Patents Represented by Attorney Betty Joy Boshears
  • Patent number: 8309624
    Abstract: This invention relates to a blend comprising: (A) about 80% by weight to about 99.99% by weight of at least one polyester comprising terephthalic acid residues, 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and 1,4-cyclohexanedimethanol residues; and (B) about 0.01% by weight to about 20% by weight of at least one antimicrobial agent; said weight percentages being based on the total weight of the blend.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: November 13, 2012
    Assignee: Eastman Chemical Company
    Inventors: Michael Eugene Donelson, James Collins Maine, Gary Stuart Hawkins, Jeff Scott Howell
  • Patent number: 8299204
    Abstract: Described as one aspect of the invention are polyester compositions containing: (I) at least one polyester which comprises: (a) dicarboxylic acid component comprising: (i) 70 to 100 mole % of terephthalic acid residues; (ii) 0 to 30 mole % of aromatic dicarboxylic acid residues having up to 20 carbons atoms; and (iii) 0 to 10 mole % of aliphatic dicarboxylic acid residues having up to 16 carbon atoms; and (b) a glycol component comprising: (i) 1 to 99 mole % of 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; and (ii) 1 to 99 mole % of cyclohexanedimethanol residues; and (II) at least one thermal stabilizer chosen from at least one alkyl phosphate esters, aryl phosphate esters, mixed alkyl aryl phosphate esters, reaction products thereof, and mixtures thereof; wherein the total mole % of the dicarboxylic acid component is 100 mole %, and wherein the total mole % of the glycol component is 100 mole %.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: October 30, 2012
    Assignee: Eastman Chemical Company
    Inventors: Ted Calvin Germroth, Gary Wayne Connell, Emmett Dudley Crawford, Thomas Joseph Pecorini, Douglas Stephen McWilliams, Benjamin Fredrick Barton, Damon Bryan Shackelford
  • Patent number: 8093316
    Abstract: Disclosed are polymer blends comprising a mixture of (A) at least one polyester prepared by the reaction of at least one diol with at least one dicarboxylic acid or dialkyl ester thereof in the presence of a metallic catalyst; (B) at least one phosphite ester compound; and (C) at least one hindered amine light stabilizer. The polymer blends exhibit improved color, especially when used as a component of a polyester/polycarbonate blend.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: January 10, 2012
    Assignee: Eastman Chemical Company
    Inventors: Jason Clay Pearson, Douglas Stephens McWilliams, Gether Irick, Jr., Max Allen Weaver
  • Patent number: 7985827
    Abstract: Described are polyester compositions comprising (a) a dicarboxylic acid component comprising terephthalic acid residues; optionally, aromatic dicarboxylic acid or aliphatic dicarboxylic acid residues; 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues, wherein said 2,2,4,4-tetramethyl-1,3-cyclobutanediol contains certain cis to trans ratios; and 1,4-cyclohexanedimethanol residues.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: July 26, 2011
    Assignee: Eastman Chemical Company
    Inventors: Emmett Dudley Crawford, David Scott Porter, Gary Wayne Connell
  • Patent number: 7740941
    Abstract: This invention relates to thermoplastic article having one or more decorative materials embedded therein which is obtained by applying heat and pressure to one or more laminates wherein at least one of said laminates comprises, in order, (1) an upper sheet material; (2) one or more decorative materials; and (3) a lower sheet material; wherein the upper and lower sheet materials are formed from a polyester/aromatic polycarbonate blend wherein the thermoplastic article comprises at least one polyester composition comprising at least one polyester which comprises terephthalic acid and 2,2,4,4-tetramethyl-1,3-cyclobutanediol.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: June 22, 2010
    Assignee: Eastman Chemical Company
    Inventors: Emmett Dudley Crawford, David Scott Porter, Gary Wayne Connell