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 (Limited 12-1, Yurakucho 1-chome, Chiyoda-k, Tokyo 05, 〒1008405, JP)
芳賀 順子 (〒05 東京都千代田区有楽町一丁目１２番１号 旭硝子株式会社内 Tokyo, 〒1008405, JP)
芳賀 順子 (〒05 東京都千代田区有楽町一丁目１２番１号 旭硝子株式会社内 Tokyo, 〒1008405, JP)
Application Number:
JP2011/052175
Publication Date:
August 11, 2011
Filing Date:
February 02, 2011
Export Citation:
Assignee:
ASAHI GLASS COMPANY, LIMITED (12-1, Yurakucho 1-chome Chiyoda-k, Tokyo 05, 〒1008405, JP)
旭硝子株式会社 (〒05 東京都千代田区有楽町一丁目１２番１号 Tokyo, 〒1008405, JP)
HAGA, Junko (Limited 12-1, Yurakucho 1-chome, Chiyoda-k, Tokyo 05, 〒1008405, JP)
旭硝子株式会社 (〒05 東京都千代田区有楽町一丁目１２番１号 Tokyo, 〒1008405, JP)
HAGA, Junko (Limited 12-1, Yurakucho 1-chome, Chiyoda-k, Tokyo 05, 〒1008405, JP)
International Classes:
B01J49/00; B01D15/04; B01J41/04; C02F1/42
Attorney, Agent or Firm:
SENMYO, Kenji et al. (4th Floor, SIA Kanda Square 17, Kanda-konyacho, Chiyoda-k, Tokyo 35, 〒1010035, JP)
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