Title:
FINE CELLULOSE FIBER AND PRODUCTION METHOD FOR SAME
Document Type and Number:
WIPO Patent Application WO/2017/159823
Kind Code:
A1
Abstract:
Provided is a method for producing fine cellulose fibers which are nano-sized, which have a high crystallinity degree, and which are less vulnerable to fiber shape damage, by impregnating cellulose with a defibrillation solution to defibrate the cellulose without mechanical pulverization, and modifying the cellulose. The fine cellulose fiber production method according to the present invention comprises a step for impregnating cellulose with a fibrillation solution that contains a carboxylic acid vinyl ester or an aldehyde and an aprotic solvent having a donor number of 26 or higher to defibrate the cellulose. This aldehyde is at least one selected from the group consisting of aldehydes represented by formula (1), paraformaldehyde, cinnamaldehyde, perillaldehyde, vanillin, and glyoxal. R1―CHO (1) (Wherein, R1 represents a hydrogen atom, an alkyl group having 1-16 carbon atoms, an alkenyl group, a cycloalkyl group or an aryl group.)
Inventors:
LIN LIANZHEN (JP)
MARUTA AYAKO (JP)
HORI MASANORI (JP)
MARUTA AYAKO (JP)
HORI MASANORI (JP)
Application Number:
PCT/JP2017/010789
Publication Date:
September 21, 2017
Filing Date:
March 16, 2017
Export Citation:
Assignee:
KRI INC (JP)
International Classes:
D21H11/18; C08B1/02; C08B3/02; C08B3/16; C08B3/20; D01F2/00
Domestic Patent References:
| WO2016010016A1 | 2016-01-21 |
Foreign References:
| JP2013043984A | 2013-03-04 | |||
| JP2010104768A | 2010-05-13 | |||
| JP2008274247A | 2008-11-13 | |||
| JP2007070797A | 2007-03-22 |
Other References:
See also references of EP 3431655A4
Attorney, Agent or Firm:
MOMII, Takafumi (JP)
Download PDF: