Patents Examined by Ba K. Thrinh
  • Monoesters and macrocyclic diester of phthalic acid and synthesis thereof
    Patent number: 5994564
    Abstract: Monoesters and macrocyclic diesters of 2,2,4-trimethyl-1,3-pentanediol and phthalic acid or a derivative thereof are described. Methods by which such monoesters and diesters may be prepared are also described. The mono- and diesters according to the invention are useful in the preparation of clear, hard thermoplastic polymers. The thermoplastic polymers are useful in coatings, inks, reinforced plastics and packaging materials.
    Type: Grant
    Filed: August 19, 1998
    Date of Patent: November 30, 1999
    Assignee: Eastman Chemical Company
    Inventor: Dale E. Van Sickle