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:
Jul. 20, 2021
Filed:
Oct. 10, 2018
Agc Inc., Chiyoda-ku, JP;
Yasushi Yamaki, Chiyoda-ku, JP;
Takayuki Kaneko, Chiyoda-ku, JP;
Hiromitsu Kusano, Chiyoda-ku, JP;
Takuo Nishio, Chiyoda-ku, JP;
AGC Inc., Chiyoda-ku, JP;
Abstract
To provide an ion exchange membrane for alkali chloride electrolysis which is a membrane having a high water permeability and being capable of maintaining a low electrolysis voltage while suppressing the amount of water supplied to a cathode chamber to be minimum, and which is capable of forming an aqueous alkali hydroxide solution having a high caustic alkali quality. The ion exchange membrane for alkali chloride electrolysis comprises a layermade of a fluorinated polymer having carboxylic acid functional groups, and a layerA and a layerB made of a fluorinated polymer having sulfonic acid functional groups, wherein a reinforcing materialcontaining reinforcing threadsis disposed between the layerA and the layerB, the thickness when dried, of the layeris from 9 to 28 μm, the layerB includes a layer having an ion exchange capacity of from 1.3 to 2.5 meq/g, the thickness when dried, of the layerB is from 6 to 100 μm, the layerA includes a layer having an ion exchange capacity of from 0.9 to 1.25 meq/g, and the thickness when dried, of the layerA is from 40 to 110 μm.