Title:
セルロース微細繊維およびその製造方法
Document Type and Number:
Japanese Patent JP6905039
Kind Code:
B2
Abstract:
Provided is a method of producing fine cellulose 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 to fibrillate the cellulose without mechanical crushing, and modifying the cellulose. The method of producing cellulose microfibrils of the present invention includes impregnating cellulose with a fibrillation solution containing a carboxylic acid vinyl ester or an aldehyde and an aprotic solvent having a donor number of 26 or more to fibrillate the cellulose. The aldehyde is at least one kind of aldehyde selected from the group consisting of an aldehyde represented by the following formula (1), paraformaldehyde, cinnamaldehyde, perillaldehyde, vanillin, and glyoxal:
R 1 -CHO(1)
where R 1 represents a hydrogen atom, an alkyl group having 1 to 16 carbon atoms, an alkenyl group, a cycloalkyl group, or an aryl group.
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Inventors:
Chung-Yun Hse
Ayako Maruta
Masanori Hori
Ayako Maruta
Masanori Hori
Application Number:
JP2019223329A
Publication Date:
July 21, 2021
Filing Date:
December 11, 2019
Export Citation:
Assignee:
Futamura Chemical Co., Ltd.
ASAHI KASEI KABUSHIKI KAISHA
ASAHI KASEI KABUSHIKI KAISHA
International Classes:
D01F2/00; C08B15/08; D21B1/12; D21H11/18
Domestic Patent References:
| JP2013043984A | ||||
| JP2010104768A | ||||
| JP2012188654A |
Foreign References:
| WO2016010016A1 |
Attorney, Agent or Firm:
Katsuto Momii