JPS57131377A - Manufacture of caustic alkali - Google Patents
Manufacture of caustic alkaliInfo
- Publication number
- JPS57131377A JPS57131377A JP1499881A JP1499881A JPS57131377A JP S57131377 A JPS57131377 A JP S57131377A JP 1499881 A JP1499881 A JP 1499881A JP 1499881 A JP1499881 A JP 1499881A JP S57131377 A JPS57131377 A JP S57131377A
- Authority
- JP
- Japan
- Prior art keywords
- membrane
- ion exchange
- acid group
- exchange membrane
- layer
- 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.)
- Pending
Links
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
PURPOSE: To electrolyze an aqueous alkali chloride soln. at low voltage by providing fine unevenness to one side of an ion exchange membrane and forming a porous layer made of specified modified polytetrafluoroethylene on the other side.
CONSTITUTION: To provide fine unevenness to one side of an ion exchange membrane, particles with relatively high hardness are brought into press contact with the side, partially buried in the membrane, and removed. The average depth of the unevenness from the membrane surface is 0.01W50μm, and the average number is 103W1015 per 1cm2 membrane surface. A porous layer is then formed on the other side of the membrane with modified polytetrafluoroethylene copolymerized with a modifier made of fluorine-contg. monomer represented by the formula contg. an acid type functional group such as a sulfonic acid group, a carboxylic acid group or a phosphoric acid group. The functional group content of the layer is about 0.01W30mg/cm2, and the layer has about 0.01W200μm average pore size and about 0.01W100μm thickness. By making use of this ion exchange membrane, electrolysis can be carried out at low voltage.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1499881A JPS57131377A (en) | 1981-02-05 | 1981-02-05 | Manufacture of caustic alkali |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1499881A JPS57131377A (en) | 1981-02-05 | 1981-02-05 | Manufacture of caustic alkali |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57131377A true JPS57131377A (en) | 1982-08-14 |
Family
ID=11876588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1499881A Pending JPS57131377A (en) | 1981-02-05 | 1981-02-05 | Manufacture of caustic alkali |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57131377A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4539084A (en) * | 1983-03-10 | 1985-09-03 | E. I. Du Pont De Nemours And Company | Unreinforced membrane, electrochemical cell and electrolysis process |
| US4552631A (en) * | 1983-03-10 | 1985-11-12 | E. I. Du Pont De Nemours And Company | Reinforced membrane, electrochemical cell and electrolysis process |
| JP2007015789A (en) * | 2005-07-05 | 2007-01-25 | Micronics Japan Co Ltd | In-line buffer device |
| US7938941B2 (en) | 2005-09-14 | 2011-05-10 | Asahi Kasei Chemicals Corporation | Cation-exchange fluorinated membrane for electrolysis and process for producing the same |
-
1981
- 1981-02-05 JP JP1499881A patent/JPS57131377A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4539084A (en) * | 1983-03-10 | 1985-09-03 | E. I. Du Pont De Nemours And Company | Unreinforced membrane, electrochemical cell and electrolysis process |
| US4552631A (en) * | 1983-03-10 | 1985-11-12 | E. I. Du Pont De Nemours And Company | Reinforced membrane, electrochemical cell and electrolysis process |
| JP2007015789A (en) * | 2005-07-05 | 2007-01-25 | Micronics Japan Co Ltd | In-line buffer device |
| US7938941B2 (en) | 2005-09-14 | 2011-05-10 | Asahi Kasei Chemicals Corporation | Cation-exchange fluorinated membrane for electrolysis and process for producing the same |
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