Title:
METHOD OF RECOVERING ANIONIC FLUORINATED EMULSIFIERS
Document Type and Number:
WIPO Patent Application WO/2011/096448
Kind Code:
A1
Abstract:
Provided is a method of recovering anionic fluorinated emulsifiers, said method being capable of easily and efficiently recovering anionic fluorinated emulsifiers to which a basic ion exchange resin has been adsorbed. The basic ion exchange resin is brought into contact with a mixture of an aqueous inorganic acid solution and a non-aqueous fluorinated medium, or is brought into contact with an aqueous inorganic acid solution and then with a non-aqueous fluorinated medium, whereafter the non-aqueous fluorinated medium phase is recovered and then the acid of the anionic fluorinated emulsifier is recovered from the non-aqueous fluorinated medium phase.
Inventors:
HAGA JUNKO (JP)
MATSUOKA YASUHIKO (JP)
MATSUOKA YASUHIKO (JP)
Application Number:
PCT/JP2011/052175
Publication Date:
August 11, 2011
Filing Date:
February 02, 2011
Export Citation:
Assignee:
ASAHI GLASS CO LTD (JP)
HAGA JUNKO (JP)
MATSUOKA YASUHIKO (JP)
HAGA JUNKO (JP)
MATSUOKA YASUHIKO (JP)
International Classes:
B01J49/00; B01D15/04; B01J41/04; C02F1/42; C09K23/00
Foreign References:
| JP2003285076A | 2003-10-07 | |||
| JPS632656B2 | 1988-01-20 | |||
| JP2001062313A | 2001-03-13 | |||
| JP2002059160A | 2002-02-26 | |||
| JP2003512931A | 2003-04-08 | |||
| JP2003094052A | 2003-04-02 | |||
| JP2003220393A | 2003-08-05 | |||
| JP2010021754A | 2010-01-28 |
Other References:
See also references of EP 2532423A4
Attorney, Agent or Firm:
SENMYO, Kenji et al. (JP)
Spring name Kenji (JP)
Spring name Kenji (JP)
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Claims:
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