Patents Represented by Law Firm Christensen O'Johnson & Kindness PLLC
  • Polymeric polycarboxylic acid crosslinked cellulosic fibers
    Patent number: 5998511
    Abstract: Cellulosic fibers intrafiber crosslinked with a polymeric polycarboxylic acid crosslinking agent are disclosed. In one embodiment, the polymeric polycarboxylic acid is polyacrylic acid and, in another embodiment, the polycarboxylic acid is polymaleic acid. Methods for forming cellulosic fibers having stable intrafiber crosslinks and for forming crosslinked cellulosic fibers having low knot level are also disclosed.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: December 7, 1999
    Assignee: Weyerhaeuser Company
    Inventors: John A. Westland, Richard A. Jewell, Amar N. Neogi