Title:
METHOD FOR RECOVERY/REUSE OF N-OXYL COMPOUND
Document Type and Number:
WIPO Patent Application WO/2010/116794
Kind Code:
A1
Abstract:
In the oxidation of a cellulose raw material with an oxidizing agent in the presence of an N-oxyl compound and a bromide and/or an iodide, a liquid waste produced in the oxidation is desalted by means of electrophoresis until the inorganic salt concentration is reduced to less than 0.4%, thereby recovering the N-oxyl compound contained in the liquid waste in a concentrated form. The recovered N-oxyl compound can be reused in the oxidation of the cellulose raw material. It is preferred that the liquid waste be reduced or treated with an ion exchange resin prior to the electrophoresis.
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Inventors:
MIYAWAKI SHOICHI (JP)
KATSUKAWA SHIHO (JP)
ABE HIROSHI (JP)
IIJIMA YUKO (JP)
ISOGAI AKIRA (JP)
KATSUKAWA SHIHO (JP)
ABE HIROSHI (JP)
IIJIMA YUKO (JP)
ISOGAI AKIRA (JP)
Application Number:
PCT/JP2010/052277
Publication Date:
October 14, 2010
Filing Date:
February 16, 2010
Export Citation:
Assignee:
JUJO PAPER CO LTD (JP)
MIYAWAKI SHOICHI (JP)
KATSUKAWA SHIHO (JP)
ABE HIROSHI (JP)
IIJIMA YUKO (JP)
ISOGAI AKIRA (JP)
MIYAWAKI SHOICHI (JP)
KATSUKAWA SHIHO (JP)
ABE HIROSHI (JP)
IIJIMA YUKO (JP)
ISOGAI AKIRA (JP)
International Classes:
C07D211/94; D01F2/00; B01J31/02; B01J38/00; C08B15/02
Foreign References:
| JPH11147043A | 1999-06-02 | |||
| JP2009242590A | 2009-10-22 |
Other References:
GHEORGHE, A. ET AL.: "Combination of Perfluoroalkyl and Triazole Moieties: A New Recovery Strategy for TEMPO", ORGANIC LETTERS, vol. 10, no. 19, 2008, pages 4171 - 4174, XP055098371
SAITO, T. ET AL., CELLULOSE COMMUN., vol. 14, no. 2, 2007, pages 62
See also references of EP 2415761A4
SAITO, T. ET AL., CELLULOSE COMMUN., vol. 14, no. 2, 2007, pages 62
See also references of EP 2415761A4
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
Ono Shinjiro (JP)
Ono Shinjiro (JP)
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