Antimicrobial water-absorbent cross-linked polymeric polycarboxylic acid and related methods
AssigneeEcovia Renewables Inc.
InventorChao PENG
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Abstract
Disclosed are methods of preparing an antimicrobial cross-linked polymeric poly carboxylic acid with improved in-use stability and service life, by making a cross-linked polymeric polycarboxylic acid containing ammonium groups. Also disclosed are the antimicrobial cross-linked polymeric polycarboxylic acids made by the methods, antimicrobial water-absorbent cross-linked polymeric poly carboxylic acids made by the methods, and water-absorbent materials comprising the antimicrobial cross-linked polymeric poly carboxylic acids.
Claims20
A method of preparing an antimicrobial cross-linked polymeric polycarboxylic acid comprising reacting the polymeric polycarboxylic acid with a cross-linking agent and a glycidyl ammonium compound.
A cross-linked polymeric polycarboxylic acid which comprises:
- (a) hydrophilic polymer chains with carboxyl groups
- (b) ammonium groups
- (c) cross-links between the polymer chains.
Dependencies are inferred from the claim text.