Superabsorbent coated fibers and method for their preparation
AssigneeJames River Corporation
InventorsLeon Katz, David H. Hollenberg
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Abstract
Superabsorbent synthetic fibers are prepared by a method wherein segments of synthetic fibers are coated with a solution of (a) a hydrophilic, uncomplexed polymer and (b) a complexing agent, and the coated fibers are fluff or flash dried causing the polymer to complex and to form a superabsorbent coating on the synthetic fibers in situ.
Claims26
A method of preparing superabsorbent synthetic fibers coated with a water absorbent polymer which comprises (1) preparing an aqueous solution of an anionic polyelectrolyte and a polyvalent metal salt, said anionic polyelectrolyte being maintained water-soluble in the presence of said polyvalent metal salt by the addition of a neutralizing agent, (2) adding synthetic fibers to the polymeric solution to coat said fibers therewith, and (3) fluff drying said coated synthetic fibers to form a complex of said polyelectrolyte thereon in situ.
A superabsorbent material consisting of a synthetic fiber coated with a substantially dry water-absorbent polymer which comprises a hydrophilic polymer crosslinked with a polyvalent metal salt.
Dependencies are inferred from the claim text.