Title:
METHOD FOR PRODUCING CELLULOSE NANOFIBERS
Document Type and Number:
WIPO Patent Application WO/2011/118746
Kind Code:
A1
Abstract:
Provided is a method for producing a highly concentrated cellulose nanofiber dispersion liquid with outstanding fluidity and transparency, with low energy and high efficiency. Specifically, in the presence of (1) an N-oxyl compound and (2) bromides, iodides, or a mixture thereof, a cellulose starting material is oxidized in water using an oxidizing agent to prepare an oxidized cellulose starting material, and in the presence of cellulase and/or hemicellulase, an ultra-high pressure homogenizer is used to perform defibration/dispersion at a pressure of at least 100 MPa.
Inventors:
KATSUKAWA SHIHO (JP)
MIYAWAKI SHOICHI (JP)
ABE HIROSHI (JP)
KOYANAGI TOMOAKI (JP)
MIYAWAKI SHOICHI (JP)
ABE HIROSHI (JP)
KOYANAGI TOMOAKI (JP)
Application Number:
PCT/JP2011/057283
Publication Date:
September 29, 2011
Filing Date:
March 25, 2011
Export Citation:
Assignee:
JUJO PAPER CO LTD (JP)
KATSUKAWA SHIHO (JP)
MIYAWAKI SHOICHI (JP)
ABE HIROSHI (JP)
KOYANAGI TOMOAKI (JP)
KATSUKAWA SHIHO (JP)
MIYAWAKI SHOICHI (JP)
ABE HIROSHI (JP)
KOYANAGI TOMOAKI (JP)
International Classes:
D01F2/00; C08B15/02; D21H11/18; D21H11/20
Domestic Patent References:
| WO2009122982A1 | 2009-10-08 | |||
| WO2010116826A1 | 2010-10-14 |
Foreign References:
| JP2008169497A | 2008-07-24 | |||
| JP2008001728A | 2008-01-10 |
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
Ono Shinjiro (JP)
Ono Shinjiro (JP)
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Claims: