ES2050606A1 - Procedure for the production of a semipermeable membrane - Google Patents
Procedure for the production of a semipermeable membraneInfo
- Publication number
- ES2050606A1 ES2050606A1 ES09201796A ES9201796A ES2050606A1 ES 2050606 A1 ES2050606 A1 ES 2050606A1 ES 09201796 A ES09201796 A ES 09201796A ES 9201796 A ES9201796 A ES 9201796A ES 2050606 A1 ES2050606 A1 ES 2050606A1
- Authority
- ES
- Spain
- Prior art keywords
- procedure
- production
- hydrocarbon
- solvent
- semipermeable 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
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Procedure for the production of a semipermeable membrane. A procedure is described for the production of a high performance composite semipermeable membrane, which does not require the use of an easily-flammable solvent nor of a chlorofluorocarbon solvent which damages the environment. In the procedure of this invention, a solution of a polyfunctional amine and a solution of a polyfunctional acid halide in a hydrocarbon-based solvent with a flash point not lower than 10 degree C are applied on a surface of a microporous substrate in order that an interphase polycondensation reaction may take place as a result of which an ultrafine membrane is formed based on a crosslinked polyamide superimposed on the microporous substrate. A gas is then insuflated over the surface of the ultrafine membrane with the objective of evaporating the hydrocarbon-based solvent, which gas has a velocity at the surface of 2-20 m/sec., a temperature of 1-80 degree C which is lower than the flash point of the hydrocarbon-based solvent, and an absolute humidity not less than 1 g of water per 1 kg of dry gas.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9201796A ES2050606B1 (en) | 1992-09-02 | 1992-09-02 | A PROCEDURE FOR THE PRODUCTION OF A SEMIPERMEABLE MEMBRANE. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9201796A ES2050606B1 (en) | 1992-09-02 | 1992-09-02 | A PROCEDURE FOR THE PRODUCTION OF A SEMIPERMEABLE MEMBRANE. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2050606A1 true ES2050606A1 (en) | 1994-05-16 |
ES2050606B1 ES2050606B1 (en) | 1994-12-01 |
Family
ID=8278087
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES9201796A Expired - Fee Related ES2050606B1 (en) | 1992-09-02 | 1992-09-02 | A PROCEDURE FOR THE PRODUCTION OF A SEMIPERMEABLE MEMBRANE. |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES2050606B1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4277344A (en) * | 1979-02-22 | 1981-07-07 | Filmtec Corporation | Interfacially synthesized reverse osmosis membrane |
EP0085111A1 (en) * | 1981-08-03 | 1983-08-10 | Teijin Limited | Composite semipermeable membrane, process for its production, and method of its use |
GB2139113A (en) * | 1983-03-18 | 1984-11-07 | Culligan Int Co | Reverse osmosis membrane and method for the preparation thereof |
EP0361092A2 (en) * | 1988-09-28 | 1990-04-04 | Hydranautics | Interfacially sythesized reverse osmosis membrane containing an amine salt and processes for preparing the same |
EP0498596A1 (en) * | 1991-02-04 | 1992-08-12 | E.I. Du Pont De Nemours And Company | Process for the manufacture of thin film composite membranes |
EP0503596A2 (en) * | 1991-03-12 | 1992-09-16 | Toray Industries, Inc. | Process for producing composite semipermeable membrane |
-
1992
- 1992-09-02 ES ES9201796A patent/ES2050606B1/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4277344A (en) * | 1979-02-22 | 1981-07-07 | Filmtec Corporation | Interfacially synthesized reverse osmosis membrane |
EP0085111A1 (en) * | 1981-08-03 | 1983-08-10 | Teijin Limited | Composite semipermeable membrane, process for its production, and method of its use |
GB2139113A (en) * | 1983-03-18 | 1984-11-07 | Culligan Int Co | Reverse osmosis membrane and method for the preparation thereof |
EP0361092A2 (en) * | 1988-09-28 | 1990-04-04 | Hydranautics | Interfacially sythesized reverse osmosis membrane containing an amine salt and processes for preparing the same |
EP0498596A1 (en) * | 1991-02-04 | 1992-08-12 | E.I. Du Pont De Nemours And Company | Process for the manufacture of thin film composite membranes |
EP0503596A2 (en) * | 1991-03-12 | 1992-09-16 | Toray Industries, Inc. | Process for producing composite semipermeable membrane |
Also Published As
Publication number | Publication date |
---|---|
ES2050606B1 (en) | 1994-12-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD2A | Announcement of lapse in spain |
Effective date: 20180806 |