Patents by Inventor Sarah Jayne Webb

Sarah Jayne Webb 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).

  • Polyesters of 2,6-naphthalenedicarboxylic acid having improved hydrolytic stability
    Patent number: 5910363
    Abstract: This invention relates to a polyester composition comprising:(A) 95 to 99.90% by weight of a polyester comprising from about 85 to 100 mole % of 2,6-naphthalenedicarboxylic acid and 85 to 100 mole % of at least one aliphatic glycol having from 2 to 16 carbon atoms, based on the total mole percentage for the glycol portion and for the acid portion of said polyester each equalling 100 mole %, and(B) 0.1 to 5.0% by weight of one or more polymeric carbodiimides.These polyester compositions result in improved hydrolytic stability in end products such as fiber, monofilament, films, thermoformed articles, containers and sheeting based on naphthalenedicarboxylic acid and ethylene glycol.
    Type: Grant
    Filed: May 6, 1998
    Date of Patent: June 8, 1999
    Assignee: Eastman Chemical Company
    Inventors: Martin Emerson Rogers, Sarah Jayne Webb
  • Polyesters of 2,6-naphthalenedicarboxylic acid having improved hydrolytic stability
    Patent number: 5804626
    Abstract: This invention relates to a polyester composition comprising:(A) 95 to 99.90% by weight of a polyester comprising from about 85 to 10.0 mole % of 2,6-naphthalenedicarboxylic acid and 85 to 100 mole % of at least one aliphatic glycol having from 2 to 16 carbon atoms, based on the total mole percentage for the glycol portion and for the acid portion of said polyester each equalling 100 mole %, and(B) 0.1 to 5.0% by weight of one or more polymeric carbodiimides.These polyester compositions result in improved hydrolytic stability in end products such as fiber, monofilament, films, thermoformed articles, containers and sheeting based on naphthalen.
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: September 8, 1998
    Inventors: Martin Emerson Rogers, Sarah Jayne Webb