FR2710550B1 - High selectivity asymmetric membranes for gas separation and a process for manufacturing. - Google Patents
High selectivity asymmetric membranes for gas separation and a process for manufacturing.Info
- Publication number
- FR2710550B1 FR2710550B1 FR9411425A FR9411425A FR2710550B1 FR 2710550 B1 FR2710550 B1 FR 2710550B1 FR 9411425 A FR9411425 A FR 9411425A FR 9411425 A FR9411425 A FR 9411425A FR 2710550 B1 FR2710550 B1 FR 2710550B1
- Authority
- FR
- France
- Prior art keywords
- manufacturing
- gas separation
- high selectivity
- asymmetric membranes
- selectivity asymmetric
- 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.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1039—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors comprising halogen-containing substituents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/58—Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
- B01D71/62—Polycondensates having nitrogen-containing heterocyclic rings in the main chain
- B01D71/64—Polyimides; Polyamide-imides; Polyester-imides; Polyamide acids or similar polyimide precursors
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/1042—Copolyimides derived from at least two different tetracarboxylic compounds or two different diamino compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9411425A FR2710550B1 (en) | 1993-09-27 | 1994-09-22 | High selectivity asymmetric membranes for gas separation and a process for manufacturing. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9311549A FR2710549B1 (en) | 1993-09-27 | 1993-09-27 | High selectivity asymmetric membranes for the separation of gases and a process for their production. |
FR9411425A FR2710550B1 (en) | 1993-09-27 | 1994-09-22 | High selectivity asymmetric membranes for gas separation and a process for manufacturing. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2710550A1 FR2710550A1 (en) | 1995-04-07 |
FR2710550B1 true FR2710550B1 (en) | 1998-02-27 |
Family
ID=26230632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9411425A Expired - Fee Related FR2710550B1 (en) | 1993-09-27 | 1994-09-22 | High selectivity asymmetric membranes for gas separation and a process for manufacturing. |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2710550B1 (en) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2193634A1 (en) * | 1972-07-20 | 1974-02-22 | Du Pont | Polyimide semi-permeable membranes |
US4307135A (en) * | 1980-04-08 | 1981-12-22 | The United States Of America As Represented By The Secretary Of The Interior | Process for preparing an asymmetric permselective membrane |
US4705540A (en) * | 1986-04-17 | 1987-11-10 | E. I. Du Pont De Nemours And Company | Polyimide gas separation membranes |
US4717394A (en) * | 1986-10-27 | 1988-01-05 | E. I. Du Pont De Nemours And Company | Polyimide gas separation membranes |
US5042993A (en) * | 1990-07-24 | 1991-08-27 | Air Products And Chemicals, Inc. | Gas separating membranes from polyimide polymers |
JPH057749A (en) * | 1991-04-15 | 1993-01-19 | Nitto Denko Corp | Fluorine-containing polyimide type composite membrane and asymmetric membrane, preparation of them and gas separating/concentrating method using said membranes |
-
1994
- 1994-09-22 FR FR9411425A patent/FR2710550B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2710550A1 (en) | 1995-04-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |
Effective date: 20060531 |