Title:
セルロースエーテルの製造方法
Document Type and Number:
Japanese Patent JP5571599
Kind Code:
B2
Abstract:
Provided is a method for producing cellulose ether whose aqueous solution is transparent and contains a smaller amount of water-insoluble portion. The method comprises at least the steps of: providing at least two alkali cellulose materials having different compositions, each of the materials having been prepared by bringing a pulp into contact with a solution of alkali metal hydroxide and draining; and mixing the at least two alkali cellulose materials having different compositions, wherein each weight ratio of the alkali metal hydroxide in each of the alkali cellulose materials having different compositions to a solid component in the pulp (alkali metal hydroxide/solid component in pulp) is equal to 0.4 to 2.5 times of a weight ratio of alkali metal hydroxide in the alkali cellulose obtained in the step of mixing to solid components in a sum of pulps used for preparation of the alkali cellulose materials.
More Like This:
Inventors:
Mitsuo Narita
Application Number:
JP2011034469A
Publication Date:
August 13, 2014
Filing Date:
February 21, 2011
Export Citation:
Assignee:
Shin-Etsu Chemical Co., Ltd.
International Classes:
C08B11/193; C08B1/08; C08B11/02; C08B11/08
Attorney, Agent or Firm:
Okuyama In addition, it is 1.
Owner field Koichi
Tetsuo Matsushima
Hidefumi Kawamura
Naomi Yoshida
Ayako Nakamura
Fukagawa Hidesato
Morimoto Satoshi 2
Kyoko Tsunoda
Mikinori Hirose
Owner field Koichi
Tetsuo Matsushima
Hidefumi Kawamura
Naomi Yoshida
Ayako Nakamura
Fukagawa Hidesato
Morimoto Satoshi 2
Kyoko Tsunoda
Mikinori Hirose