GB895082A - Improvements in or relating to the production of membrane filters - Google Patents
Improvements in or relating to the production of membrane filtersInfo
- Publication number
- GB895082A GB895082A GB8803/60A GB880360A GB895082A GB 895082 A GB895082 A GB 895082A GB 8803/60 A GB8803/60 A GB 8803/60A GB 880360 A GB880360 A GB 880360A GB 895082 A GB895082 A GB 895082A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solvent
- resin
- solution
- gel
- production
- 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 4
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 239000002904 solvent Substances 0.000 abstract 11
- 229920005989 resin Polymers 0.000 abstract 6
- 239000011347 resin Substances 0.000 abstract 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract 2
- 238000001704 evaporation Methods 0.000 abstract 2
- 239000011148 porous material Substances 0.000 abstract 2
- MQWCXKGKQLNYQG-UHFFFAOYSA-N 4-methylcyclohexan-1-ol Chemical compound CC1CCC(O)CC1 MQWCXKGKQLNYQG-UHFFFAOYSA-N 0.000 abstract 1
- GUTLYIVDDKVIGB-OUBTZVSYSA-N Cobalt-60 Chemical compound [60Co] GUTLYIVDDKVIGB-OUBTZVSYSA-N 0.000 abstract 1
- 239000004793 Polystyrene Substances 0.000 abstract 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 abstract 1
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000000470 constituent Substances 0.000 abstract 1
- HPXRVTGHNJAIIH-UHFFFAOYSA-N cyclohexanol Chemical compound OC1CCCCC1 HPXRVTGHNJAIIH-UHFFFAOYSA-N 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 239000012456 homogeneous solution Substances 0.000 abstract 1
- 125000003010 ionic group Chemical group 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000007791 liquid phase Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229920002223 polystyrene Polymers 0.000 abstract 1
- 125000001453 quaternary ammonium group Chemical group 0.000 abstract 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-N sulfonic acid Chemical compound OS(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-N 0.000 abstract 1
- 230000008961 swelling Effects 0.000 abstract 1
- 229920003002 synthetic resin Polymers 0.000 abstract 1
- 239000000057 synthetic resin Substances 0.000 abstract 1
- 238000005406 washing Methods 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
- B01D71/28—Polymers of vinyl aromatic compounds
- B01D71/281—Polystyrene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
-
- 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
- B01D71/28—Polymers of vinyl aromatic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/02—Details relating to pores or porosity of the membranes
- B01D2325/022—Asymmetric membranes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A process for the production of membrane filters of graduated pore size from synthetic resins comprises dissolving the resin in a first solvent, adding to the solution a second and less volatile solvent which is compatible with the solution but does not dissolve the resin, forming a layer from the homogeneous solution so obtained and allowing it to mature without evaporation of solvent, then gelatinising the layer by slowly evaporating the solvents to yield a gel in which the major constituent of the liquid phase is said second solvent, washing out the solvent from the gel by contracting with a liquid which is miscible with the second solvent and drying the resulting membrane filter. The resin may be polystyrene, the first solvent benzene and the second solvent acetone, methyl acetate, cyclohexanol or methylcyclohexanol. Large pore sizes may be obtained where the second solvent is a non-solvent for the resin, smaller sizes where it is a swelling agent for the resin. The membranes may be irradiated, e.g. with a cobalt-60 source, to crosslink the resin, and may be after-treated to introduce ionic groups, e.g. sulphonic acid and quaternary ammonium groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8803/60A GB895082A (en) | 1960-03-12 | 1960-03-12 | Improvements in or relating to the production of membrane filters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8803/60A GB895082A (en) | 1960-03-12 | 1960-03-12 | Improvements in or relating to the production of membrane filters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB895082A true GB895082A (en) | 1962-05-02 |
Family
ID=9859552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8803/60A Expired GB895082A (en) | 1960-03-12 | 1960-03-12 | Improvements in or relating to the production of membrane filters |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB895082A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2413108A1 (en) * | 1977-12-28 | 1979-07-27 | Sumitomo Chemical Co | PROCESS FOR THE MANUFACTURE OF SEMI-PERMEABLE MEMBRANES |
| EP0328012A2 (en) * | 1988-02-11 | 1989-08-16 | The Dow Chemical Company | Microporous asymmetric membranes of syndiotactic vinylaromatic polymers and processes for preparing the same |
-
1960
- 1960-03-12 GB GB8803/60A patent/GB895082A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2413108A1 (en) * | 1977-12-28 | 1979-07-27 | Sumitomo Chemical Co | PROCESS FOR THE MANUFACTURE OF SEMI-PERMEABLE MEMBRANES |
| EP0328012A2 (en) * | 1988-02-11 | 1989-08-16 | The Dow Chemical Company | Microporous asymmetric membranes of syndiotactic vinylaromatic polymers and processes for preparing the same |
| EP0328012A3 (en) * | 1988-02-11 | 1990-05-09 | The Dow Chemical Company | Microporous asymmetric membranes of syndiotactic vinylaromatic polymers and processes for preparing the same |
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