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US 6,500,947 B1Granted
Superabsorbent polymer
AssigneeWeyerhaeuser Company
InventorsHugh West, John A. Westland
Life of this patent
Estimating the term…
Abstract
The present invention provides a polymer derived from a cellulosic, lignocellulosic, or polysaccharide material having superabsorbent properties. Methods for making the polymer and personal care absorbent products that incorporated the polymer are also provided.
Claims7
A cellulose sulfate superabsorbent polymer having a Free Liquid Value less than about 40 percent and an absorptive capacity of at least about 20 g/g.
A regenerated, cellulose sulfate superabsorbent polymer having a Free Liquid Value less than about 40 percent.
Dependencies are inferred from the claim text.