CH633453A5 - Membrane synthetique anisotrope. - Google Patents
Membrane synthetique anisotrope. Download PDFInfo
- Publication number
- CH633453A5 CH633453A5 CH1095178A CH1095178A CH633453A5 CH 633453 A5 CH633453 A5 CH 633453A5 CH 1095178 A CH1095178 A CH 1095178A CH 1095178 A CH1095178 A CH 1095178A CH 633453 A5 CH633453 A5 CH 633453A5
- Authority
- CH
- Switzerland
- Prior art keywords
- membrane
- membrane according
- membranes
- layer
- solution
- Prior art date
Links
- 239000012528 membrane Substances 0.000 title claims description 180
- 229920000642 polymer Polymers 0.000 claims description 29
- 238000005345 coagulation Methods 0.000 claims description 28
- 230000015271 coagulation Effects 0.000 claims description 28
- 238000000926 separation method Methods 0.000 claims description 21
- 238000000108 ultra-filtration Methods 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 15
- 150000001875 compounds Chemical class 0.000 claims description 8
- 238000000502 dialysis Methods 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 238000000909 electrodialysis Methods 0.000 claims description 5
- 238000001223 reverse osmosis Methods 0.000 claims description 5
- 239000010408 film Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 239000010409 thin film Substances 0.000 claims description 3
- 238000007865 diluting Methods 0.000 claims description 2
- 210000004027 cell Anatomy 0.000 claims 3
- 210000003850 cellular structure Anatomy 0.000 claims 1
- 238000007654 immersion Methods 0.000 claims 1
- 239000002808 molecular sieve Substances 0.000 claims 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims 1
- 239000010410 layer Substances 0.000 description 42
- 239000000243 solution Substances 0.000 description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- 239000002904 solvent Substances 0.000 description 16
- 230000035699 permeability Effects 0.000 description 13
- 150000003839 salts Chemical class 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 239000007789 gas Substances 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 238000011084 recovery Methods 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 7
- 150000002500 ions Chemical class 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 102000004190 Enzymes Human genes 0.000 description 6
- 108090000790 Enzymes Proteins 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 6
- 238000004090 dissolution Methods 0.000 description 6
- 239000011521 glass Substances 0.000 description 6
- 230000007935 neutral effect Effects 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 229920002302 Nylon 6,6 Polymers 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 239000004952 Polyamide Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 4
- 229920002647 polyamide Polymers 0.000 description 4
- 229920006254 polymer film Polymers 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- 229910052770 Uranium Inorganic materials 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 239000004014 plasticizer Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 239000012465 retentate Substances 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 229920002292 Nylon 6 Polymers 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 235000019253 formic acid Nutrition 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 230000035800 maturation Effects 0.000 description 2
- 239000002609 medium Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000003204 osmotic effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 150000003384 small molecules Chemical class 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- GUBGYTABKSRVRQ-XLOQQCSPSA-N Alpha-Lactose Chemical compound O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@H]1O[C@@H]1[C@@H](CO)O[C@H](O)[C@H](O)[C@H]1O GUBGYTABKSRVRQ-XLOQQCSPSA-N 0.000 description 1
- 239000004382 Amylase Substances 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229910021580 Cobalt(II) chloride Inorganic materials 0.000 description 1
- 229910021592 Copper(II) chloride Inorganic materials 0.000 description 1
- GUBGYTABKSRVRQ-QKKXKWKRSA-N Lactose Natural products OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)C(O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@H]1O GUBGYTABKSRVRQ-QKKXKWKRSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 108010073771 Soybean Proteins Proteins 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 229910052768 actinide Inorganic materials 0.000 description 1
- 150000001255 actinides Chemical class 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- WQZGKKKJIJFFOK-PHYPRBDBSA-N alpha-D-galactose Chemical compound OC[C@H]1O[C@H](O)[C@H](O)[C@@H](O)[C@H]1O WQZGKKKJIJFFOK-PHYPRBDBSA-N 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000000721 bacterilogical effect Effects 0.000 description 1
- 239000003637 basic solution Substances 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 238000001246 colloidal dispersion Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229930182830 galactose Natural products 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000155 isotopic effect Effects 0.000 description 1
- 239000008101 lactose Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000010198 maturation time Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 235000019520 non-alcoholic beverage Nutrition 0.000 description 1
- 235000008935 nutritious Nutrition 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000867 polyelectrolyte Polymers 0.000 description 1
- 229920005597 polymer membrane Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 229940001941 soy protein Drugs 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 235000014101 wine Nutrition 0.000 description 1
Classifications
-
- 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
- B01D69/12—Composite membranes; Ultra-thin membranes
- B01D69/1216—Three or more layers
-
- 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
- B01D67/0016—Coagulation
-
- 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
- B01D67/0081—After-treatment of organic or inorganic membranes
- B01D67/0083—Thermal after-treatment
-
- 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
- B01D71/56—Polyamides, e.g. polyester-amides
-
- 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
- B01D2325/14—Membrane materials having negatively charged functional groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/16—Membrane materials having positively charged functional groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/20—Specific permeability or cut-off range
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Inorganic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPD215577 | 1977-10-21 | ||
| AUPD413478 | 1978-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH633453A5 true CH633453A5 (fr) | 1982-12-15 |
Family
ID=25642186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1095178A CH633453A5 (fr) | 1977-10-21 | 1978-10-23 | Membrane synthetique anisotrope. |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5477289A (OSRAM) |
| BR (1) | BR7806967A (OSRAM) |
| CH (1) | CH633453A5 (OSRAM) |
| DE (1) | DE2845797A1 (OSRAM) |
| DK (1) | DK156813C (OSRAM) |
| GB (1) | GB2006643B (OSRAM) |
| MY (1) | MY8400317A (OSRAM) |
| NZ (1) | NZ188666A (OSRAM) |
| SG (1) | SG45283G (OSRAM) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3028213C2 (de) * | 1980-07-25 | 1990-12-06 | Akzo Gmbh, 5600 Wuppertal | Verfahren zur Herstellung einer Ultrafiltrationsmembran aus Polyamid und daraus hergestellte Membran |
| JPS6028826A (ja) * | 1983-07-26 | 1985-02-14 | Hiroshi Suzuki | かご型ゼオライト薄膜表層を有する複合膜及びその製造法 |
| ATE56592T1 (de) * | 1985-05-16 | 1990-10-15 | Memtec Ltd | Beseitigung und gewinnung pflanzlicher polyphenole. |
| US5700844A (en) * | 1996-04-09 | 1997-12-23 | International Business Machines Corporation | Process for making a foamed polymer |
| US5895263A (en) * | 1996-12-19 | 1999-04-20 | International Business Machines Corporation | Process for manufacture of integrated circuit device |
| US5883219A (en) * | 1997-05-29 | 1999-03-16 | International Business Machines Corporation | Integrated circuit device and process for its manufacture |
| US6333141B1 (en) | 1998-07-08 | 2001-12-25 | International Business Machines Corporation | Process for manufacture of integrated circuit device using inorganic/organic matrix comprising polymers of three dimensional architecture |
| US6093636A (en) * | 1998-07-08 | 2000-07-25 | International Business Machines Corporation | Process for manufacture of integrated circuit device using a matrix comprising porous high temperature thermosets |
| US6399666B1 (en) | 1999-01-27 | 2002-06-04 | International Business Machines Corporation | Insulative matrix material |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE33526C (de) * | N. BLUM in Paris | Gewindeschnetdemaschine | ||
| US3709774A (en) * | 1970-05-13 | 1973-01-09 | Gen Electric | Preparation of asymmetric polymer membranes |
| JPS523343B2 (OSRAM) * | 1972-04-28 | 1977-01-27 | ||
| FR2227942A1 (en) * | 1973-05-02 | 1974-11-29 | Gen Electric | Ultra-thin polymer film made by flotation - of polymer soln. on liquid surface followed by desolvating |
| JPS5193786A (en) * | 1975-02-15 | 1976-08-17 | Makurokagatano chukuseni | |
| DE2615954C3 (de) * | 1975-04-22 | 1981-04-23 | Kuraray Co., Ltd., Kurashiki, Okayama | Membran auf Basis von Polyvinylalkohol |
| JPS5226380A (en) * | 1975-08-25 | 1977-02-26 | Sumitomo Chem Co Ltd | Method of making semipermeable membranes |
| JPS6029282B2 (ja) * | 1976-09-03 | 1985-07-10 | 旭化成株式会社 | 半透膜及びその製造方法 |
-
1978
- 1978-10-16 NZ NZ188666A patent/NZ188666A/xx unknown
- 1978-10-17 DK DK463478A patent/DK156813C/da not_active IP Right Cessation
- 1978-10-18 GB GB7840969A patent/GB2006643B/en not_active Expired
- 1978-10-20 DE DE19782845797 patent/DE2845797A1/de active Granted
- 1978-10-21 JP JP12994178A patent/JPS5477289A/ja active Granted
- 1978-10-23 CH CH1095178A patent/CH633453A5/fr not_active IP Right Cessation
- 1978-10-23 BR BR7806967A patent/BR7806967A/pt unknown
-
1983
- 1983-08-01 SG SG45283A patent/SG45283G/en unknown
-
1984
- 1984-12-30 MY MY317/84A patent/MY8400317A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5477289A (en) | 1979-06-20 |
| DK463478A (da) | 1979-04-22 |
| DE2845797C2 (OSRAM) | 1988-12-29 |
| NZ188666A (en) | 1980-12-19 |
| DE2845797A1 (de) | 1979-05-03 |
| DK156813C (da) | 1990-03-05 |
| GB2006643A (en) | 1979-05-10 |
| GB2006643B (en) | 1982-08-04 |
| JPS5630042B2 (OSRAM) | 1981-07-13 |
| SG45283G (en) | 1984-02-17 |
| DK156813B (da) | 1989-10-09 |
| BR7806967A (pt) | 1979-05-08 |
| MY8400317A (en) | 1984-12-31 |
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