JPS5513112A - Improved cation exchange membrane having selective permeability for unlike signs - Google Patents

Improved cation exchange membrane having selective permeability for unlike signs

Info

Publication number
JPS5513112A
JPS5513112A JP8512678A JP8512678A JPS5513112A JP S5513112 A JPS5513112 A JP S5513112A JP 8512678 A JP8512678 A JP 8512678A JP 8512678 A JP8512678 A JP 8512678A JP S5513112 A JPS5513112 A JP S5513112A
Authority
JP
Japan
Prior art keywords
layer
cation exchange
group
exchange membrane
membrane
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
JP8512678A
Other languages
Japanese (ja)
Other versions
JPS6115886B2 (en
Inventor
Toshikatsu Sada
Kensuke Moya
Akihiko Nakahara
Hideji Baba
Masaki Shiromizu
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.)
Tokuyama Corp
Original Assignee
Tokuyama Corp
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 Tokuyama Corp filed Critical Tokuyama Corp
Priority to JP8512678A priority Critical patent/JPS5513112A/en
Publication of JPS5513112A publication Critical patent/JPS5513112A/en
Publication of JPS6115886B2 publication Critical patent/JPS6115886B2/ja
Granted legal-status Critical Current

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Abstract

PURPOSE: To raise the chemical-resistance and unlike signs selective permeability of membrane by providing a structure in which a fluorine-containing cation exchange membrane is built into three layers, and the second layer having a medium acidity is placed between the first layer and the third layer in order to reduce gradually the acidity.
CONSTITUTION: With a fluorine-containing cation exchange membrane in which at least one fluorine element combines with carbon which combines with cation exchange groups, a three-layered structure having respectively different cation exchange groups is built, in which the first layer has sulfonic acid group, the second layer has phosphoric acid group or carboxylic acid group mainly, and the third layer has at least one of -SO2NHR group, -CONHR group, and -C(CF3)2OH group (where R is H, [(CH2)nNH]mH, an alkyl group, or an allyl group). Such a three- layered structure of membrane can be manufactured by treating an ion exchange membrane as a base by a surface treatment method so as to prevent the discontinuout change in the acidity of each layer.
COPYRIGHT: (C)1980,JPO&Japio
JP8512678A 1978-07-14 1978-07-14 Improved cation exchange membrane having selective permeability for unlike signs Granted JPS5513112A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8512678A JPS5513112A (en) 1978-07-14 1978-07-14 Improved cation exchange membrane having selective permeability for unlike signs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8512678A JPS5513112A (en) 1978-07-14 1978-07-14 Improved cation exchange membrane having selective permeability for unlike signs

Publications (2)

Publication Number Publication Date
JPS5513112A true JPS5513112A (en) 1980-01-30
JPS6115886B2 JPS6115886B2 (en) 1986-04-26

Family

ID=13849941

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8512678A Granted JPS5513112A (en) 1978-07-14 1978-07-14 Improved cation exchange membrane having selective permeability for unlike signs

Country Status (1)

Country Link
JP (1) JPS5513112A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5595975A (en) * 1979-01-10 1980-07-21 Nec Corp Production of hologram

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5595975A (en) * 1979-01-10 1980-07-21 Nec Corp Production of hologram

Also Published As

Publication number Publication date
JPS6115886B2 (en) 1986-04-26

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