JPS5511048A - Cellulose acetate base reverse osmosis membrane treating agent - Google Patents
Cellulose acetate base reverse osmosis membrane treating agentInfo
- Publication number
- JPS5511048A JPS5511048A JP8425578A JP8425578A JPS5511048A JP S5511048 A JPS5511048 A JP S5511048A JP 8425578 A JP8425578 A JP 8425578A JP 8425578 A JP8425578 A JP 8425578A JP S5511048 A JPS5511048 A JP S5511048A
- Authority
- JP
- Japan
- Prior art keywords
- cellulose acetate
- reverse osmosis
- osmosis membrane
- treating agent
- acetate base
- 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.)
- Pending
Links
- 229920002301 cellulose acetate Polymers 0.000 title abstract 2
- 239000003795 chemical substances by application Substances 0.000 title abstract 2
- 239000012528 membrane Substances 0.000 title abstract 2
- 238000001223 reverse osmosis Methods 0.000 title abstract 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract 2
- 229920002554 vinyl polymer Polymers 0.000 abstract 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 229920001577 copolymer Polymers 0.000 abstract 1
- 238000010612 desalination reaction Methods 0.000 abstract 1
- 125000004185 ester group Chemical group 0.000 abstract 1
- 125000005670 ethenylalkyl group Chemical group 0.000 abstract 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 abstract 1
- 125000001183 hydrocarbyl group Chemical group 0.000 abstract 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 abstract 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 abstract 1
- 239000003960 organic solvent Substances 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 abstract 1
- 239000013535 sea water Substances 0.000 abstract 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
PURPOSE: The cellulose acetate base reverse osmosis membrane treating agent which is composed primarily of the vinyl polymer having ester groups, carboxyl groups and carboxyester groups at side chains and is useful for treating aqueous solutions containing high concentrations of organic solvents and desalination of sea water.
CONSTITUTION: The vinyl polymer having OR1, CO2H and CO2R2 (R1 and R2 are both hydrocarbon groups and the sum of C number of both is 3 or 4) at its side chains is used as the major component. Here, R1 and R2 are CH3, C2H5, normal propyl, isopropyl, etc. and when both are CH3, these are excluded. This polymer is synthesized by causing, e.g., the copolymer of vinyl alkyl ether and maleic anhydride to react with alcohol.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8425578A JPS5511048A (en) | 1978-07-11 | 1978-07-11 | Cellulose acetate base reverse osmosis membrane treating agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8425578A JPS5511048A (en) | 1978-07-11 | 1978-07-11 | Cellulose acetate base reverse osmosis membrane treating agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5511048A true JPS5511048A (en) | 1980-01-25 |
Family
ID=13825341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8425578A Pending JPS5511048A (en) | 1978-07-11 | 1978-07-11 | Cellulose acetate base reverse osmosis membrane treating agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5511048A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS605659U (en) * | 1983-06-27 | 1985-01-16 | 松下電器産業株式会社 | electric cooker |
| JPS6112451U (en) * | 1984-06-27 | 1986-01-24 | 有限会社 小山製菓 | Mochi pounder |
| US4894165A (en) * | 1987-07-20 | 1990-01-16 | The Dow Chemical Company | Rejection enhancing coatings for reverse osmosis membranes |
| US4909943A (en) * | 1987-07-20 | 1990-03-20 | The Dow Chemical Company | Rejection enhancing coatings for reverse osmosis membranes |
| EP2243543A1 (en) | 2004-10-18 | 2010-10-27 | Kurita Water Industries Ltd. | Agent for increasing rejection with a permeable membrane, process for increasing the rejection, permeable membrane and process for water treatment |
-
1978
- 1978-07-11 JP JP8425578A patent/JPS5511048A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS605659U (en) * | 1983-06-27 | 1985-01-16 | 松下電器産業株式会社 | electric cooker |
| JPS6112451U (en) * | 1984-06-27 | 1986-01-24 | 有限会社 小山製菓 | Mochi pounder |
| US4894165A (en) * | 1987-07-20 | 1990-01-16 | The Dow Chemical Company | Rejection enhancing coatings for reverse osmosis membranes |
| US4909943A (en) * | 1987-07-20 | 1990-03-20 | The Dow Chemical Company | Rejection enhancing coatings for reverse osmosis membranes |
| EP2243543A1 (en) | 2004-10-18 | 2010-10-27 | Kurita Water Industries Ltd. | Agent for increasing rejection with a permeable membrane, process for increasing the rejection, permeable membrane and process for water treatment |
| US8025159B2 (en) | 2004-10-18 | 2011-09-27 | Kurita Water Industries Ltd. | Agent for increasing rejection with a permeable membrane, process for increasing the rejection, permeable membrane and process for water treatment |
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