Patents by Inventor Charles M. Buchanan

Charles M. Buchanan 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: 7276546
    Abstract: The invention relates to methods of making carbohydrate and polyol esters suitable for use as plasticizers for polymer compositions. The invention also relates to plasticized polymer compositions comprising such carbohydrate and polyol esters. The invention also relates to articles prepared from such plasticized polymer compositions. The invention further relates to methods of using these compositions.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: October 2, 2007
    Assignee: Eastman Chemical Company
    Inventors: Charles M. Buchanan, Norma L. Buchanan, Kevin J. Edgar, Juanelle L. Lambert
  • Patent number: 7189798
    Abstract: This invention relates to new cyclodextrin derivatives, processes for producing these cyclodextrin derivatives, and inclusion complexes comprised of the new cyclodextrin derivatives and guest molecules, as well as methods of making such materials and related materials and methods of using the same.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: March 13, 2007
    Assignee: Eastman Chemical Company
    Inventors: Charles M. Buchanan, Steven N. Falling, Juanelle L. Lambert, Shannon E. Large, Jozsef Szejtli, Lajos Szente, Laszlo Jicsinszky
  • Patent number: 6977275
    Abstract: The invention relates to methods of making carbohydrate and polyol esters suitable for use as plasticizers for polymer compositions. The invention also relates to plasticized polymer compositions comprising such carbohydrate and polyol esters. The invention also relates to articles prepared from such plasticized polymer compositions. The invention further relates to methods of using these compositions.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: December 20, 2005
    Assignee: Eastman Chemical Company
    Inventors: Charles M. Buchanan, Norma L. Buchanan, Kevin J. Edgar, Juanelle L. Lambert
  • Publication number: 20040063663
    Abstract: The present invention is directed to a method of making an inclusion complex comprising an acylated cyclodextrin host molecule and a guest molecule, wherein the method comprises the steps of: a) contacting the acylated cyclodextrin host molecule and the guest molecule to form an inclusion complex; and b) precipitating the inclusion complex in an aqueous medium. The present invention is further directed to an inclusion complex comprising an acylated cyclodextrin host molecule and a guest molecule, wherein the guest molecule comprises from about 2% (wt.) to about 15% (wt.) of the inclusion complex. Moreover, the present invention relates to a composition comprising a polymer and an inclusion complex, wherein the inclusion complex comprises an acylated cyclodextrin host molecule and a guest molecule and medical devices and solid pharmaceutical compositions comprised thereof.
    Type: Application
    Filed: September 30, 2003
    Publication date: April 1, 2004
    Inventors: Charles M. Buchanan, Matthew D. Wood, Jozsef Szejtli, Lajos Szente, Maria Vikmon
  • Publication number: 20040054164
    Abstract: This invention relates to new cyclodextrin derivatives, processes for producing these cyclodextrin derivatives, and inclusion complexes comprised of the new cyclodextrin derivatives and guest molecules, as well as methods of making such materials and related materials and methods of using the same.
    Type: Application
    Filed: June 24, 2003
    Publication date: March 18, 2004
    Applicant: Eastman Chemical Company
    Inventors: Charles M. Buchanan, Steven N. Falling, Juanelle L. Lambert, Shannon E. Large, Jozsef Szejtli, Lajos Szente, Laszlo Jicsinszky
  • Publication number: 20030207407
    Abstract: The invention provides a method of obtaining a cellulose material from corn fiber wherein the method comprises the steps of: (a) heating a mixture of corn fiber and a liquid; (b) contacting the mixture of step (a) with a protease enzyme, thereby providing a proteolyzed corn fiber and a liquid; (c) separating the liquid from the proteolyzed corn fiber; (d) contacting the proteolyzed corn fiber at least once with an alkaline extractant, thereby providing an insoluble cellulose material and a first liquid comprising arabinoxylan; (e) separating the insoluble cellulose material from the first liquid comprising arabinoxylan at a temperature of at or above about 60° C.; and (f) rinsing the insoluble cellulose material to remove essentially all alkali, thereby providing a cellulose material having a cellulose content of at least about 50% and consisting essentially of cellulose I. Cellulose esters and ethers are also prepared from the derivatizable cellulose prepared according to the methods herein.
    Type: Application
    Filed: December 19, 2002
    Publication date: November 6, 2003
    Applicant: Eastman Chemical Company
    Inventors: Charles M. Buchanan, Norma L. Buchanan, John S. Debenham, Michael C. Shelton, Matthew D. Wood
  • Publication number: 20030199087
    Abstract: In one aspect, the invention provides a method of separating a corn fiber lipid fraction having phytosterol esters and phytosterols wherein the method comprises the steps of: (a) providing a mixture of unground corn fiber and water; (b) separating the liquid from the corn fiber, thereby providing a water wet corn fiber; and (c) extracting the water wet corn fiber with at least one polar organic solvent, thereby providing a corn fiber lipid fraction/polar organic solvent solution having phytosterol esters and phytosterols.
    Type: Application
    Filed: March 6, 2003
    Publication date: October 23, 2003
    Applicant: Eastman Chemical Company
    Inventors: Charles M. Buchanan, Norma L. Buchanan, John S. Debenham, Michael C. Shelton, Matthew D. Wood
  • Publication number: 20030188340
    Abstract: In one aspect, the invention provides a corn fiber lipid fraction containing phytosterols and phytosterol esters obtained via solvent extraction of a proteolyzed corn fiber, wherein the concentration of phytosterols and phytosterol esters in the lipid fraction is at least about 1.4 times greater than the concentration of phytosterols and phytosterol esters in the lipid fraction of a nonproteolyzed corn fiber.
    Type: Application
    Filed: March 6, 2003
    Publication date: October 2, 2003
    Applicant: Eastman Chemical Company
    Inventors: Charles M. Buchanan, Norma L. Buchanan, John S. Debenham, Michael C. Shelton, Matthew D. Wood
  • Publication number: 20030171458
    Abstract: The invention relates to methods of making carbohydrate and polyol esters suitable for use as plasticizers for polymer compositions. The invention also relates to plasticized polymer compositions comprising such carbohydrate and polyol esters. The invention also relates to articles prepared from such plasticized polymer compositions. The invention further relates to methods of using these compositions.
    Type: Application
    Filed: January 10, 2003
    Publication date: September 11, 2003
    Inventors: Charles M. Buchanan, Norma L. Buchanan, Kevin J. Edgar, Juanelle L. Lambert
  • Patent number: 6610671
    Abstract: This invention relates to new cyclodextrin derivatives, processes for producing these cyclodextrin derivatives, and inclusion complexes comprised of the new cyclodextrin derivatives and guest molecules, as well as methods of making such materials and related materials and methods of using the same.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: August 26, 2003
    Assignee: Eastman Chemical Company
    Inventors: Charles M. Buchanan, Steven N. Falling, Juanelle L. Lambert, Shannon E. Large, Jozsef Szejtli, Lajos Szente, Laszlo Jicsinszky
  • Patent number: 6589760
    Abstract: The invention provides a method of separating from corn fiber a lipid fraction having phytosterol esters and phytosterols where the method has the steps of: (a) heating an aqueous mixture of unground corn fiber; (b) contacting the mixture of step (a) with at least one enzyme suitable for digesting starch for a time and at a temperature suitable to provide a mixture of an essentially destarched corn fiber and a liquid comprising soluble carbohydrates; (c) contacting the mixture of step (a) or (b) with a protease enzyme to provide a proteolyzed corn fiber and a liquid; (d) separating the liquid of step (c) from the corn fiber to provide a destarched, proteolyzed corn fiber; and (e) extracting the destarched, proteolyzed corn fiber with at least one organic solvent. A corn fiber lipid fraction/organic solvent solution having phytosterol esters and phytosterols is provided.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: July 8, 2003
    Assignee: Eastman Chemical Company
    Inventors: Charles M. Buchanan, Norma L. Buchanan, John S. Debenham, Michael C. Shelton, Matthew D. Wood
  • Patent number: 6586212
    Abstract: The invention provides a method of obtaining a cellulose material from corn fiber wherein the method comprises the steps of: (a) heating a mixture of corn fiber and a liquid; (b) contacting the mixture of step (a) with a protease enzyme, thereby providing a proteolyzed corn fiber and a liquid; (c) separating the liquid from the proteolyzed corn fiber; (d) contacting the proteolyzed corn fiber at least once with an alkaline extractant, thereby providing an insoluble cellulose material and a first liquid comprising arabinoxylan; (e) separating the insoluble cellulose material from the first liquid comprising arabinoxylan at a temperature of at or above about 60° C.; and (f) rinsing the insoluble cellulose material to remove essentially all alkali, thereby providing a cellulose material having a cellulose content of at least about 50% and consisting essentially of cellulose I. Cellulose esters and ethers are also prepared from the derivatizable cellulose prepared according to the methods herein.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: July 1, 2003
    Assignee: Eastman Chemical Company
    Inventors: Charles M. Buchanan, Norma L. Buchanan, John S. Debenham, Michael C. Shelton, Matthew D. Wood
  • Patent number: 6562938
    Abstract: 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: Grant
    Filed: December 20, 2001
    Date of Patent: May 13, 2003
    Assignee: Eastman Chemical Company
    Inventors: William A. Haile, Leron R. Dean, Richard L. McConnell, Mark E. Tincher, Alan W. White, Charles M. Buchanan
  • Patent number: 6495656
    Abstract: 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: Grant
    Filed: May 12, 2000
    Date of Patent: December 17, 2002
    Assignee: Eastman Chemical Company
    Inventors: William A. Haile, Leron R. Dean, Richard L. McConnell, Mark E. Tincher, Alan W. White, Charles M. Buchanan
  • Patent number: 6479467
    Abstract: This invention relates to a new composition of matter which comprises hydroxybutenyl derivatives of cyclodextrins (HBenCD) or mixed ethers of cyclodextrins where at least one of the ether substituents is hydroxybutenyl (HBenRCD where R is an ether substituent other than hydroxybutenyl). This invention also relates to novel processes for the preparation of cyclodextrin ethers. This invention further relates to inclusion complexes formed between HBenCD or HBenRCD and guest molecules. Such inclusion complexes are useful in pharmaceutical, cosmetic, and food applications. Furthermore, this invention relates to the incorporation of HBenCD or HBenRCD or their inclusion complexes in thermoplastic materials, textiles or membranes.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: November 12, 2002
    Assignee: Eastman Chemical Company
    Inventors: Charles M. Buchanan, Daniel W. Dixon, Jr., Juanelle L. Lambert, Ricky J. Offerman, Matthew D. Wood
  • Publication number: 20020132960
    Abstract: 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: Application
    Filed: December 20, 2001
    Publication date: September 19, 2002
    Applicant: Eastman Chemical Company
    Inventors: William A. Haile, Leron R. Dean, Richard L. McConnell, Mark E. Tincher, Alan W. White, Charles M. Buchanan
  • Publication number: 20020128468
    Abstract: This invention relates to new cyclodextrin derivatives, processes for producing these cyclodextrin derivatives, and inclusion complexes comprised of the new cyclodextrin derivatives and guest molecules, as well as methods of making such materials and related materials and methods of using the same.
    Type: Application
    Filed: January 11, 2002
    Publication date: September 12, 2002
    Inventors: Charles M. Buchanan, Steven N. Falling, Juanelle L. Lambert, Shannon E. Large, Jozsef Szejtli, Lajos Szente, Laszlo Jicsinszky
  • Patent number: 6388069
    Abstract: In one aspect, the invention provides a method of extracting arabinoxylan from corn fiber wherein the method comprises the steps of: (a) heating an aqueous mixture of corn fiber and a liquid; (b) contacting the mixture of step (a) with a protease enzyme, thereby providing a proteolyzed corn fiber and a liquid; (c) separating the liquid from the proteolyzed corn fiber; (d) contacting the proteolyzed corn fiber at least once with an alkaline extractant, thereby providing an insoluble cellulose material and a liquid comprising arabinoxylan; (e) separating the insoluble cellulose material from the liquid comprising arabinoxylan; and (f) reducing the volume of the liquid comprising arabinoxylan by removing excess alkaline extractant, thereby providing a concentrated liquid comprising from about 10% to about 50% solids, wherein the solids comprise arabinoxylan. In a further aspect, the invention provides methods of preparing novel arabinoxylan esters and ethers.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: May 14, 2002
    Assignee: Eastman Chemical Company
    Inventors: Charles M. Buchanan, Norma L. Buchanan, John S. Debenham, Michael C. Shelton, Matthew D. Wood
  • Patent number: 6352845
    Abstract: In one aspect, the invention provides methods of obtaining at least one monosaccharide from corn fiber the method comprises the steps of: (a) heating an aqueous mixture of corn fiber and a liquid; (b) contacting the mixture of step (a) with a protease enzyme, thereby providing a proteolyzed corn fiber and a liquid; (c) separating the liquid from the proteolyzed corn fiber; (d) contacting the proteolyzed corn fiber at least once with an alkaline extractant, thereby providing an insoluble cellulose material and a liquid comprising arabinoxylan; (e) separating the insoluble cellulose material from the liquid comprising arabinoxylan; (f) reducing the volume of the liquid comprising arabinoxylan by removing excess alkaline extractant, thereby providing a concentrated liquid comprising from about 10 to about 50% solids, wherein the solids comprise arabinoxylan; and (g) hydrolyzing the arabinoxylan from step (f) in the presence of a catalyst and a solvent, thereby providing a mixture comprising at least one monosacc
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: March 5, 2002
    Assignee: Eastman Chemical Company
    Inventors: Charles M. Buchanan, Norma L. Buchanan, John S. Debenham, Michael C. Shelton, Matthew D. Wood, Michael J. Visneski, Bhaskar K. Arumugam, John K. Sanders, Larry R. Lingerfelt, Jr., Larry Blair
  • Publication number: 20020025946
    Abstract: The present invention is directed to a method of making an inclusion complex comprising an acylated cyclodextrin host molecule and a guest molecule, wherein the method comprises the steps of: a)contacting the acylated cyclodextrin host molecule and the guest molecule to form an inclusion complex; and b) precipitating the inclusion complex in an aqueous medium. The present invention is further directed to an inclusion complex comprising an acylated cyclodextrin host molecule and a guest molecule, wherein the guest molecule comprises from about 2% (wt.) to about 15% (wt.) of the inclusion complex. Moreover, the present invention relates to a composition comprising a polymer and an inclusion complex, wherein the inclusion complex comprises an acylated cyclodextrin host molecule and a guest molecule and medical devices and solid pharmaceutical compositions comprised thereof.
    Type: Application
    Filed: April 26, 2001
    Publication date: February 28, 2002
    Inventors: Charles M. Buchanan, Matthew D. Wood, Jozsef Szejtli, Lajos Szente, Maria Vikmon