JPS5513112A - Improved cation exchange membrane having selective permeability for unlike signs - Google Patents
Improved cation exchange membrane having selective permeability for unlike signsInfo
- 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
Links
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5595975A (en) * | 1979-01-10 | 1980-07-21 | Nec Corp | Production of hologram |
-
1978
- 1978-07-14 JP JP8512678A patent/JPS5513112A/en active Granted
Cited By (1)
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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