| http://www.w3.org/ns/prov#value | - The present invention provides a quaternary ammonium salt of carboxymethylcellulose having the formula: ##STR2## wherein R is a hydrogen atom or a quaternary ammonio carboxymethyl group, and n is an integer from 10 to 1000, provided that a degree of substitution by carboxymethyl group per anhydrous glucose unit in said carboxymethylcellulose is 1.5 or more and the quaternary ammonio carboxymethyl
|
