| 发明名称 |
ION EXCHANGE MEMBRANE, METHOD FOR PRODUCING SAME, AND ELECTRODIALYZER |
| 摘要 |
Provided is an ion exchange membrane including an ionic vinyl alcohol polymer having a cation exchange group or an anion exchange group. The ion exchange membrane 1 includes a porous support 3 and the ionic vinyl alcohol polymer. The porous support is provided, in a thickness direction from one surface thereof, with an impregnated layer 2 at least a part of which is impregnated with the ionic vinyl alcohol polymer. The ionic vinyl alcohol polymer includes an ionic vinyl alcohol polymer having an ion exchange group selected from a cation exchange group or an anion exchange group. The ion exchange membrane has a zeta potential value (ζ1) at one surface and a zeta potential value (ζ2) at the other surface, which are represented by the formula (1).;(|ζ1|)−|ζ2|)/|ζ1|<0.5 (|ζ1|)≧|ζ2|) (1) |
| 申请公布号 |
US2015291452(A1) |
申请公布日期 |
2015.10.15 |
| 申请号 |
US201514747032 |
申请日期 |
2015.06.23 |
| 申请人 |
KURARAY CO., LTD. ;YAMAGUCHI UNIVERSITY |
发明人 |
JIKIHARA Atsushi;KOBAYASHI Kenichi;NAKASHIMA Takahiro;HIGA Mitsuru |
| 分类号 |
C02F1/469 |
主分类号 |
C02F1/469 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An ion exchange membrane comprising a porous support and an ionic vinyl alcohol polymer, wherein
at least a part of the porous support is impregnated with the ionic vinyl alcohol polymer in a thickness direction from one surface of the porous support to form an impregnated layer; the ionic vinyl alcohol polymer comprises at least an ionic vinyl alcohol polymer having an ion exchange group selected from a cation exchange group or an anion exchange group; and the ion exchange membrane has a zeta potential value (ζ1) at one surface and a zeta potential value (ζ2) at the other surface, which are represented by the formula (1).
(|ζ1|)−|ζ2|)/|ζ1|<0.5 (|ζ1|)≧|ζ2|) (1) |
| 地址 |
Kurashiki-shi JP |
