FR2409077A1 - Membranes cellulosiques flexibles microporeuses, leur procede de production et leurs applications - Google Patents
Membranes cellulosiques flexibles microporeuses, leur procede de production et leurs applicationsInfo
- Publication number
- FR2409077A1 FR2409077A1 FR7832489A FR7832489A FR2409077A1 FR 2409077 A1 FR2409077 A1 FR 2409077A1 FR 7832489 A FR7832489 A FR 7832489A FR 7832489 A FR7832489 A FR 7832489A FR 2409077 A1 FR2409077 A1 FR 2409077A1
- Authority
- FR
- France
- Prior art keywords
- membranes
- applications
- production process
- polymers
- cellulose
- 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
- 239000012528 membrane Substances 0.000 title abstract 5
- 238000004519 manufacturing process Methods 0.000 title 1
- 229920000642 polymer Polymers 0.000 abstract 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract 2
- 238000001471 micro-filtration Methods 0.000 abstract 2
- 239000000020 Nitrocellulose Substances 0.000 abstract 1
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 abstract 1
- 229920002678 cellulose Polymers 0.000 abstract 1
- 239000001913 cellulose Substances 0.000 abstract 1
- 229920002301 cellulose acetate Polymers 0.000 abstract 1
- 150000002148 esters Chemical class 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229920001220 nitrocellulos Polymers 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
Classifications
-
- 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
- B01D71/08—Polysaccharides
- B01D71/12—Cellulose derivatives
- B01D71/22—Cellulose ethers
-
- 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
- B01D71/08—Polysaccharides
- B01D71/12—Cellulose derivatives
- B01D71/14—Esters of organic acids
- B01D71/16—Cellulose acetate
-
- 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
- B01D71/08—Polysaccharides
- B01D71/12—Cellulose derivatives
- B01D71/20—Esters of inorganic acids, e.g. cellulose nitrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/14—Ultrafiltration; Microfiltration
- B01D61/147—Microfiltration
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
L'INVENTION CONCERNE DES MEMBRANES DE MICROFILTRATION. LES MEMBRANES DE L'INVENTION RENFERMENT 10 A 50 DE POLYMERES D'ETHERS POLYSACCHARIDIQUES CYANETHYLES EN MELANGE AVEC 50 A 90 DE POLYMERES DE NITRATE DE CELLULOSE, DE POLYMERES D'ACETATE DE CELLULOSE OU DE MELANGES DES DEUX. CES MEMBRANES SONT FLEXIBLES ET MECANIQUEMENT RESISTANTES ET PEUVENT ETRE AISEMENT PLISSEES EN VUE DE LEUR UTILISATION DANS DES CARTOUCHES FILTRANTES DE MEME QU'ON PEUT LES UTILISER A PLAT DANS DES SUPPORTS CLASSIQUES A UNE SEULE PLAQUE OU A PLAQUES MULTIPLES. DE MEME, ELLES ONT UNE MEILLEURE STABILITE THERMIQUE QUE LES MEMBRANES CLASSIQUES A BASE D'UN "ESTER MIXTE" (NITRATEACETATE DE CELLULOSE). APPLICATION A DES OPERATIONS DE MICROFILTRATION DANS L'INDUSTRIE ET DANS D'AUTRES DOMAINES TECHNIQUES.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US85277677A | 1977-11-18 | 1977-11-18 | |
US05/953,377 US4220477A (en) | 1978-10-23 | 1978-10-23 | Flexible microporous cellulosic membranes and methods of formation and use thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2409077A1 true FR2409077A1 (fr) | 1979-06-15 |
FR2409077B1 FR2409077B1 (fr) | 1984-11-16 |
Family
ID=27127086
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7832489A Granted FR2409077A1 (fr) | 1977-11-18 | 1978-11-17 | Membranes cellulosiques flexibles microporeuses, leur procede de production et leurs applications |
Country Status (8)
Country | Link |
---|---|
JP (1) | JPS5490082A (fr) |
BR (1) | BR7807556A (fr) |
CA (1) | CA1096556A (fr) |
DE (1) | DE2849863C3 (fr) |
FR (1) | FR2409077A1 (fr) |
GB (1) | GB2009031B (fr) |
IE (1) | IE47585B1 (fr) |
IT (1) | IT7851950A0 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19613484A1 (de) * | 1996-04-04 | 1997-10-09 | Buna Sow Leuna Olefinverb Gmbh | Formmassen zur Herstellung von Gastrennmembranen |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1421341A (en) * | 1916-08-21 | 1922-06-27 | Zsigmondy Richard | Filter and method of producing same |
US3026571A (en) * | 1956-07-04 | 1962-03-27 | Membranfiltergesellschaft G M | Method of continuous manufacture of membrane filters |
DE2510797A1 (de) * | 1974-03-13 | 1975-09-18 | Fuji Photo Film Co Ltd | Mikroporoese folie |
GB1430323A (en) * | 1974-03-20 | 1976-03-31 | Chem Systems | Process for the preparation of asymmetric reverse osmosis membranes |
-
1978
- 1978-11-09 GB GB7843859A patent/GB2009031B/en not_active Expired
- 1978-11-16 CA CA316,347A patent/CA1096556A/fr not_active Expired
- 1978-11-17 JP JP14122278A patent/JPS5490082A/ja active Granted
- 1978-11-17 FR FR7832489A patent/FR2409077A1/fr active Granted
- 1978-11-17 DE DE2849863A patent/DE2849863C3/de not_active Expired
- 1978-11-17 IE IE2266/78A patent/IE47585B1/en unknown
- 1978-11-17 IT IT7851950A patent/IT7851950A0/it unknown
- 1978-11-17 BR BR7807556A patent/BR7807556A/pt unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1421341A (en) * | 1916-08-21 | 1922-06-27 | Zsigmondy Richard | Filter and method of producing same |
US3026571A (en) * | 1956-07-04 | 1962-03-27 | Membranfiltergesellschaft G M | Method of continuous manufacture of membrane filters |
DE2510797A1 (de) * | 1974-03-13 | 1975-09-18 | Fuji Photo Film Co Ltd | Mikroporoese folie |
GB1430323A (en) * | 1974-03-20 | 1976-03-31 | Chem Systems | Process for the preparation of asymmetric reverse osmosis membranes |
Also Published As
Publication number | Publication date |
---|---|
BR7807556A (pt) | 1979-07-24 |
JPS5490082A (en) | 1979-07-17 |
FR2409077B1 (fr) | 1984-11-16 |
IE782266L (en) | 1979-05-18 |
DE2849863B2 (de) | 1981-03-12 |
GB2009031B (en) | 1982-03-10 |
DE2849863C3 (de) | 1982-06-24 |
DE2849863A1 (de) | 1979-05-31 |
CA1096556A (fr) | 1981-03-03 |
IT7851950A0 (it) | 1978-11-17 |
IE47585B1 (en) | 1984-05-02 |
JPS5634132B2 (fr) | 1981-08-08 |
GB2009031A (en) | 1979-06-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |