Patent ID: 9580516
Date: 2017-02-28
CPC Classifications: C08B

Claim:
1. A method for producing cellulose ether, comprising at least the steps of: bringing two or more types of pulps having different alkali metal hydroxide solution absorption rates into contact with a 23 to 60% by weight alkali metal hydroxide solution to obtain a contact product; and draining the contact product to obtain alkali cellulose; and reacting the alkali cellulose with an etherifying agent; wherein the alkali metal hydroxide solution absorption rates of the two or more types of pulps are measured before the step of bringing two or more types of pulps into contact with the alkali metal hydroxide solution, and the two or more types of pulps are combined so that the highest absorption rate is not more than 4.0 times as fast as the lowest absorption rate.