Title:
含フッ素界面活性剤の回収方法
Document Type and Number:
Japanese Patent JP5055652
Kind Code:
B2
Abstract:
Upon recovering a fluorochemical surfactant from a fluorochemical-containing aqueous solution, there is provided a method for recovering the fluorochemical surfactant from the aqueous solution containing the surfactant. In the method, the fluorochemical surfactant is recovered by subjecting the aqueous solution containing the fluorochemical surfactant to a filtration treatment step with a reverse osmosis membrane so as to obtain from the aqueous solution, a concentrated aqueous solution in which the concentration of the fluorochemical surfactant is increased.
Inventors:
Takuya Ichida
Masahiro Kondo
Masahiro Kondo
Application Number:
JP2000244369A
Publication Date:
October 24, 2012
Filing Date:
August 11, 2000
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
B01D61/02; B01D61/04; B01D69/12; B01D71/56; B01D71/64; B01D71/68; C07C51/42; C07C51/64; C07C53/21; C08F2/26; C08F6/00; C08F6/06; C08F6/22; C08F14/18; C08F16/24
Domestic Patent References:
| JP4033902A | ||||
| JP51037973A |
Foreign References:
| US2559752 |
Other References:
Khim Tekhnol Vody,1987年 3月,Vol.9 No.2 ,Page.140-142、翻訳文
Attorney, Agent or Firm:
Aoyama Aoi
Yasuo Shibata
Samejima Mutsumi
Yasuo Shibata
Samejima Mutsumi