GB1396091A - Semi-permeable membranes - Google Patents
Semi-permeable membranesInfo
- Publication number
- GB1396091A GB1396091A GB489771A GB489771A GB1396091A GB 1396091 A GB1396091 A GB 1396091A GB 489771 A GB489771 A GB 489771A GB 489771 A GB489771 A GB 489771A GB 1396091 A GB1396091 A GB 1396091A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- copolymer
- properties
- solvent
- feb
- 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
Links
- 239000012528 membrane Substances 0.000 title abstract 5
- 239000000178 monomer Substances 0.000 abstract 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 abstract 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 abstract 3
- 229920001577 copolymer Polymers 0.000 abstract 3
- 239000002904 solvent Substances 0.000 abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 abstract 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 abstract 1
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 abstract 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 abstract 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 abstract 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 abstract 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Natural products CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000006184 cosolvent Substances 0.000 abstract 1
- 229960001760 dimethyl sulfoxide Drugs 0.000 abstract 1
- 230000002209 hydrophobic effect Effects 0.000 abstract 1
- 229920002521 macromolecule Polymers 0.000 abstract 1
- 239000002798 polar solvent Substances 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- DQWPFSLDHJDLRL-UHFFFAOYSA-N triethyl phosphate Chemical compound CCOP(=O)(OCC)OCC DQWPFSLDHJDLRL-UHFFFAOYSA-N 0.000 abstract 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 abstract 1
- 229920002554 vinyl polymer Polymers 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
- B01D71/40—Polymers of unsaturated acids or derivatives thereof, e.g. salts, amides, imides, nitriles, anhydrides, esters
- B01D71/401—Polymers based on the polymerisation of acrylic acid, e.g. polyacrylate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
- B01D67/00091—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching by evaporation
-
- 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
- B01D2323/00—Details relating to membrane preparation
- B01D2323/02—Hydrophilization
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/08—Specific temperatures applied
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2323/00—Details relating to membrane preparation
- B01D2323/12—Specific ratios of components used
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/04—Characteristic thickness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/36—Hydrophilic membranes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
1396091 Semipermeable membranes BABCOCK & WILCOX Ltd 18 Feb 1972 [18 Feb 1971] 4897/71 Heading B5B [Also in Division B1] Semipermeable membranes are made from a copolymer prepared from a monomer of a substituted or unsubstituted vinyl type having the formula and of hydrophilic properties and a similar compound but of hydrophobic properties. The proportions and properties of the monomers are sufficiently balanced for the copolymer to be insoluble in, but able to absorb, water. The copolymer is dissolved in an organic polar solvent which readily dissolves it and which has a relatively low vapour pressure (as herein defined), the solution is cast into a film, solvent is evaporated from it, and the film is then treated with water for at least 10 minutes. The preferred hydrophilic monomers are styrene, methyl methacrylate and acrylonitrile; the preferred hydrophilic monomers are acrylic acid and methacrylic acid. The solvents used in the exemplified processes are dimethylformamide, dimethylsulphoxide, dimethylacetamide and triethylphosphate. Optionally, an additional solvent or cosolvent is added to the solution. Such liquids are water, acetone, methyl ethyl ketone and benzene. Addition of these gives a membrane of porosity such that macromolecules do not pass across it but smaller molecules do. If membranes able to reject salts are required these additional liquids are not added.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB489771A GB1396091A (en) | 1971-02-18 | 1971-02-18 | Semi-permeable membranes |
| DE19722207656 DE2207656A1 (en) | 1971-02-18 | 1972-02-18 | Process for the production of semi-permeable membranes |
| CH233672A CH577837A5 (en) | 1971-02-18 | 1972-02-18 | |
| FR7205500A FR2125586B1 (en) | 1971-02-18 | 1972-02-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB489771A GB1396091A (en) | 1971-02-18 | 1971-02-18 | Semi-permeable membranes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1396091A true GB1396091A (en) | 1975-05-29 |
Family
ID=9785936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB489771A Expired GB1396091A (en) | 1971-02-18 | 1971-02-18 | Semi-permeable membranes |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH577837A5 (en) |
| DE (1) | DE2207656A1 (en) |
| FR (1) | FR2125586B1 (en) |
| GB (1) | GB1396091A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2130069A (en) * | 1982-08-06 | 1984-05-31 | Foremost Mckesson | Whey treatment process and product |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1047997B (en) * | 1975-09-11 | 1980-10-20 | Fiat Spa | REVERSE OSMOSIS MEMBRANE AND PROCESS FOR ITS MANUFACTURE |
| JPS5938805B2 (en) * | 1979-04-06 | 1984-09-19 | ダイセル化学工業株式会社 | Manufacturing method of semipermeable membrane with selective permselectivity |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1060357B (en) * | 1958-10-15 | 1959-07-02 | Dr Alexander Goetz | Method and apparatus for the production of microporous filter films |
| CH407949A (en) * | 1960-03-16 | 1966-02-28 | Membranfiltergesellschaft Gmbh | Method and device for the production of membrane filters |
| US3344214A (en) * | 1964-03-25 | 1967-09-26 | Univ California | Methods of preparing a semipermeable membrane |
| GB1238180A (en) * | 1967-09-21 | 1971-07-07 | ||
| US3666508A (en) * | 1968-05-22 | 1972-05-30 | Univ California | High flux semipermeable cellulosic derivative membranes with dry handling capabilities and their method of preparation |
| NL170374C (en) * | 1970-06-16 | 1982-11-01 | Monsanto Co | METHOD FOR SEPARATING WATER FROM WATER AND FORMALDEHYD MIXTURES |
| NL171534C (en) * | 1970-06-16 | 1983-04-18 | Monsanto Co | METHOD FOR SEPARATING WATER FROM MIXTURES CONTAINING WATER AND FORMALDEHYD. |
| FR2105502A5 (en) * | 1970-09-09 | 1972-04-28 | Rhone Poulenc Sa |
-
1971
- 1971-02-18 GB GB489771A patent/GB1396091A/en not_active Expired
-
1972
- 1972-02-18 DE DE19722207656 patent/DE2207656A1/en active Pending
- 1972-02-18 CH CH233672A patent/CH577837A5/xx not_active IP Right Cessation
- 1972-02-18 FR FR7205500A patent/FR2125586B1/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2130069A (en) * | 1982-08-06 | 1984-05-31 | Foremost Mckesson | Whey treatment process and product |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2125586B1 (en) | 1977-09-02 |
| FR2125586A1 (en) | 1972-09-29 |
| CH577837A5 (en) | 1976-07-30 |
| DE2207656A1 (en) | 1972-09-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |