JPS56133007A - Membranous material for ultrafiltration - Google Patents
Membranous material for ultrafiltrationInfo
- Publication number
- JPS56133007A JPS56133007A JP3661980A JP3661980A JPS56133007A JP S56133007 A JPS56133007 A JP S56133007A JP 3661980 A JP3661980 A JP 3661980A JP 3661980 A JP3661980 A JP 3661980A JP S56133007 A JPS56133007 A JP S56133007A
- Authority
- JP
- Japan
- Prior art keywords
- membrane
- nonwoven fabric
- layer
- polypropylene
- inside surface
- 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
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
PURPOSE: To avoid defects of an activated layer of a membrane due to nonuniformity of a fibrous layer by a method wherein polypropylene is used as a porous base material of the membranous material having an ultrafilter membrane formed thereon by coating, and a nonwoven fabric of polysulfone resin is used as the material for the membrane.
CONSTITUTION: A nonwoven fabric of polyester poorer than the polypropylene nonwoven fabric in affinity for solutions is laminated on the polypropylene nonwoven fabric, to produce a double-layer structure facilitating the preparation of a membrane layer. For instance, in one working example, a solution of 30pts. of polyether sulfone and 70pts. of N, N-dimethylacetamide is coated on the inside surface of the tubular polypropylene nonwoven fabric (having an inside diameter of 24.3mm, a thickness of 0.23mm and a weight of 7.6g/m) in a coated thickness of 300μ, is then left to stand for 30min and gelled in water. When an aqueous solution of blue dextran is caused to permeate through the membrane under a pressure of 2kg/cm2, the inside surface of the membrane is devoid of dyed marks due to defects thereof and the membrane showed a favorable performance as the ultrafilter membrane.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3661980A JPS56133007A (en) | 1980-03-21 | 1980-03-21 | Membranous material for ultrafiltration |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3661980A JPS56133007A (en) | 1980-03-21 | 1980-03-21 | Membranous material for ultrafiltration |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56133007A true JPS56133007A (en) | 1981-10-17 |
Family
ID=12474811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3661980A Pending JPS56133007A (en) | 1980-03-21 | 1980-03-21 | Membranous material for ultrafiltration |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56133007A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4837133B1 (en) * | 2011-03-28 | 2011-12-14 | 光紀 植田 | Self-supporting handrail |
-
1980
- 1980-03-21 JP JP3661980A patent/JPS56133007A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4837133B1 (en) * | 2011-03-28 | 2011-12-14 | 光紀 植田 | Self-supporting handrail |
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