METHOD FOR PREPARATION OF HYDROXYALKYLALKYLCELLULOSE ETHERS WITH HIGH YIELD

摘要

The present invention relates to a method for preparin hydroxyalkylalkylcellulose with high yield, more particularly to a method for preparing hydroxyalkylalkylcellulose with high yield, with at least 60 % of alkoxy and hydroxyalkoxy substituted, by treating finely ground pulp with an alkali metal hydroxide at room temperature, reacting it with an alkylene oxide and an alkyl halide, and then adding an alkali metal hydroxide and an alkyl halide thereto. The method of the present invention is highly economical and also environment- friendly because waste of the reactants can be greatly reduced.