JPS57172928A - Cation exchange membrane and its use in electrolysis - Google Patents

Cation exchange membrane and its use in electrolysis

Info

Publication number
JPS57172928A
JPS57172928A JP57027079A JP2707982A JPS57172928A JP S57172928 A JPS57172928 A JP S57172928A JP 57027079 A JP57027079 A JP 57027079A JP 2707982 A JP2707982 A JP 2707982A JP S57172928 A JPS57172928 A JP S57172928A
Authority
JP
Japan
Prior art keywords
electrolysis
membrane
side chain
cathode chamber
acid group
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP57027079A
Other languages
Japanese (ja)
Other versions
JPS59526B2 (en
Inventor
Maomi Seko
Yasumichi Yamakoshi
Koji Miyauchi
Mitsunobu Fukumoto
Kyoji Kimoto
Itaru Watanabe
Shunko Hane
Sakae Tsushima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Kasei Corp
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
Asahi Kasei Kogyo KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Asahi Chemical Industry Co Ltd, Asahi Kasei Kogyo KK filed Critical Asahi Chemical Industry Co Ltd
Priority to JP57027079A priority Critical patent/JPS59526B2/en
Publication of JPS57172928A publication Critical patent/JPS57172928A/en
Publication of JPS59526B2 publication Critical patent/JPS59526B2/en
Expired legal-status Critical Current

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Abstract

PURPOSE: To increase current efficiency in the electrolysis of an aqueous solution to produce high concn. caustic soda, etc., by using a diaphragm consisting of an exchange membrane made from perfluorocarbon polymer with a side chain of a specified structure.
CONSTITUTION: The titled catin exchange membrane contains a perfluorocarbon polymer with a side chain of the fomula (wherein M is H, metal or NH4 group; Y is F or trifluoromethyl group; n is 0W30). The side chain enables the membrane to check diffusion of OH- from a cathode chamber in the electrolysis of salt water and this makes it possible to perform electrolysis at a high current efficiency even when NaOH is produced in the cathode chamber in high concn. This is because a carboxylic acid group present in the membrane esp. in the surface layer facing the cathode chamber, is less hydrophilic than a sulfonic acid group and prevents diffusion of OH-. The high density of the carboxylic acid group reduces electric resistance of the membrane leading to operation at a high current density and efficiency.
COPYRIGHT: (C)1982,JPO&Japio
JP57027079A 1982-02-22 1982-02-22 Cation exchange membrane Expired JPS59526B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57027079A JPS59526B2 (en) 1982-02-22 1982-02-22 Cation exchange membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57027079A JPS59526B2 (en) 1982-02-22 1982-02-22 Cation exchange membrane

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP50084111A Division JPS5224176A (en) 1975-07-09 1975-07-09 Cathion exchange membrane

Publications (2)

Publication Number Publication Date
JPS57172928A true JPS57172928A (en) 1982-10-25
JPS59526B2 JPS59526B2 (en) 1984-01-07

Family

ID=12211065

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57027079A Expired JPS59526B2 (en) 1982-02-22 1982-02-22 Cation exchange membrane

Country Status (1)

Country Link
JP (1) JPS59526B2 (en)

Also Published As

Publication number Publication date
JPS59526B2 (en) 1984-01-07

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