JPS5742740A - Production of porous membrane - Google Patents
Production of porous membraneInfo
- Publication number
- JPS5742740A JPS5742740A JP55117934A JP11793480A JPS5742740A JP S5742740 A JPS5742740 A JP S5742740A JP 55117934 A JP55117934 A JP 55117934A JP 11793480 A JP11793480 A JP 11793480A JP S5742740 A JPS5742740 A JP S5742740A
- Authority
- JP
- Japan
- Prior art keywords
- cellulose derivative
- solvent
- porous membrane
- cellulose
- membrane
- 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
Landscapes
- External Artificial Organs (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
PURPOSE: To obtain a porous membrane having a large pore size which is useful as a blood-treating membrane, etc., by immersing a soln. of a cellulose derivative in a coagulating agent having a specified coagulation value range and contg. an org. solvent which is a non-solvent for said cellulose derivative.
CONSTITUTION: A soln. obtd. by dissolving a cellulose derivative in a solvent, is immersed in a coagulating agent having a coagulation value of 40W250 and contg. at least 60wt% org. solvent, such as methanol or benzene, which is a non-solvent for the above cellulose derivative, whereby the cellulose derivative is coagulated to produce a uniform porous membrane having an average pore size of 0.05W20μ. Particularly, when a mixture of cellulose diacetate having an acetyl value of 52% or above and cellulose triacetate having an acetyl value of 60% or above in a weight ratio of 1/14W10/5, is used as a cellulose derivative, a porous membrane havnig large porosity and high mechanical strength can be obtained.
USE: Sterile water-treating membrane, etc.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55117934A JPS5742740A (en) | 1980-08-27 | 1980-08-27 | Production of porous membrane |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55117934A JPS5742740A (en) | 1980-08-27 | 1980-08-27 | Production of porous membrane |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5742740A true JPS5742740A (en) | 1982-03-10 |
Family
ID=14723818
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55117934A Pending JPS5742740A (en) | 1980-08-27 | 1980-08-27 | Production of porous membrane |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5742740A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60187307A (en) * | 1984-03-07 | 1985-09-24 | Agency Of Ind Science & Technol | Preparation of cellulose membrane |
EP0636403A2 (en) * | 1993-07-28 | 1995-02-01 | Toyo Boseki Kabushiki Kaisha | Cellulose acetate hemodialysis membrane |
US5387345A (en) * | 1992-05-20 | 1995-02-07 | Akzo Nv | Cellulose acetate membranes |
EP2354287A1 (en) | 2010-01-29 | 2011-08-10 | Momoi Fishing Net MFG Co., Ltd. | Fishing net and method for manufacturing the same |
-
1980
- 1980-08-27 JP JP55117934A patent/JPS5742740A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60187307A (en) * | 1984-03-07 | 1985-09-24 | Agency Of Ind Science & Technol | Preparation of cellulose membrane |
US5387345A (en) * | 1992-05-20 | 1995-02-07 | Akzo Nv | Cellulose acetate membranes |
US5505890A (en) * | 1992-05-20 | 1996-04-09 | Akzo N.V. | Process for manufacturing cellulose acetate membranes |
EP0636403A2 (en) * | 1993-07-28 | 1995-02-01 | Toyo Boseki Kabushiki Kaisha | Cellulose acetate hemodialysis membrane |
EP0636403A3 (en) * | 1993-07-28 | 1996-03-27 | Toyo Boseki | Cellulose acetate hemodialysis membrane. |
US5624561A (en) * | 1993-07-28 | 1997-04-29 | Toyo Boseki Kabushiki Kaisha | Cellulose acetate hemodialysis membrane |
US5783124A (en) * | 1993-07-28 | 1998-07-21 | Toyo Boseki Kabushiki Kaisha | Cellulose acetate hemodialysis membrane |
EP2354287A1 (en) | 2010-01-29 | 2011-08-10 | Momoi Fishing Net MFG Co., Ltd. | Fishing net and method for manufacturing the same |
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