Patents Examined by Michale R. Lusignan
  • Absorbent articles and methods for their preparation
    Patent number: 4154898
    Abstract: Water swellable absorbent articles, made from solutions of carboxylic polyelectrolytes, together with methods for their preparation, and a composition useful to make said articles are disclosed. The articles are cured and/or crosslinked with polyamide-polyamine epichlorohydrin adducts by heating and/or removing substantially all of the solvent from the precursor composition.The absorbent articles are useful as surgical sponges, diapers, tampons, meat trays, bath mats and the like.
    Type: Grant
    Filed: October 17, 1977
    Date of Patent: May 15, 1979
    Assignee: The Dow Chemical Company
    Inventor: Nelson D. Burkholder, Jr.