Title:
METHOD OF SEPARATING ANIONIC FLUOROCHEMICAL SURFACTANT
Document Type and Number:
WIPO Patent Application WO/2002/014223
Kind Code:
A1
Abstract:
A method of separating an anionic fluorochemical surfactant from an aqueous solution containing the anionic fluorochemical surfactant, which comprises (i) bringing the aqueous solution into contact with a basic anion-exchange resin to adsorb the anionic fluorochemical surfactant onto the basic anion-exchange resin and (ii) subsequently eluting the anionic fluorochemical surfactant from the basic anion-exchange resin with an eluent which is an alkali solution comprising water and an organic solvent.
Inventors:
KONDO MASAHIRO (JP)
ICHIDA TAKUYA (JP)
ICHIDA TAKUYA (JP)
Application Number:
PCT/JP2001/006840
Publication Date:
February 21, 2002
Filing Date:
August 09, 2001
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
KONDO MASAHIRO (JP)
ICHIDA TAKUYA (JP)
KONDO MASAHIRO (JP)
ICHIDA TAKUYA (JP)
International Classes:
B01J20/26; B01J20/34; B01J41/04; B01J49/00; C02F1/42; B01D15/04; C08F6/14; C09K23/00; (IPC1-7): C02F1/42; B01J41/04; B01J49/00; C08J3/00; C08F6/14
Foreign References:
| EP1069078A2 | 2001-01-17 | |||
| US4282162A | 1981-08-04 | |||
| US3882153A | 1975-05-06 | |||
| US4369266A | 1983-01-18 |
Other References:
See also references of EP 1323677A4
Attorney, Agent or Firm:
Aoyama, Tamotsu (3-7 Shiromi 1-chom, Chuo-ku Osaka-shi Osaka, JP)
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