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:
Mar. 15, 2022
Filed:
Jun. 06, 2016
Agc Inc., Chiyoda-ku, JP;
Hiromitsu Kusano, Chiyoda-ku, JP;
Takayuki Kaneko, Chiyoda-ku, JP;
AGC Inc., Chiyoda-ku, JP;
Abstract
To provide a method for producing a fluorinated cation exchange membrane, by which a fluorinated cation exchange membrane having a high effect to suppress attachment of the gas to the surface on the cathode side and having an excellent resistance to dropping of inorganic particles from a gas-releasing layer provided on the cathode side can be obtained. A method for producing a fluorinated cation exchange membranefor electrolysis comprising, on at least the cathode side, a layer (α1)containing a perfluorocarbon polymer (A) having carboxylic acid groups or precursor groups of carboxylic acid groups, and a gas-releasing layer (α2)provided on the cathode side of the layer (α1), which comprises applying to the surface of the layer (α1)a coating liquid containing inorganic particles having an average secondary particle size of from 0.5 to 1.5 μm, a binder and a dispersion medium in a mass ratio of the binder to the total mass of the inorganic particles and the binder of from 0.15 to 0.3, to form the gas-releasing layer (α2)