JPS5745304A - Production of turbular semipermeable membrane - Google Patents
Production of turbular semipermeable membraneInfo
- Publication number
- JPS5745304A JPS5745304A JP12040280A JP12040280A JPS5745304A JP S5745304 A JPS5745304 A JP S5745304A JP 12040280 A JP12040280 A JP 12040280A JP 12040280 A JP12040280 A JP 12040280A JP S5745304 A JPS5745304 A JP S5745304A
- Authority
- JP
- Japan
- Prior art keywords
- tubular body
- water
- ventilation
- solvent
- end side
- 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.)
- Granted
Links
- 239000012528 membrane Substances 0.000 title abstract 3
- 238000009423 ventilation Methods 0.000 abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 4
- 239000007788 liquid Substances 0.000 abstract 3
- 239000002904 solvent Substances 0.000 abstract 3
- 230000021736 acetylation Effects 0.000 abstract 2
- 238000006640 acetylation reaction Methods 0.000 abstract 2
- 229920002301 cellulose acetate Polymers 0.000 abstract 2
- 238000005266 casting Methods 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 230000035699 permeability Effects 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 238000007711 solidification Methods 0.000 abstract 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
PURPOSE: To obtain superior water permeability and separating characteristics by casting and coating a liquid for making a cellulose acetate film of prescribed rates of acetylation on the inside surface of a tubular body then allowing the solvent in the liquid to evaporate thence solidifying the same in water and further subjecting the same to heat treatment.
CONSTITUTION: Cellulose acetate of 57W60wt% average rates of acetylation are dissolved in an org. solvent, and the soln. is cast and coated on the inside surface of a tubular body. Next, the ventilation treatment from one end side to the other in the tubular body and conversely the ventilation treatment from the other end side to the one end side are executed alternately both at 5W15m/sec ventilation rates more than twice in total of both directions. Thence, 5W20wt% the solvent in the film making liquid is allowed to evaporate, after which the tubular body is immersed in water in a direction reverse from the above-mentioned final ventilation direction. Further, the tubular semipermeable membrane having undergone such immersion in water and solidification is heat-treated at temp. about ≤100°C, whereby the crystallization of the membrane is accelerated, the mechanical strength is increased and the separating performance improved.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12040280A JPS5848202B2 (en) | 1980-08-30 | 1980-08-30 | Method for manufacturing tubular semipermeable membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12040280A JPS5848202B2 (en) | 1980-08-30 | 1980-08-30 | Method for manufacturing tubular semipermeable membrane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5745304A true JPS5745304A (en) | 1982-03-15 |
| JPS5848202B2 JPS5848202B2 (en) | 1983-10-27 |
Family
ID=14785317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12040280A Expired JPS5848202B2 (en) | 1980-08-30 | 1980-08-30 | Method for manufacturing tubular semipermeable membrane |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5848202B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59140237A (en) * | 1983-01-31 | 1984-08-11 | Asahi Chem Ind Co Ltd | Apparatus for forming porous membrane of hydrophilic polymer |
| JPS60141733A (en) * | 1983-12-29 | 1985-07-26 | Fuji Photo Film Co Ltd | Manufacture of fine porous sheet |
| WO2021235168A1 (en) * | 2020-05-19 | 2021-11-25 | ダイセン・メンブレン・システムズ株式会社 | Tubular separation membrane and tubular separation membrane module comprising same |
-
1980
- 1980-08-30 JP JP12040280A patent/JPS5848202B2/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59140237A (en) * | 1983-01-31 | 1984-08-11 | Asahi Chem Ind Co Ltd | Apparatus for forming porous membrane of hydrophilic polymer |
| JPS60141733A (en) * | 1983-12-29 | 1985-07-26 | Fuji Photo Film Co Ltd | Manufacture of fine porous sheet |
| WO2021235168A1 (en) * | 2020-05-19 | 2021-11-25 | ダイセン・メンブレン・システムズ株式会社 | Tubular separation membrane and tubular separation membrane module comprising same |
| JP7021400B1 (en) * | 2020-05-19 | 2022-02-16 | ダイセン・メンブレン・システムズ株式会社 | Tubular separation membrane and tubular separation membrane module containing it |
| JP2022036298A (en) * | 2020-05-19 | 2022-03-04 | ダイセン・メンブレン・システムズ株式会社 | Tubular separation membrane and tubular separation membrane module containing it |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5848202B2 (en) | 1983-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5342521A (en) | Reverse osmosis or nanofiltration membrane and its production process | |
| JPS56126408A (en) | Semipermeable membrane and its production | |
| JPS5745304A (en) | Production of turbular semipermeable membrane | |
| GB2084895A (en) | Dissolving refractory materials in particular cores from castings | |
| JPS57159587A (en) | Sterilization and purification of water | |
| JP3261761B2 (en) | Method for producing polyvinylidene fluoride porous membrane | |
| JPS57206378A (en) | Filtering method of sake | |
| JPS5455623A (en) | Hollow fiber and its production | |
| JPS5794309A (en) | Production of semipermeable membrane made of polysulfone | |
| JPS5750507A (en) | Permselective membrane and its production | |
| JP3279018B2 (en) | Method for producing porous membrane | |
| JPS5791707A (en) | Composite semipermeable membrane and method for producing the same | |
| JPS5691803A (en) | Semipermeable membrane and its manufacture | |
| JPS5621605A (en) | Separation of liquid by semipermeable composite membrane consisting of furufryl alcohol polymer | |
| JPS55145541A (en) | Ion selective adsorption compound semipermeable membrane and its production | |
| JPS57159503A (en) | Composite semi-permeable membrane and preparation thereof | |
| NL7812664A (en) | Filtration membranes esp. of cellulose acetate - made by casting a polymer soln. contg. a water miscible solvent and successive coagulation in cold and warmer aq. baths | |
| JPS57184404A (en) | Preparation of semi-permeable film | |
| JPS54123583A (en) | Treating method for semipermeable membrane | |
| JPS6148965B2 (en) | ||
| JPS56144195A (en) | Manufacture of supporter for lithographic plate | |
| JPS534097A (en) | Polyamide having sulfonamide at side chain | |
| JPH07256064A (en) | Production of porous membrane | |
| JPS57119809A (en) | Production of ultrafiltration membrane | |
| JPS5524585A (en) | Ceramic porous body |