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Title:
METHOD FOR PRODUCING HOLLOW FIBER MEMBRANE AND HOLLOW FIBER MEMBRANE MODULE
Document Type and Number:
Japanese Patent JP3724412
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a method for producing hollow fiber membrane, capable of producing the hollow fiber membrane having high strength and high water permeability through the process that scarcely gives environmental loads, is operated at a low cost, and scarcely causes problems of safety, by using a polyvinylidene fluoride resin having high chemical resistance.
SOLUTION: This method for producing the hollow fiber membrane comprises extruding the polyvinylidene fluoride resin solution into a cooling bath and solidifying the extruded solution, wherein the polyvinylidene fluoride resin solution contains at least the polyvinylidene fluoride resin in an amount of 20-60 wt.%, a hydrophilic porosity-giving agent in an amount of 1-30 wt.%, and a poor solvent for the resin, and further has a temperature within a range of 80-175°C.


Inventors:
Koichi Dan
Toshiyuki Ishizaki
Shinichi Minegishi
Masahiro Hemi
Application Number:
JP2001337400A
Publication Date:
December 07, 2005
Filing Date:
November 02, 2001
Export Citation:
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Assignee:
TORAY INDUSTRIES,INC.
International Classes:
B01D63/02; B01D69/08; B01D71/34; C02F1/44; D01F1/08; D01F6/48; (IPC1-7): D01F6/48; B01D69/08; D01F1/08
Domestic Patent References:
JP60216804A
JP59016503A