JPS5670805A - Preparation of selectively permeable membrane for treating organic liquid - Google Patents
Preparation of selectively permeable membrane for treating organic liquidInfo
- Publication number
- JPS5670805A JPS5670805A JP14863979A JP14863979A JPS5670805A JP S5670805 A JPS5670805 A JP S5670805A JP 14863979 A JP14863979 A JP 14863979A JP 14863979 A JP14863979 A JP 14863979A JP S5670805 A JPS5670805 A JP S5670805A
- Authority
- JP
- Japan
- Prior art keywords
- water
- membranes
- formula
- solvent
- mainly composed
- 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.)
- Pending
Links
- 239000012528 membrane Substances 0.000 title abstract 8
- 239000007788 liquid Substances 0.000 title abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 5
- 125000003118 aryl group Chemical group 0.000 abstract 3
- 239000003960 organic solvent Substances 0.000 abstract 3
- 239000002904 solvent Substances 0.000 abstract 3
- 239000004952 Polyamide Substances 0.000 abstract 2
- 239000004962 Polyamide-imide Substances 0.000 abstract 2
- 239000004642 Polyimide Substances 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 229920002647 polyamide Polymers 0.000 abstract 2
- 229920002312 polyamide-imide Polymers 0.000 abstract 2
- 229920001721 polyimide Polymers 0.000 abstract 2
- 229920000642 polymer Polymers 0.000 abstract 2
- 239000000243 solution Substances 0.000 abstract 2
- 239000000758 substrate Substances 0.000 abstract 2
- 239000000701 coagulant Substances 0.000 abstract 1
- 230000001112 coagulating effect Effects 0.000 abstract 1
- 230000035699 permeability Effects 0.000 abstract 1
- 239000011550 stock solution Substances 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
- B01D71/58—Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
- B01D71/62—Polycondensates having nitrogen-containing heterocyclic rings in the main chain
- B01D71/64—Polyimides; Polyamide-imides; Polyester-imides; Polyamide acids or similar polyimide precursors
- B01D71/641—Polyamide-imides
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
PURPOSE:To provide the titled membrane excellent in solvent permeable rate and selective permeability, by a method wherein a substrate is coated with a membrane stock solution containing a polyimide and a polyamide or a polyamideimide, which is formed into membranes by coagulating with water, and then water in the membranes is replaced with a substituting solvent. CONSTITUTION:A dope solvent is used to dissolve either a polyimide mainly composed of a repeating unit of formula I (R<1>: divalent organie gp.) and a polyamide mainly composed of a repeating unit of formula II (R<2>, R<3>: divalent aromatic gp.), or a polyamideimide mainly composed of a repeating units of formula IIIa (R<4>: divalent aromatic gp.) or, in some case, formula IIIb (R<5>, R<6>: divalent aromatic gp.). The obtained dope is coated on a substrate, which is immersed in a coagulant solution consisting of water to cause the polymer to be coagulated into membranes. Then, water in the membranes is replaced with an organic solvent which does not dissolve the polymer and is compatible with water and any organic solvent present in the solution mixture. The obtained membranes are used for treating a liquid mixture mainly consisting of a water-incompatible organic solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14863979A JPS5670805A (en) | 1979-11-15 | 1979-11-15 | Preparation of selectively permeable membrane for treating organic liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14863979A JPS5670805A (en) | 1979-11-15 | 1979-11-15 | Preparation of selectively permeable membrane for treating organic liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5670805A true JPS5670805A (en) | 1981-06-13 |
Family
ID=15457283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14863979A Pending JPS5670805A (en) | 1979-11-15 | 1979-11-15 | Preparation of selectively permeable membrane for treating organic liquid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5670805A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4485056A (en) * | 1981-06-22 | 1984-11-27 | Ube Industries, Ltd. | Production of aromatic polyimide separating membranes |
| JPH05208123A (en) * | 1991-10-26 | 1993-08-20 | Hoechst Ag | Porous asymmetrical semi-permeable membrane |
| JP2014504551A (en) * | 2011-01-24 | 2014-02-24 | ダウ グローバル テクノロジーズ エルエルシー | Composite polyamide membrane |
| JP2014504550A (en) * | 2011-01-24 | 2014-02-24 | ダウ グローバル テクノロジーズ エルエルシー | Composite polyamide membrane |
| WO2017126501A1 (en) * | 2016-01-22 | 2017-07-27 | 東レ株式会社 | Fluid separation membrane, fluid separation membrane module, and porous carbon fiber |
-
1979
- 1979-11-15 JP JP14863979A patent/JPS5670805A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4485056A (en) * | 1981-06-22 | 1984-11-27 | Ube Industries, Ltd. | Production of aromatic polyimide separating membranes |
| JPH05208123A (en) * | 1991-10-26 | 1993-08-20 | Hoechst Ag | Porous asymmetrical semi-permeable membrane |
| JP2014504551A (en) * | 2011-01-24 | 2014-02-24 | ダウ グローバル テクノロジーズ エルエルシー | Composite polyamide membrane |
| JP2014504550A (en) * | 2011-01-24 | 2014-02-24 | ダウ グローバル テクノロジーズ エルエルシー | Composite polyamide membrane |
| WO2017126501A1 (en) * | 2016-01-22 | 2017-07-27 | 東レ株式会社 | Fluid separation membrane, fluid separation membrane module, and porous carbon fiber |
| JPWO2017126501A1 (en) * | 2016-01-22 | 2018-11-08 | 東レ株式会社 | Fluid separation membrane, fluid separation membrane module, and porous carbon fiber |
| US10835874B2 (en) | 2016-01-22 | 2020-11-17 | Toray Industries, Inc. | Fluid separation membrane, fluid separation membrane module, and porous carbon fiber |
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