The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 13, 2018
Filed:
Jun. 23, 2015
Kuraray Co., Ltd., Kurashiki-shi, JP;
Yamaguchi University, Yamaguchi-shi, JP;
Atsushi Jikihara, Kurashiki, JP;
Kenichi Kobayashi, Kurashiki, JP;
Takahiro Nakashima, Saijo, JP;
Mitsuru Higa, Ube, JP;
KURARAY CO., LTD., Kurashiki-shi, JP;
YAMAGUCHI UNIVERSITY, Yamaguchi-shi, JP;
Abstract
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 membraneincludes a porous supportand the ionic vinyl alcohol polymer. The porous support is provided, in a thickness direction from one surface thereof, with an impregnated layerat 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)