Patents Examined by Margaret Elnsmann
  • Thickeners for paper dye compositions
    Patent number: 6858255
    Abstract: The present invention is a thickened dye composition and method of applying same to a paper web that produces colored or patterned paper having good bleed resistance. The dye composition of the invention includes a binder; a dye; a thickener selected from the group consising of polyvinylpyrrlidone homopolymers, polyvinylpyrrolidone copolymers, and mixtures thereof; and water. The present invention also includes colored or patterned papers prepared using this conposition.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: February 22, 2005
    Assignee: BASF Corporation
    Inventors: James A. Deckers, Stephen S. Jose, Michael T. Jennings