Readily dispersible anionic, water-soluble cellulose derivatives and a method for their preparation
AssigneeHercules Incorporated
InventorThomas G. Majewicz
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Abstract
Anionic, water-soluble cellulose ethers which are treated with a mixture of glyoxal and a sodium borate, preferably borax, readily disperse in aqueous solutions without clumping or agglomerating. These treated compounds can be formed by contacting an organic slurry of an anionic, water-soluble cellulose ether with an aqueous solution of glyoxal and a sodium borate, recovering the product and then drying it.
Claims11
A method for making a dispersible, anionic, water-soluble cellulose ether comprising:
- (a) contacting a particulate anionic water-soluble cellulose ether with an aqueous medium prepared from water, glyoxal, and a sodium borate to form a product;
- (b) recovering the resulting product;
- and
- (c) drying the recovered product.
A particulate anionic water-soluble cellulose ether which has been treated with an aqueous medium prepared from water and the reaction product of glyoxal and a sodium borate.
Dependencies are inferred from the claim text.