JPS5599926A - Membrane formation - Google Patents
Membrane formationInfo
- Publication number
- JPS5599926A JPS5599926A JP704979A JP704979A JPS5599926A JP S5599926 A JPS5599926 A JP S5599926A JP 704979 A JP704979 A JP 704979A JP 704979 A JP704979 A JP 704979A JP S5599926 A JPS5599926 A JP S5599926A
- Authority
- JP
- Japan
- Prior art keywords
- membrane
- stretched
- permeability
- water
- coagulated
- 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
Abstract
PURPOSE: To form a selective permeable membrane having a high permeability of water, etc. and a sufficient practical strength, by rinsing a coagulated and regenerated cuprammonium membrane, and by drying the membrane, stretched at a specific ratio in a lateral direction, under tension.
CONSTITUTION: A cuprammonium membrane, coagulated, regenerated, and rinsed with water, is stretched at a ratio of 1.3W2.2 in the lateral direction, and dried under tension. The microstructure of the membrane thus obtained comprises crystalline micelles and molecular chains in the amorphous region oriented almost randomly in the longitudinal and lateral directions, and the networks formed by the stretched chains are markedly enlarged. The permeability of substances, e.g. water permeability, is high, and the tendency to shrink on wetting in the longitudinal and lateral directions provides a negative wet shrinkage, and further a high wet bursting strength.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP704979A JPS5599926A (en) | 1979-01-26 | 1979-01-26 | Membrane formation |
DE3002438A DE3002438C2 (en) | 1979-01-26 | 1980-01-24 | Selectively permeable membrane |
IT19476/80A IT1130229B (en) | 1979-01-26 | 1980-01-25 | CUPRAMMONIUM REGENERATED CELLULOSE MEMBRANES AND THEIR PREPARATION METHOD |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP704979A JPS5599926A (en) | 1979-01-26 | 1979-01-26 | Membrane formation |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5599926A true JPS5599926A (en) | 1980-07-30 |
JPS6259614B2 JPS6259614B2 (en) | 1987-12-11 |
Family
ID=11655191
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP704979A Granted JPS5599926A (en) | 1979-01-26 | 1979-01-26 | Membrane formation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5599926A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61146306A (en) * | 1984-12-20 | 1986-07-04 | Terumo Corp | Preparation of hollow yarn for dialysis |
WO2002070115A1 (en) * | 2001-03-06 | 2002-09-12 | Asahi Kasei Kabushiki Kaisha | Method for producing hollow yarn film |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5433397A (en) * | 1977-08-13 | 1979-03-12 | Hoechst Ag | Viscous membrane* method of producing same and device for dialyzing with same |
-
1979
- 1979-01-26 JP JP704979A patent/JPS5599926A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5433397A (en) * | 1977-08-13 | 1979-03-12 | Hoechst Ag | Viscous membrane* method of producing same and device for dialyzing with same |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61146306A (en) * | 1984-12-20 | 1986-07-04 | Terumo Corp | Preparation of hollow yarn for dialysis |
JPH047256B2 (en) * | 1984-12-20 | 1992-02-10 | Terumo Corp | |
WO2002070115A1 (en) * | 2001-03-06 | 2002-09-12 | Asahi Kasei Kabushiki Kaisha | Method for producing hollow yarn film |
US7128861B2 (en) | 2001-03-06 | 2006-10-31 | Asahi Kasei Chemicals Corporation | Method for producing hollow yarn film |
Also Published As
Publication number | Publication date |
---|---|
JPS6259614B2 (en) | 1987-12-11 |
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