Patents Assigned to Hunstman International LLC
  • Formulations of fluorescent whitening agents in dispersed form
    Patent number: 8679199
    Abstract: The present invention relates to an aqueous dispersion containing (a) a fluorescent whitening agent, (b) a dispersing agent, (c) a ?-1,3-glucan and, optionally, (d) a vat dye and the use of the aqueous dispersions for whitening synthetic fibers, in particular polyester and polyacrylonitrile.
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: March 25, 2014
    Assignee: Hunstman International LLC
    Inventors: Serge Gruetter, Jean-Jacques Donze, Serge Schroeder, Andrea Frey