Title:
METHOD FOR PRODUCING CELLULOSE NANOFIBERS
Document Type and Number:
WIPO Patent Application WO/2011/118748
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 provided is a method wherein a cellulose starting material derived from hardwood is oxidized in water using an oxidizing agent in the presence of (1) an N-oxyl compound and (2) bromides, iodides or a mixture thereof. The starting material is subsequently defibrated and dispersed.
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/JP2011/057287
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:
C08B15/04
Domestic Patent References:
| WO2009107795A1 | 2009-09-03 | |||
| WO2009122982A1 | 2009-10-08 | |||
| WO2009020239A1 | 2009-02-12 | |||
| WO2009084566A1 | 2009-07-09 | |||
| WO2009069641A1 | 2009-06-04 |
Foreign References:
| JP2009298972A | 2009-12-24 | |||
| JP2008001728A | 2008-01-10 | |||
| JPH0725772A | 1995-01-27 | |||
| JPH0748401A | 1995-02-21 | |||
| JP2004250592A | 2004-09-09 | |||
| JP2010235679A | 2010-10-21 |
Other References:
CELLULOSE NO JITEN, 10 November 2000 (2000-11-10), pages 19 - 23, 410 - 412
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
Ono Shinjiro (JP)
Ono Shinjiro (JP)
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Claims:
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