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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)
Application Number:
PCT/JP2011/057283
Publication Date:
September 29, 2011
Filing Date:
March 25, 2011
Export Citation:
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Assignee:
JUJO PAPER CO LTD (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:
WO2009122982A12009-10-08
WO2010116826A12010-10-14
Foreign References:
JP2008169497A2008-07-24
JP2008001728A2008-01-10
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
Ono Shinjiro (JP)
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Claims: