Title:
N-オキシル化合物の回収・再利用方法
Document Type and Number:
Japanese Patent JP4669584
Kind Code:
B2
Abstract:
An effluent produced in oxidation of a cellulosic material with an oxidizing agent in the presence of an N-oxyl compound and a bromide and/or iodide is deionized by electrodialysis to an inorganic salt concentration of less than 0.4%, whereby the N-oxyl compound in the effluent is concentrated and recovered. The N-oxyl compound thus recovered can be reused in oxidation of a cellulosic material. Preferably, the effluent is subjected to reduction treatment and ion exchange resin treatment prior to the electrodialysis.
More Like This:
Inventors:
Shoichi Miyawaki
Katsukawa Shiho
Abe Hiroshi
Iijima Yuko
Akira Isogai
Katsukawa Shiho
Abe Hiroshi
Iijima Yuko
Akira Isogai
Application Number:
JP2010533771A
Publication Date:
April 13, 2011
Filing Date:
February 16, 2010
Export Citation:
Assignee:
NIPPON PAPER INDUSTRIES CO.,LTD.
International Classes:
C07D211/94; B01J19/00; C08B15/00; D01F2/00; D21C9/10; D21H11/16; D21H15/02
Domestic Patent References:
| JP2008308802A | 2008-12-25 |
Attorney, Agent or Firm:
Shinjiro Ono
Kazuo Shamoto
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Minako Matsuyama
Mitsutoshi Nakamura
Yuki Ogasawara
Kazuo Shamoto
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Minako Matsuyama
Mitsutoshi Nakamura
Yuki Ogasawara