RECOVERY METHOD FOR ANIONIC FLUORINE-CONTAINING EMULSIFIER

Title:

RECOVERY METHOD FOR ANIONIC FLUORINE-CONTAINING EMULSIFIER

Document Type and Number:

WIPO Patent Application WO/2015/152173

Kind Code:

A1

Abstract:

Provided is a method that recovers high yields of an acid of an anionic fluorine-containing emulsifier from a basic ion exchange resin to which is physisorbed a nonionic surfactant and to which is adsorbed the anionic fluorine-containing emulsifier. A method wherein an acid of an anionic fluorine-containing emulsifier is eluted and recovered from a basic ion exchange resin by executing a step (1) wherein a water-soluble organic solvent is brought into contact with the basic ion exchange resin, which has physisorbed thereto a nonionic surfactant and has adsorbed thereto the anionic fluorine-containing emulsifier, and by executing a step (2) wherein the acid of the anionic fluorine-containing emulsifier is recovered from the basic ion exchange resin, from which the nonionic surfactant is eluted in step (1).

Inventors:

TAKAZAWA MASAHIRO (JP)
AIDA SHIGERU (JP)

Application Number:

PCT/JP2015/059986

Publication Date:

October 08, 2015

Filing Date:

March 30, 2015

Export Citation:

Click for automatic bibliography generation Help

Assignee:

ASAHI GLASS CO LTD (JP)

International Classes:

B01J41/04; C09K23/42; B01J49/00; C07C51/347; C07C51/487; C07C59/135

Domestic Patent References:

WO2014136692A1

2014-09-12

Foreign References:

JP2002516885A	2002-06-11
JP2003094052A	2003-04-02
JP2007098240A	2007-04-19

Other References: