Title:
セルロースエーテルの製造方法
Document Type and Number:
Japanese Patent JP5671367
Kind Code:
B2
Abstract:
A degree of polymerization of cellulose ether is accurately controlled, and quality and a manufacturing process of the cellulose ether are stabilized. There is provided a method for producing depolymerized alkali cellulose having a degree of polymerization controlled, comprising at least a step of depolymerizing, in the presence of an oxygen-containing gas flow, alkali cellulose obtained by bringing a pulp into contact with an alkali solution, while measuring feeding and discharging amounts of oxygen in the oxygen-containing gas flow. There is also provided a method for producing cellulose ether, comprising at least a step of adding an etherifying agent to the depolymerized alkali cellulose having a degree of polymerization controlled.
Inventors:
成田 光男
Application Number:
JP2011034471A
Publication Date:
February 18, 2015
Filing Date:
February 21, 2011
Export Citation:
Assignee:
信越化学工業株式会社
International Classes:
C08B11/00; C08J3/00
Attorney, Agent or Firm:
Okuyama In addition, it is 1.
Owner field Koichi
Tetsuo Matsushima
Hidefumi Kawamura
Owner field Koichi
Tetsuo Matsushima
Hidefumi Kawamura