| 摘要 |
PURPOSE:To produce carboxymethyl cellulose, having a high bulk density and excellent in powder fluidity without requiring regulation of the moisture content, etc., by kneading a reactional product etherified in a shearing apparatus according to a solvent method, then pulverizing the kneaded product and classifying the pulverized material. CONSTITUTION:A reactional product after completing the etherification according to a solvent method is kneaded in an apparatus to which a shearing force is applied, then dried, pulverized and classified to produce carboxymethyl cellulose having 600-950g/L bulk density. The water content in the amount of the residual solvent in the reactional product after the kneading is 80-99wt.%. The amount of the residual solvent before the kneading is 30-70wt.%. The bulk density is preferably 650-850g/L. |
