FR2293960B2 - - Google Patents
Info
- Publication number
- FR2293960B2 FR2293960B2 FR7440453A FR7440453A FR2293960B2 FR 2293960 B2 FR2293960 B2 FR 2293960B2 FR 7440453 A FR7440453 A FR 7440453A FR 7440453 A FR7440453 A FR 7440453A FR 2293960 B2 FR2293960 B2 FR 2293960B2
- Authority
- FR
- France
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
- B01D69/1212—Coextruded layers
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7440453A FR2293960A2 (en) | 1974-12-10 | 1974-12-10 | Semi-permeable composite membranes for eg reverse osmosis - comprising polyelectrolyte skin contg sulphonic acid and quat ammonium gps and anisotropic membrane |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7440453A FR2293960A2 (en) | 1974-12-10 | 1974-12-10 | Semi-permeable composite membranes for eg reverse osmosis - comprising polyelectrolyte skin contg sulphonic acid and quat ammonium gps and anisotropic membrane |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2293960A2 FR2293960A2 (en) | 1976-07-09 |
FR2293960B2 true FR2293960B2 (en) | 1978-12-01 |
Family
ID=9145847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7440453A Granted FR2293960A2 (en) | 1974-12-10 | 1974-12-10 | Semi-permeable composite membranes for eg reverse osmosis - comprising polyelectrolyte skin contg sulphonic acid and quat ammonium gps and anisotropic membrane |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2293960A2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6094106A (en) * | 1983-10-27 | 1985-05-27 | Nitto Electric Ind Co Ltd | Manufacture of compound membrane |
US4717395A (en) * | 1986-08-07 | 1988-01-05 | The Dow Chemical Company | Gas separations using membranes comprising sulphonated polyether sulphone |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2165073A1 (en) * | 1971-12-28 | 1973-07-12 | Sartorius Membranfilter Gmbh | MULTI-LAYER FILTER MEMBRANES, METHOD OF MANUFACTURING AND USING THEREOF |
IL43201A (en) * | 1972-09-19 | 1976-11-30 | North Star Res & Dev | Reverse osmosis membrane and its preparation |
-
1974
- 1974-12-10 FR FR7440453A patent/FR2293960A2/en active Granted
Also Published As
Publication number | Publication date |
---|---|
FR2293960A2 (en) | 1976-07-09 |