Title:
METHOD FOR PRODUCING CELLULOSE FINE FIBER
Document Type and Number:
WIPO Patent Application WO/2017/208600
Kind Code:
A1
Abstract:
Provided is a method for producing a cellulose fine fiber that has a nano size and high crystallinity and rarely undergoes the damage of a fiber shape, by impregnating cellulose with a formic acid-containing fiberizing solution and then fiberizing the cellulose, without requiring vigorous mechanical fragmentation of the cellulose. Also provided is a method for producing a surface-modified cellulose fine fiber in which the cellulose is modified.
The method for producing a cellulose fine fiber according to the present invention involves impregnating cellulose with a fiberizing solution, i.e., formic acid, a formic acid-rich aqueous solution or a solution of formic acid or a formic acid-rich aqueous solution in an aprotic solvent having a number of donors of 26 or more and then fiberizing the cellulose. The method for producing a surface-modified cellulose fine fiber according to the present invention is characterized in that the fiberizing solution further contains a modification reaction agent and the method involves impregnating cellulose with the fiberizing solution and then modifying the microfibril surface of the cellulose while fiberizing the cellulose.
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Inventors:
LIN LIANZHEN (JP)
MARUTA AYAKO (JP)
HORI MASANORI (JP)
MARUTA AYAKO (JP)
HORI MASANORI (JP)
Application Number:
PCT/JP2017/012627
Publication Date:
December 07, 2017
Filing Date:
March 28, 2017
Export Citation:
Assignee:
KRI INC (JP)
International Classes:
D21H11/18; C08B15/08
Foreign References:
| JP2014520182A | 2014-08-21 | |||
| JPH10511147A | 1998-10-27 | |||
| JPS5551890A | 1980-04-15 | |||
| JP2012012713A | 2012-01-19 | |||
| JP2010235687A | 2010-10-21 | |||
| JP2001342353A | 2001-12-14 | |||
| JP2011208286A | 2011-10-20 | |||
| US20140200335A1 | 2014-07-17 |
Other References:
See also references of EP 3467201A4
Attorney, Agent or Firm:
MOMII Takafumi (JP)
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