JPS569420A - Method of production of hollow fiber - Google Patents

Method of production of hollow fiber

Info

Publication number
JPS569420A
JPS569420A JP8473179A JP8473179A JPS569420A JP S569420 A JPS569420 A JP S569420A JP 8473179 A JP8473179 A JP 8473179A JP 8473179 A JP8473179 A JP 8473179A JP S569420 A JPS569420 A JP S569420A
Authority
JP
Japan
Prior art keywords
solvent
same
urea
component
produce
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
JP8473179A
Other languages
Japanese (ja)
Inventor
Yasushi Jo
Akihiko Niina
Noriaki Kaneko
Tetsuo Saito
Toshio Nagase
Noriyuki Ichige
Koji Ichikawa
Hisako Sonobe
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 JP8473179A priority Critical patent/JPS569420A/en
Publication of JPS569420A publication Critical patent/JPS569420A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: A solution containing a cellulose ester, a specific organic acid and urea is extruded through annular slits and at the same time, a specific liquid is introduced into the hollow part to produce hollow fibers suitably used as hemodialyzing membranes because they have no gigantic voids but high permeation selectivity.
CONSTITUTION: (A) Cellulose ester such as cellulose acetate is dissolved in a solvent containing (B) at least one selected from aliphatic monocarboxylic acids such as acetic acid, aliphatic dicarboxylic acids and their anhydrides and (C) urea as additives. The resulting dope is extruded linearly through annular slits and at the same time, (D) at least one selected from (a) a solvent for component A and/or swelling agent or a liquid containing the same, (b) an aqueous salt solution containing a sufficient amount of a water-soluble salt to cause the phase separation from the solvent for component A and (c) a monocyclic monoterpene or liquid containing the same is introduced into the hollow part to produce the objective hollow fibers.
COPYRIGHT: (C)1981,JPO&Japio
JP8473179A 1979-07-04 1979-07-04 Method of production of hollow fiber Pending JPS569420A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8473179A JPS569420A (en) 1979-07-04 1979-07-04 Method of production of hollow fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8473179A JPS569420A (en) 1979-07-04 1979-07-04 Method of production of hollow fiber

Publications (1)

Publication Number Publication Date
JPS569420A true JPS569420A (en) 1981-01-30

Family

ID=13838830

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8473179A Pending JPS569420A (en) 1979-07-04 1979-07-04 Method of production of hollow fiber

Country Status (1)

Country Link
JP (1) JPS569420A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60168502A (en) * 1984-02-10 1985-09-02 Toyobo Co Ltd Dialytic hollow yarn membrane
JPS60193504A (en) * 1984-03-15 1985-10-02 Toyobo Co Ltd Hollow fiber membrane for dialysis
JPS6189840A (en) * 1984-10-11 1986-05-08 尾池工業株式会社 Composite heat-insulating material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60168502A (en) * 1984-02-10 1985-09-02 Toyobo Co Ltd Dialytic hollow yarn membrane
JPS60193504A (en) * 1984-03-15 1985-10-02 Toyobo Co Ltd Hollow fiber membrane for dialysis
JPS6189840A (en) * 1984-10-11 1986-05-08 尾池工業株式会社 Composite heat-insulating material

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