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US 2006/0142480 A1Published application
Method of making carboxyalkyl cellulose polymer network
OwnerMengkui Luo, Amar Neogiinventors
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Abstract
Methods for making a carboxyalkyl cellulose polymer network having superabsorbent properties.
Claims20
A method for making a crosslinked carboxyalkyl cellulose, comprising reacting a carboxyalkyl cellulose obtained from pulp having a kappa value of from about 1 to about 65 with a crosslinking agent in an amount effective to render the carboxyalkyl cellulose insoluble in water.
A method for making a crosslinked carboxyalkyl cellulose, comprising
- (a) combining a carboxyalkyl cellulose obtained from pulp having a kappa value of from about 1 to about 65 and a crosslinking agent in an amount effective to render the carboxyalkyl cellulose insoluble in water in an aqueous solution to provide a reaction mixture;
- (b) precipitating the reaction mixture by addition of a water-miscible solvent to provide a precipitated mixture;
- (c) collecting the precipitated mixture;
- and
- (d) crosslinking the precipitated mixture to provide the crosslinked carboxyalkyl cellulose.
2 more elements
A method for making a crosslinked carboxyalkyl cellulose, comprising:
- (a) treating a carboxyalkyl cellulose obtained from pulp having a kappa value of from about 1 to about 65 with a crosslinking agent in an amount effective to render the carboxyalkyl cellulose insoluble in water to provide a reaction mixture;
- and
- (b) crosslinking the reaction mixture to provide the crosslinked carboxyalkyl cellulose.
Dependencies are inferred from the claim text.