The Compound Contains Esther (e.g., Cellulose Sulfate) Patents (Class 516/158)
  • Polyether polyesters having anionic functionality
    Patent number: 7041707
    Abstract: Polyester compositions and methods of producing and using same are provided. The polyester compositions at least include an anionic diacid monomer or diester monomer thereof and a polyether. The polyester compositions of the present invention can be effectively utilized, for example, to treat crude oil during production and refinery processing.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: May 9, 2006
    Assignee: Nalco Company
    Inventor: Carl W. Hahn