Patents by Inventor Leonora Nurcaj-Dreshaj

Leonora Nurcaj-Dreshaj 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).

  • Water-soluble or dispersible polyester resins made from terephthalate plastic materials useful as dispersant resins for inks
    Patent number: 11236213
    Abstract: The present invention provides water-soluble or water-dispersible polyester resins prepared by depolymerizing a terephthalate plastic material in an alcoholysis/glycolysis reaction, and re-polymerizing the product by reacting with a polybasic acid and/or anhydride. The polyester resins of the invention contain 70% to 95% by weight of the terephthalate material, based on the total weight of the composition. The polyester resins of the present invention are useful as dispersants, for example in pigment preparations, and as binders in let-down varnishes, inks, coatings, etc, and as adhesion promoters in aqueous-based inks.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: February 1, 2022
    Assignee: Sun Chemical Corporation
    Inventors: Jürgen Dieker, Robert Deighton, Kai-Uwe W. Gaudl, Leonora Nurcaj-Dreshaj
  • WATER-SOLUBLE OR DISPERSIBLE POLYESTER RESINS MADE FROM TEREPHTHALATE PLASTIC MATERIALS USEFUL AS DISPERSANT RESINS FOR INKS
    Publication number: 20210246282
    Abstract: The present invention provides water-soluble or water-dispersible polyester resins prepared by depolymerizing a tereph-thalate plastic material in an alcoholysis/glycolysis reaction, and re-polymerizing the product by reacting with a polybasic acid and/or anhydride. The polyester resins of the invention contain 70% to 95% by weight of the terephthalate material, based on the total weight of the composition. The polyester resins of the present invention are useful as dispersants, for example in pigment preparations, and as binders in let-down varnishes, inks, coatings, etc, and as adhesion promoters in aqueous-based inks.
    Type: Application
    Filed: January 6, 2020
    Publication date: August 12, 2021
    Applicant: SUN CHEMICAL CORPORATION
    Inventors: Jürgen Dieker, Robert Deighton, Kai-Uwe W. Gaudl, Leonora Nurcaj-Dreshaj