GB918187A - Improvements in or relating to the production of membrane filters - Google Patents
Improvements in or relating to the production of membrane filtersInfo
- Publication number
- GB918187A GB918187A GB12033/60A GB1203360A GB918187A GB 918187 A GB918187 A GB 918187A GB 12033/60 A GB12033/60 A GB 12033/60A GB 1203360 A GB1203360 A GB 1203360A GB 918187 A GB918187 A GB 918187A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquids
- forming
- layer
- polyvinyl chloride
- pore
- 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 3
- 239000007788 liquid Substances 0.000 abstract 8
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 abstract 6
- CXWXQJXEFPUFDZ-UHFFFAOYSA-N tetralin Chemical compound C1=CC=C2CCCCC2=C1 CXWXQJXEFPUFDZ-UHFFFAOYSA-N 0.000 abstract 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 abstract 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 abstract 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 abstract 4
- 239000002904 solvent Substances 0.000 abstract 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract 3
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 abstract 2
- 239000004801 Chlorinated PVC Substances 0.000 abstract 2
- 150000001298 alcohols Chemical class 0.000 abstract 2
- 229920000457 chlorinated polyvinyl chloride Polymers 0.000 abstract 2
- 238000009792 diffusion process Methods 0.000 abstract 2
- 230000008020 evaporation Effects 0.000 abstract 2
- 238000001704 evaporation Methods 0.000 abstract 2
- 235000011187 glycerol Nutrition 0.000 abstract 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 229920000642 polymer Polymers 0.000 abstract 2
- 229920000915 polyvinyl chloride Polymers 0.000 abstract 2
- 239000004800 polyvinyl chloride Substances 0.000 abstract 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 abstract 1
- 239000005977 Ethylene Substances 0.000 abstract 1
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 abstract 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/30—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by mixing gases into liquid compositions or plastisols, e.g. frothing with air
-
- 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
- B01D71/30—Polyalkenyl halides
- B01D71/301—Polyvinylchloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
-
- 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
- B01D2323/00—Details relating to membrane preparation
- B01D2323/15—Use of additives
- B01D2323/18—Pore-control agents or pore formers
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2201/00—Foams characterised by the foaming process
- C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
- C08J2201/05—Elimination by evaporation or heat degradation of a liquid phase
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Membrane filters are produced by dissolving polyvinyl chloride or chlorinated polyvinyl chloride in a mixture of liquids, one of which is a true solvent for the polymer and the other is a pore-forming liquid; forming the resultant solution into a layer by pouring it on to a flat surface; and removing the liquids from the layer so formed, either by evaporation or diffusion. Suitable true solvents are ethyl acetate, acetone, ethylene chloride, tetralin and tetrahydrofuran. Specified pore-forming liquids are the series of alcohols from methyl to amyl, especially butyl alcohol, as well as glycerine and ethylene glycol-these may be used in conjunction with small amounts of water.ALSO:Membrane filters are produced by dissolving polyvinyl chloride or chlorinated polyvinyl chloride in a mixture of liquids, one of which is a true solvent for the polymer and the other is a pore-forming liquid; forming the resultant solution into a layer by poruing it on to a flat surface; and removing the liquids from the layer so formed, either by evaporation or diffusion. Suitable true solvents are ethyl acetate, acetone, ethylene chloride, tetralin and tetrahydrofuran. Specified pore-forming liquids are butyl alcohol (the series of alcohols from methyl to amyl alcohol is mentioned) glycerine and ethylene glycol, which may be used in conjunction with small amounts of water.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM41221A DE1178208B (en) | 1959-04-18 | 1959-04-18 | Process for the production of membrane filters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB918187A true GB918187A (en) | 1963-02-13 |
Family
ID=7303946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12033/60A Expired GB918187A (en) | 1959-04-18 | 1960-04-05 | Improvements in or relating to the production of membrane filters |
Country Status (3)
| Country | Link |
|---|---|
| CH (1) | CH400096A (en) |
| DE (1) | DE1178208B (en) |
| GB (1) | GB918187A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102405096A (en) * | 2009-07-06 | 2012-04-04 | 积水化学工业株式会社 | Polymer membrane for water treatment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE859141C (en) * | 1943-01-30 | 1952-12-11 | Freudenberg Carl Kg | Poroese, in particular plastic structures that can be used as filters and diaphragms |
-
1959
- 1959-04-18 DE DEM41221A patent/DE1178208B/en active Pending
-
1960
- 1960-03-12 CH CH280360A patent/CH400096A/en unknown
- 1960-04-05 GB GB12033/60A patent/GB918187A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102405096A (en) * | 2009-07-06 | 2012-04-04 | 积水化学工业株式会社 | Polymer membrane for water treatment |
| EP2452741A1 (en) * | 2009-07-06 | 2012-05-16 | Sekisui Chemical Co., Ltd. | Polymer membrane for water treatment |
| EP2452741A4 (en) * | 2009-07-06 | 2013-12-04 | Sekisui Chemical Co Ltd | Polymer membrane for water treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| CH400096A (en) | 1965-10-15 |
| DE1178208B (en) | 1964-09-17 |
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