Title:
ION EXCHANGE MEMBRANE
Document Type and Number:
WIPO Patent Application WO/2016/186083
Kind Code:
A1
Abstract:
This ion exchange membrane has: a layer A that includes a fluorine-containing polymer that has a sulfonic acid group; and a layer B that includes a fluorine-containing polymer that has a carboxylic acid group. For the electrolytic conditions below, the ratio [(post-electrolysis ion cluster diameter of layer B)/(pre-electrolysis ion cluster diameter of layer B)] of the post-electrolysis ion cluster diameter of the layer B to the pre-electrolysis ion cluster diameter of the layer B is 0.83-0.95. (Electrolytic conditions) Electrolysis is conducted for 7 days at a temperature of 85℃ and under a current density of 6 kA/m2 in a zero gap electrolytic cell in which the ion exchange membrane is arranged between an anode chamber to which a 3.5 normal (3.5 N) sodium chloride aqueous solution has been supplied and a cathode chamber to which a 10.8 normal (10.8 N) sodium hydroxide aqueous solution has been supplied.
Inventors:
NAKAJIMA ATSUSHI (JP)
SAKAMOTO NAOKI (JP)
MORIKAWA TAKUYA (JP)
SAKAMOTO NAOKI (JP)
MORIKAWA TAKUYA (JP)
Application Number:
PCT/JP2016/064526
Publication Date:
November 24, 2016
Filing Date:
May 16, 2016
Export Citation:
Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
C25B13/08; B01J39/04; B01J39/20; B01J47/12; B32B27/30; C08F16/30; C25B9/19
Domestic Patent References:
| WO2014203886A1 | 2014-12-24 |
Foreign References:
| JP2014058707A | 2014-04-03 |
Other References:
See also references of EP 3299495A4
Attorney, Agent or Firm:
INABA, Yoshiyuki et al. (JP)
稲葉 良幸 (JP)
稲葉 良幸 (JP)
Download PDF: