Title:
セルロース微細繊維の製造方法
Document Type and Number:
Japanese Patent JP6674020
Kind Code:
B2
Abstract:
Provided is a method of producing cellulose fine fibers that are nanosized, that have a high crystallinity degree, and that are less vulnerable to fiber shape damage, the method including impregnating cellulose with a fibrillation solution containing formic acid to fibrillate the cellulose without vigorous mechanical crushing. Also provided is a method of producing surface-modified cellulose fine fibers including modifying cellulose. The method of producing cellulose fine fibers of the present invention includes impregnating the cellulose with formic acid, a high-concentration formic acid aqueous solution, or a solution containing, in an aprotic solvent having a donor number of 26 or more, formic acid or a high-concentration formic acid aqueous solution serving as a fibrillation solution to fibrillate the cellulose. In addition, the method of producing surface-modified cellulose fine fibers of the present invention has a feature in that: the fibrillation solution further contains a modification reaction agent; and the method includes impregnating the cellulose with the fibrillation solution to modify the surfaces of cellulose fine fibers while fibrillating the cellulose.
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Inventors:
Chung-Yun Hse
Ayako Maruta
Masanori Hori
Ayako Maruta
Masanori Hori
Application Number:
JP2018520680A
Publication Date:
April 01, 2020
Filing Date:
March 28, 2017
Export Citation:
Assignee:
Futamura Chemical Co., Ltd.
International Classes:
D21H11/18; C08B15/08
Domestic Patent References:
| JP2014520182A | ||||
| JP10511147A | ||||
| JP55051890A | ||||
| JP201679202A |
Foreign References:
| CN104448007A |
Attorney, Agent or Firm:
Katsuto Momii