JPS5643415A - Production of hollow fiber - Google Patents

Production of hollow fiber

Info

Publication number
JPS5643415A
JPS5643415A JP11758279A JP11758279A JPS5643415A JP S5643415 A JPS5643415 A JP S5643415A JP 11758279 A JP11758279 A JP 11758279A JP 11758279 A JP11758279 A JP 11758279A JP S5643415 A JPS5643415 A JP S5643415A
Authority
JP
Japan
Prior art keywords
formamide
cellulose ester
solution containing
acetone
solution
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
Application number
JP11758279A
Other languages
Japanese (ja)
Inventor
Noriaki Kaneko
Noriyuki Ichige
Toshio Nagase
Hisako Sonobe
Tetsuo Saito
Koji Ichikawa
Akihiko Niina
Yasushi Jo
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.)
Zeon Corp
Original Assignee
Nippon Zeon 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 Nippon Zeon Co Ltd filed Critical Nippon Zeon Co Ltd
Priority to JP11758279A priority Critical patent/JPS5643415A/en
Publication of JPS5643415A publication Critical patent/JPS5643415A/en
Pending legal-status Critical Current

Links

Landscapes

  • Separation Using Semi-Permeable Membranes (AREA)
  • Artificial Filaments (AREA)

Abstract

PURPOSE: To obtain the titled fiber, useful for a hemodialyzer etc., and having improved removing property of a medium-molecular weight substance, by introducing a specific core liquid into the inner hollow part in extruding a cellulose ester solution in a mixed solvent of acetone with formamide.
CONSTITUTION: A cellulose ester, e.g. cellulose acetate, is dissolved in a mixed solvent of acetone with formamide to prepare a spinning solution containing 32wt% or more the formamide. The resultant solution is then extruded through an annular slit into a filamentary material, and one type selected from (A) a solvent and/or a swelling agent for the cellulose ester or a liquid containing at least one of them, (B) an aqueous solution containing a water-soluble salt in an amount sufficient to cause the phase separation from the spinning solution and (C) a monoterpene or a solution containing it as a core liquid is introduced into the inner hollow part of the filamentary material simultaneously to give the aimed hollow fiber having a great permeability coefficient.
COPYRIGHT: (C)1981,JPO&Japio
JP11758279A 1979-09-13 1979-09-13 Production of hollow fiber Pending JPS5643415A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11758279A JPS5643415A (en) 1979-09-13 1979-09-13 Production of hollow fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11758279A JPS5643415A (en) 1979-09-13 1979-09-13 Production of hollow fiber

Publications (1)

Publication Number Publication Date
JPS5643415A true JPS5643415A (en) 1981-04-22

Family

ID=14715381

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11758279A Pending JPS5643415A (en) 1979-09-13 1979-09-13 Production of hollow fiber

Country Status (1)

Country Link
JP (1) JPS5643415A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60806A (en) * 1983-06-17 1985-01-05 Teijin Ltd Manufacture of plasma albumin permeable hollow yarn membrane

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60806A (en) * 1983-06-17 1985-01-05 Teijin Ltd Manufacture of plasma albumin permeable hollow yarn membrane
JPH0318492B2 (en) * 1983-06-17 1991-03-12 Teijin Ltd

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