Ion exchange process using activated regenerated cellulose
AssigneeViscose Development Co., Ltd.
InventorsDavid T. Jones, Kenneth R. Rees, George E. Jowett
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Abstract
An ion exchange process is characterized by the use of an ion exchange cellulose made by reacting unregenerated cellulose with a monomeric substance having at least one ionizable chemical group which imparts ion exchange properties to the cellulose reaction product, and thereafter regenerating the activated cellulose reaction product to yield an activated regenerated cellulose having ion exchange properties.
Claims13
In a process for removing an organic polyelectrolyte from an aqueous solution of the polyelectrolyte, which comprises binding the polyelectrolyte by ion-exchange means to a cellulosic ion-exchange material, the improvement which comprises;
- employing as the ion exchange cellulose material, one made by reacting unregenerated cellulose with a monomeric substance having at least one ionisable chemical group which imparts ion exchange properties to the cellulose reaction product, and thereafter regenerating the activated cellulose reaction product to yield an activated regenerated cellulose having ion exchange properties.
An ion-exchange cellulose material, which comprises;
- the activated cellulose obtained on regeneration of the product obtained upon etherifying unregenerated cellulose with a monomeric substance having at least one ionisable chemical group which imparts ion exchange properties, said substance being selected from the group consisting of monochloroacetic acid and N,N-diethyl-2-chloroethylamine hydrochloride.
Dependencies are inferred from the claim text.