Patent ID: 7201778

Claim:
A process for producing an ionic crosslinked fibrous material, the process comprising: (a) providing an aqueous solution of a low molecular weight anion, wherein the low molecular weight anion is selected from the group consisting of polyacrylic acid, 1,2,3,4-butanetetracarboxylic acid, oxalic acid, malic acid, and citric acid; (b) providing a cationic fibrous material; (c) padding the cationic fibrous material through the aqueous solution of a low molecular weight anion to form a padded cationic fibrous material; (d) drying the padded cationic fibrous material at a first temperature range to form a dried cationic fibrous material; and (e) curing the dried cationic fibrous material at a second temperature range to form a crosslinked ionic fibrous material.