Patents by Inventor Glen Dennis Shields

Glen Dennis Shields 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: 10526444
    Abstract: Disclosed is a free flowing aqueous composition comprising (a) at least one polyester consisting of the residues of 2,2,4,4-tetramethylcyclobutane-1,3-diol; 2,2-bis(hydroxymethyl) dimethylolpropionic acid; and at least one polycarboxylic acid and/or a derivative thereof selected from the group consisting of 1,2-cyclohexanedicarboxylic, 1,3-cyclohexanedicarboxylic, 1,4-cyclohexanedicarboxylic and adipic acid, wherein said polyester has an acid number in the range of 10 to 100 mg KOH/g, a hydroxyl number in the range of 20 to 120 mg KOH/g and a number average molecular weight of 500 to 5000; (b) at least one neutralizing agent; and (c) water. The composition is useful in aqueous coating compositions.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: January 7, 2020
    Assignee: Eastman Chemical Company
    Inventors: David Lott Inglefield, Jr., Robert Lee Eagan, Zhou Li, Glen Dennis Shields, Jeremy Richard Lizotte
  • Patent number: 10167628
    Abstract: A stable emulsion having a fluid medium; a phase change material (PCM) comprising a straight, branched and/or cyclic aliphatic moiety having from 3 to 18 carbon atoms, polymers, and copolymers having residues of the straight, branched and/or cyclic aliphatic moiety; and a modified cyclodextrin having at least one functional moiety capable of forming a stable emulsion with the PCM in the fluid medium. The invention further includes a modified paint or surface coating having from 10 to 99 weight % of a base coating and from 1 to 90 weight % of the stable emulsion admixed therein.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: January 1, 2019
    Assignee: Eastman Chemical Company
    Inventors: Meera Angayarkanni Sidheswaran, Pruthesh Hariharrao Vargantwar, Leslie Sharon Depew, Glen Dennis Shields, Jennifer Lynn Cogar
  • Publication number: 20180002482
    Abstract: Disclosed is a free flowing aqueous composition comprising (a) at least one polyester comprising residues of at least one cyclobutanediol; at least one 2,2-bis(hydroxymethyl)alkylcarboxylic acid and/or a derivative thereof; and at least one polycarboxylic acid and/or a derivative thereof; (b) at least one neutralizing agent; and (c) water. The composition is useful in aqueous coating compositions.
    Type: Application
    Filed: September 12, 2017
    Publication date: January 4, 2018
    Applicant: Eastman Chemical Company
    Inventors: David Lott Inglefield, JR., Robert Lee Eagan, Zhou Li, Glen Dennis Shields, Jeremy Richard Lizotte
  • Publication number: 20170167133
    Abstract: A stable emulsion having a fluid medium; a phase change material (PCM) comprising a straight, branched and/or cyclic aliphatic moiety having from 3 to 18 carbon atoms, polymers, and copolymers having residues of the straight, branched and/or cyclic aliphatic moiety; and a modified cyclodextrin having at least one functional moiety capable of forming a stable emulsion with the PCM in the fluid medium. The invention further includes a modified paint or surface coating having from 10 to 99 weight % of a base coating and from 1 to 90 weight % of the stable emulsion admixed therein.
    Type: Application
    Filed: December 9, 2015
    Publication date: June 15, 2017
    Applicant: Eastman Chemical Company
    Inventors: Meera Angayarkanni Sidheswaran, Pruthesh Hariharrao Vargantwar, Leslie Sharon Depew, Glen Dennis Shields, Jennifer Lynn Cogar
  • Publication number: 20170088665
    Abstract: Disclosed is a polyester composition comprising a polyester further comprising (a) at least one cyclobutanediol; (b) at least one 2,2-bis(hydroxymethyl)alkylcarboxylic acid and/or a derivative thereof; and (c) at least one polycarboxylic acid and/or a derivative thereof. This polyester composition can be useful in several areas including but not limited to thermoplastic polyesters, curable polyesters, inks, paints, composites, coating compositions, for example, waterborne coatings, water-dispersible coatings, solvent-borne coatings, and powder coatings.
    Type: Application
    Filed: September 25, 2015
    Publication date: March 30, 2017
    Applicant: EASTMAN CHEMICAL COMPANY
    Inventors: David Lott INGLEFIELD, JR., Robert Lee EAGAN, Zhou LI, Glen Dennis SHIELDS, Jeremy Richard LIZOTTE
  • Patent number: 6001922
    Abstract: This invention provides the preparation of water-dispersible polyester/acrylic hybrids via a two-stage emulsion polymerization process. For example, methacrylic acid and/or 2-hydroxyethyl methacrylate are copolymerized with styrene/acrylic monomers to yield a relatively hydrophilic and hydro-plasticized first stage. Subsequent additions of hydrophobic monomers to this first stage "seed" results in an inversion of the latex such that the more hydrophilic first stage is at the particle surface. This results not only in improved stability of the resulting latex without the use of additional surfactants, as evidenced by the production of reduced amounts of coagulum, while it also offers relatively low minimum filming temperatures due to the hydroplasticization of the shell of the particle. Furthermore, the use of the water-dispersible polyester results in extremely fine latex particle sizes which can significantly enhance coating properties such as film gloss and clarity.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: December 14, 1999
    Assignee: Eastman Chemical Company
    Inventors: Mark Dwight Clark, Hieu Duy Phan, James Russell Salisbury, Glen Dennis Shields
  • Patent number: 5891950
    Abstract: A water-based ink composition is described. The ink composition contains a pigment and a polymer latex. The polymer latex may be a polymeric (polyamino) enamine latex or a mixture of a polymeric (polyamino) enamine latex and an acetoacetoxy-functional polymer latex. The inks are particularly useful as laminating and surface-printing inks. Methods of printing are also described.
    Type: Grant
    Filed: May 21, 1997
    Date of Patent: April 6, 1999
    Assignee: Eastman Chemical Company
    Inventors: Martha Jean Collins, Glen Dennis Shields, Rebecca Reid Stockl, James Wayne Taylor