Title:
A recovery method of an anionic fluorine-containing emulsifier
Document Type and Number:
Japanese Patent JP5983615
Kind Code:
B2
Abstract:
To provide a method for recovering an anionic fluorinated emulsifier, whereby an anionic fluorinated emulsifier adsorbed on a basic ion exchange resin can be simply and efficiently recovered. A mixed liquid of an aqueous inorganic acid solution, a fluorinated medium and a non-fluorinated medium, is contacted to a basic ion exchange resin having an anionic fluorinated emulsifier adsorbed thereon, to recover a liquid phase containing the fluorinated medium, or an aqueous inorganic acid solution is contacted to a basic ion exchange resin having an anionic fluorinated emulsifier adsorbed thereon, then a mixed liquid of a fluorinated medium and a non-fluorinated medium is contacted thereto, and thereafter the basic ion exchange resin and a liquid phase are separated to recover the liquid phase, whereupon from each liquid phase, an acid of the anionic fluorinated emulsifier is recovered.
Inventors:
Shigeru Aida
Mizuna Toyota
Hamasaki Kazuo
Mizuna Toyota
Hamasaki Kazuo
Application Number:
JP2013533639A
Publication Date:
September 06, 2016
Filing Date:
September 06, 2012
Export Citation:
Assignee:
Asahi Glass Co., Ltd.
International Classes:
B01J49/00; B01J41/04; C07C51/47; C07C59/135
Domestic Patent References:
| JP55104651A | ||||
| JP2002059160A | ||||
| JP2003285076A |
Foreign References:
| WO2011096448A1 |
Attorney, Agent or Firm:
Shigeru Matsui
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