Sulfur Containing Organic Compound Patents (Class 264/192)
  • Highly absorbent fibers of rayon with sulfonic acid polymer incorporated
    Patent number: 4242242
    Abstract: Highly absorbent cellulosic fibers are made by incorporating therein from 2%-35% based on the weight of cellulose of a polymerized acrylamido-2-methylpropane sulfonic acid or a copolymer of acrylamido-2-methylpropane sulfonic acid with any one or combination of other polymerizable hydrophilic monomers such as acrylic acid, methacrylic acid, acrylonitrile and the like.
    Type: Grant
    Filed: June 10, 1977
    Date of Patent: December 30, 1980
    Assignee: Akzona Incorporated
    Inventor: Thomas C. Allen
  • Flame retardant regenerated cellulose containing a phosphoric acid or thiophosphoric acid amide
    Patent number: 4193805
    Abstract: The present invention concerns novel flameproofed regenerated cellulose incorporating, as flameproofing agent, a phosphoric acid or thiophosphoric acid mono- or triamide.
    Type: Grant
    Filed: July 12, 1978
    Date of Patent: March 18, 1980
    Assignee: Sandoz Ltd.
    Inventors: Claudine Mauric, Rainer Wolf