IT1109332B - PTFE-reinforced fluoro-polymer ion-exchange membrane - for cells producing chlorine and highly conc. alkali hydroxide - Google Patents
PTFE-reinforced fluoro-polymer ion-exchange membrane - for cells producing chlorine and highly conc. alkali hydroxideInfo
- Publication number
- IT1109332B IT1109332B IT5184578A IT5184578A IT1109332B IT 1109332 B IT1109332 B IT 1109332B IT 5184578 A IT5184578 A IT 5184578A IT 5184578 A IT5184578 A IT 5184578A IT 1109332 B IT1109332 B IT 1109332B
- Authority
- IT
- Italy
- Prior art keywords
- polymer
- fluoro
- fabric
- exchange membrane
- ptfe
- Prior art date
Links
- 239000004811 fluoropolymer Substances 0.000 title abstract 3
- 239000003014 ion exchange membrane Substances 0.000 title abstract 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 title 1
- 229910001854 alkali hydroxide Inorganic materials 0.000 title 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 title 1
- 229910052801 chlorine Inorganic materials 0.000 title 1
- 239000000460 chlorine Substances 0.000 title 1
- 239000004744 fabric Substances 0.000 abstract 4
- 229920000642 polymer Polymers 0.000 abstract 3
- 230000003014 reinforcing effect Effects 0.000 abstract 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical group O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract 2
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 150000001412 amines Chemical class 0.000 abstract 1
- 125000004432 carbon atom Chemical group C* 0.000 abstract 1
- 125000001153 fluoro group Chemical group F* 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 239000012528 membrane Substances 0.000 abstract 1
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
Fabric-reinforced ion exchange membrane is prepd. by first hearing a fluoro-polymer material contg. pendant side chains contg. sulphonyl gps. linked to C atoms, which themselves are linked to at least one F atom, to a temp producing sufficient flow of the polymer by melting to enable it to laminate with an open-meshed reinforcing fabric. The reinforcing fabric is then applied to the surface of the heated polymer with sufficient pressure to ensure that the polymer flows at least partially through the fabric and forms a laminate. The surface of the fluoro-polymer is treated with prim. and/or sec. amine, so that a major portion of the sulphonyl gps. on the surface are converted into the -SO2N-form, to a depth of >=10 (esp. 38-50) mu m. The aminated surface is continuous, does not include any micro-cracks and coasts the reinforcing fabric. Used for the prodn. of Cl2 and alkali metal hdyroxides, partic. in high concns. The membrane does not break and is satisfactory in cells operating under high current yield and low voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT5184578A IT1109332B (en) | 1978-11-09 | 1978-11-09 | PTFE-reinforced fluoro-polymer ion-exchange membrane - for cells producing chlorine and highly conc. alkali hydroxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT5184578A IT1109332B (en) | 1978-11-09 | 1978-11-09 | PTFE-reinforced fluoro-polymer ion-exchange membrane - for cells producing chlorine and highly conc. alkali hydroxide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IT7851845A0 IT7851845A0 (en) | 1978-11-09 |
| IT1109332B true IT1109332B (en) | 1985-12-16 |
Family
ID=11275836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT5184578A IT1109332B (en) | 1978-11-09 | 1978-11-09 | PTFE-reinforced fluoro-polymer ion-exchange membrane - for cells producing chlorine and highly conc. alkali hydroxide |
Country Status (1)
| Country | Link |
|---|---|
| IT (1) | IT1109332B (en) |
-
1978
- 1978-11-09 IT IT5184578A patent/IT1109332B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| IT7851845A0 (en) | 1978-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FI912997A (en) | RAKDON. | |
| IE841438L (en) | Etching and plating processes | |
| ATE119064T1 (en) | METHOD FOR THE ELECTROCHEMICAL CLASSIFICATION OF ALKALINE SULPHATES. | |
| SE7711675L (en) | WHEAT MANUFACTURE | |
| DK127889A (en) | PROCEDURE FOR REGULATING AN ELECTROLYCLE CELL | |
| IT1109332B (en) | PTFE-reinforced fluoro-polymer ion-exchange membrane - for cells producing chlorine and highly conc. alkali hydroxide | |
| FR2413418A1 (en) | PTFE-reinforced fluoro-polymer ion-exchange membrane - for cells producing chlorine and highly conc. alkali hydroxide | |
| FI964521A0 (en) | Method for removing contaminating material from water or wet solid material | |
| ATE40720T1 (en) | ELECTROLYSIS PROCESS. | |
| BR8900951A (en) | ORGANIC POLYMERIC MATERIAL, ION EXCHANGE MEMBRANE, ELECTROLYTIC CELL, PROCESS FOR ELECTROLYSIS OF ALKALINE METAL CHLORIDE AQUEOUS SOLUTION, INTERMEDIATE FOR THE PRODUCTION OF MONOMER AND POLYMERIZABLE MONOMER | |
| FR2518308B1 (en) | ||
| FR2398447A1 (en) | CUTTING DEVICE FOR SELF-LOADING TRAILER | |
| PL240585A1 (en) | Method of installation of ion-exchanger membrane in electrolyser | |
| MY112980A (en) | Process for removing unwanted materials from wanted material. | |
| FR2527516B1 (en) | WELDING OF A CATION EXCHANGE MEMBRANE | |
| JPS52146702A (en) | Method and apparatus for recovering metal by electrolysis | |
| ES485925A1 (en) | Device for the recovery of gases formed during the electrolysis of alkali metal chlorides | |
| BR8802670A (en) | PROCESS FOR THE PRODUCTION OF A FLUORCARBONET AND FLUORCARBONET | |
| FR2365643A1 (en) | Sodium chloride soln. electrolysis using cation exchange membrane - of fluorinated polymer with carboxyl gps. and limited water permeability | |
| JPS5232880A (en) | Treating process of seawater | |
| ES485771A1 (en) | Method for the manufacture of razors and razor assembly obtained by this method. | |
| FR2376854A1 (en) | Vulcanisation accelerating 2,2-benzo-thiazyl-di:sulphide prodn. - by oxidn. of 2-mercapto-benzothiazole with chlorine in aq. medium | |
| IT1068524B (en) | Sodium chloride soln. electrolysis using cation exchange membrane - of fluorinated polymer with carboxyl gps. and limited water permeability | |
| Kanematsu et al. | Relationship Between the Density of Anodic Al 2 O 3 Films and the Contact Potential Differences | |
| JPS5316393A (en) | Purifying method for fused sodium chloride electrolytic bath |