Title:
アルカリセルロース及びセルロース誘導体の改良された製造方法
Document Type and Number:
Japanese Patent JP5706344
Kind Code:
B2
Abstract:
The present invention relates to a process for the production of alkali cellulose for the production of alkali cellulose and, optionally, cellulose ethers from cellulose in the presence of alkali and, if applicable, with alkylating and/or hydroxyalkylating agent(s) comprising the reaction of a cellulose with an alkali metal hydroxide, wherein the alkali metal hydroxide is mixed with cellulose in a mixing apparatus, the mixing apparatus (1) having an upper region (20, 102a, 202a) with a first cross-section and a lower region (21, 102b, 202b) with a second cross-section, the second cross-section being the same as or smaller than the first cross-section and comprising at least one non-horizontally oriented mixing device (23, 27, 121, 221, 224).
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Inventors:
Matthias Sprague
Betina Halezer
Betina Halezer
Application Number:
JP2011552953A
Publication Date:
April 22, 2015
Filing Date:
January 08, 2010
Export Citation:
Assignee:
Dow Global Technologies LLC
International Classes:
C08B1/08; C08B1/10; C08B11/02
Domestic Patent References:
| JP56002302A | ||||
| JP2006348177A | ||||
| JP2007197678A | ||||
| JP63199701A |
Foreign References:
| US4260739 |
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Naori Kota
Nagasaka Tomoyasu
Satoshi Deno
Atsushi Ebiya
Takashi Ishida
Tetsuji Koga
Naori Kota
Nagasaka Tomoyasu
Satoshi Deno
Atsushi Ebiya