JPS5599926A - Membrane formation - Google Patents

Membrane formation

Info

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
Application number
JP704979A
Other languages
Japanese (ja)
Other versions
JPS6259614B2 (en
Inventor
Shinichi Uematsu
Akira Egami
Masashi Kaneko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Asahi Chemical Industry Co Ltd filed Critical Asahi Chemical Industry Co Ltd
Priority to JP704979A priority Critical patent/JPS5599926A/en
Priority to DE3002438A priority patent/DE3002438C2/en
Priority to IT19476/80A priority patent/IT1130229B/en
Publication of JPS5599926A publication Critical patent/JPS5599926A/en
Publication of JPS6259614B2 publication Critical patent/JPS6259614B2/ja
Granted legal-status Critical Current

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
JP704979A 1979-01-26 1979-01-26 Membrane formation Granted JPS5599926A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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