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Patent number: 6180748Abstract: The invention relates to a process of deactivating a polycarbonate, by mixing a polycarbonate having an active alkali metal catalyst residue therein with a deactivator represented of a formula of: wherein, R1-R7 and R9 are, independently, hydrogen; aliphatic hydrocarbon of from 1 to 20 carbon atoms; substituted aromatic hydrocarbon of from 6 to 20 carbon atoms; or unsubstituted aromatic hydrocarbon of from 6 to 20 carbon atoms; R8 and R10-R13 are, independently, substituted or unsubstituted aromatic hydrocarbon of from 6 to 20 carbon atoms; or aliphatic hydrocarbon of from 1 to 20 carbon atoms; A is a tetrafunctional hydrocarbon group; and x is an integer of from 1 to 3, at a temperature and time sufficient to deactivate the alkali metal catalyst to form a deactivated polycarbonate, wherein the deactivated catalyst is not removed from the deactivated polycarbonate. The invention also relates to a polycarbonate having a deactivated metal catalyst.Type: GrantFiled: December 23, 1997Date of Patent: January 30, 2001Assignee: Eastman Chemical CompanyInventors: William R. Darnell, Theodore R. Walker, Jean C. Fleischer
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Patent number: 6114474Abstract: The invention relates to a process of deactivating a polycarbonate, by mixing a polycarbonate containing an active alkali metal catalyst residue with a carboxylic acid, but not removing the deactivated catalyst. The invention further relates to a process of deactivating a polycarbonate, by mixing a solid state polycarbonate containing an active alkali metal catalyst and a carboxylic acid, followed by heating the mixture of step at a temperature to melt the mixture and deactivate the alkali metal catalyst, wherein the deactivated catalyst is not removed. The invention further relates to a process of making a polycarbonate, by polymerizing a polycarbonate in the presence of an alkali metal catalyst to produce an activated polycarbonate, and mixing the activated polycarbonate with a carboxylic acid to deactivate the alkali metal catalyst and form a polycarbonate, wherein the deactivated alkali metal catalyst is not removed from the polycarbonate.Type: GrantFiled: December 23, 1997Date of Patent: September 5, 2000Assignee: Eastman Chemical CompanyInventors: Theodore R. Walker, William R. Darnell, Jean C. Fleischer
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Patent number: 6037436Abstract: The invention relates to a method for preparing a polycarbonate, by mixing (i) 2,2,4,4-tetramethyl-1,3-cyclobutanediol, (ii) dimethyl carbonate, and (iii) a basic catalyst, and heating components (i)-(iii) to produce an intermediate, followed by heating the intermediate at a temperature of less than or equal to 300.degree. C. to produce the polycarbonate. The invention further relates to the polycarbonates produced by the methods of the present invention.Type: GrantFiled: December 23, 1997Date of Patent: March 14, 2000Assignee: Eastman Chemical CompanyInventors: Theodore R. Walker, William R. Darnell, Jean C. Fleischer
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Patent number: 5962622Abstract: The invention relates to a method for preparing a polycarbonate, by mixing a compound having the structure I: ##STR1## and a basic catalyst, and heating the mixture to produce the polycarbonate. The invention also relates to poly(2,2,4,4-tetramethyl-1,3-cyclobutylene carbonate) with an inherent viscosity of at least 0.7 dL/g. The invention also relates to an article made from the polycarbonate and a blend containing poly(2,2,4,4-tetramethyl-1,3-cyclobutylene carbonate).Type: GrantFiled: December 23, 1997Date of Patent: October 5, 1999Assignee: Eastman Chemical CompanyInventors: William R. Darnell, John C. Morris
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Patent number: 5856553Abstract: The invention relates to the compounds having the structures I and II: ##STR1## The invention also relates to a method of making the compound having the structure I by mixing 2,2,4,4-tetramethyl-1,3-cyclobutanediol; dimethyl carbonate; and a basic catalyst, and heating the mixture.Type: GrantFiled: December 23, 1997Date of Patent: January 5, 1999Assignee: Eastman Chemical CompanyInventors: Theodore R. Walker, Jean C. Fleischer, William R. Darnell
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Patent number: 5260409Abstract: The present invention relates to liquid crystalline polyesters which have surprisingly low isotropic transition temperatures. The invention further relates to a new process for preparing containers which have more uniform properties made from certain liquid crystalline polyesters. Also, the present invention relates to molded objects comprising certain liquid crystalline polyesters. The liquid crystalline polyesters disclosed herein are derived from 2,6-naphthalenedicarboxylic acid, 4,4'-biphenol, hydroquinone, and p-hydroxybenzoic acid.Type: GrantFiled: December 14, 1992Date of Patent: November 9, 1993Assignee: Eastman Kodak CompanyInventors: Winston J. Jackson, Jr., William R. Darnell
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Patent number: 5066766Abstract: Disclosed is a process for the preparation of poly(ester-carbonates) wherein (1) an aromatic diol, (2) methyl phenyl carbonate and (3) an alkyl carboxylate ester component selected from an aromatic dicarboxylate ester, a hydroxy aromatic carboxylate ester or a mixture thereof are contacted in the presence of a transesterification/polycondensation catalyst under transesterification/polycondensation conditions of pressure and temperature.Type: GrantFiled: April 13, 1990Date of Patent: November 19, 1991Assignee: Eastman Kodak CompanyInventors: Winston J. Jackson, Jr., William R. Darnell
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Patent number: 4820794Abstract: A new process for preparing polyketones (1) from at least one aromatic compound and at least one aromatic, aliphatic, and/or cycloaliphatic dicarboxylic acid or (2) from at least one self-polymerizable aromatic monocarboxylic acid or (3) from a mixture of (1) and (2) is disclosed.Type: GrantFiled: April 15, 1987Date of Patent: April 11, 1989Assignee: Eastman Kodak CompanyInventors: William R. Darnell, Winston J. Jackson, Jr.
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Patent number: 4743630Abstract: Disclosed are new poly(ester-ether-carbonates) which may be prepared by heating aromatic diol polycarbonates and poly(ester-carbonates) with ethylene carbonate, optionally in the presence of a suitable catalyst or promoter.Type: GrantFiled: August 4, 1986Date of Patent: May 10, 1988Assignee: Eastman Kodak CompanyInventors: William R. Darnell, Winston J. Jackson, Jr.
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Patent number: 4623675Abstract: Disclosed are new poly(ether-carbonates) which may be prepared by heating aromatic diol polycarbonates with ethylene carbonate, optionally in the presence of a suitable catalyst or promoter.Type: GrantFiled: July 31, 1985Date of Patent: November 18, 1986Assignee: Eastman Kodak CompanyInventors: William R. Darnell, Winston J. Jackson, Jr.
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Patent number: 4551521Abstract: A linear, essentially crystalline, thermoplastic copolyester having an I.V. of about 0.4-1.2 and a melting point of about 60.degree.-130.degree. C., said copolyester having repeat units from adipic acid, 1,4-cyclohexanedimethanol and about 30-0.5 mole % of aliphatic coglycol having 2-8 carbon atoms, said copolyester having a bonding temperature of about 90.degree.-120.degree. C.Type: GrantFiled: December 26, 1984Date of Patent: November 5, 1985Assignee: Eastman Kodak CompanyInventors: Richard L. McConnell, Abraham J. Cox, William R. Darnell
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Patent number: 4533729Abstract: The present invention provides a novel process for preparing specified amorphous polycarbonate polyols. The process comprises reacting phosgene, a branched-chain polyhydric alcohol, and a straight chain polyhydric alcohol in the presence of a solvent and in the absence of a catalyst at a temperature of about 60.degree. to 100.degree. C., and then contacting the amorphous polycarbonate product in the reaction mixture with a catalytic amount of a tertiary amine at reflux temperature for a period of time of at least about 30 minutes. The straight chain polyhydric alcohol is employed in an amount of about 3 to 40 mole percent, based upon the total amount of polyhydric alcohol present in the reaction system. A preferred branched-chain polyhydric alcohol is neopentyl glycol, and a preferred straight chain polyhydric alcohol is 1,6-hexanediol. Preferred solvents are xylene and toluene, and preferred tertiary amines are triethylamine and pyridine.Type: GrantFiled: November 14, 1983Date of Patent: August 6, 1985Assignee: Eastman Kodak CompanyInventors: Gordon C. Newland, William R. Darnell
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Patent number: 4507256Abstract: A new process for foaming cellulose acetate rods consists of blending the cellulose acetate with a suitable plasticizer, a nucleating agent, cyclic ethylene carbonate, and a co-reactant for the ethylene carbonate and extruding into a foamed rod. Suitable co-reactants include aromatic diol polyesters, polycarbonates, and poly(ester-carbonates) and monomeric or polymeric materials containing the ##STR1## group, which have melting or flow points of less than about 250.degree. C.Type: GrantFiled: May 26, 1983Date of Patent: March 26, 1985Assignee: Eastman Kodak CompanyInventors: Winston J. Jackson, Jr., William R. Darnell
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Patent number: 4360648Abstract: Process for the preparation of polyesters and poly(ester-carbonates) comprising heating aromatic diol polycarbonates and esters of dicarboxylic acids in the presence of ester exchange and polymerization catalysts.Type: GrantFiled: November 17, 1980Date of Patent: November 23, 1982Assignee: Eastman Kodak CompanyInventors: Winston J. Jackson, Jr., William R. Darnell
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Patent number: 4350805Abstract: Process for preparation of poly(ester-carbonates) from aromatic diol bis(alkylcarbonates) and esters of dicarboxylic, and/or carboxylate-carbonate esters of hydroxy acids by suitably heating the reactants in the presence of a suitable polymerization catalyst.Type: GrantFiled: November 17, 1980Date of Patent: September 21, 1982Assignee: Eastman Kodak CompanyInventors: Winston J. Jackson, Jr., William R. Darnell