Title:
METHOD FOR ADSORBING FLUOROCARBOXYLIC ACID HAVING ETHER BOND AND METHOD FOR COLLECTING SAME
Document Type and Number:
WIPO Patent Application WO/2010/113720
Kind Code:
A1
Abstract:
Disclosed are an adsorption process whereby a fluorocarboxylic acid having an ether bond can be adsorbed to a high extent by using active carbon without changing the form thereof, and a desorption process whereby the adsorbed material can be desorbed from the active carbon to thereby enable the reuse of the active carbon and the adsorbed material. In the aforesaid processes, a solution containing a fluorocarboxylic acid having an ether bond is contacted with active carbon and thus the active carbon is allowed to adsorb the fluorocarboxylic acid, to thereby give a solution having a small fluorocarboxylic acid content. Then, the active carbon having adsorbed the fluorocarboxylic acid is heated to thereby desorb the fluorocarboxylic acid from the active carbon.
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Inventors:
KURAMITSU MASAKI (JP)
ICHIDA TAKUYA (JP)
ICHIDA TAKUYA (JP)
Application Number:
PCT/JP2010/055073
Publication Date:
October 07, 2010
Filing Date:
March 24, 2010
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
KURAMITSU MASAKI (JP)
ICHIDA TAKUYA (JP)
KURAMITSU MASAKI (JP)
ICHIDA TAKUYA (JP)
International Classes:
C02F1/28; B01J20/20; C07C41/36; C07C43/12
Domestic Patent References:
| WO2009031562A1 | 2009-03-12 |
Foreign References:
| JP2006181416A | 2006-07-13 | |||
| JP2003094052A | 2003-04-02 | |||
| JP2002059160A | 2002-02-26 | |||
| JP2007090206A | 2007-04-12 | |||
| JP2003012316A | 2003-01-15 | |||
| JPH09315809A | 1997-12-09 |
Other References:
See also references of EP 2415716A4
Attorney, Agent or Firm:
TANAKA, Mitsuo et al. (JP)
Mitsuo Tanaka (JP)
Mitsuo Tanaka (JP)
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