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JPS5782515A - Hollow fibrous membrane and its preparation - Google Patents

Hollow fibrous membrane and its preparation

Info

Publication number
JPS5782515A
JPS5782515A JP15629680A JP15629680A JPS5782515A JP S5782515 A JPS5782515 A JP S5782515A JP 15629680 A JP15629680 A JP 15629680A JP 15629680 A JP15629680 A JP 15629680A JP S5782515 A JPS5782515 A JP S5782515A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
solution
coagulating
resin
membrane
annular
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
JP15629680A
Inventor
Sadamu Asada
Takashi Hatano
Shuji Tanaka
Original Assignee
Kanegafuchi Chem Ind 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

Links

Abstract

PURPOSE: To obtain a hollow fibrous membrane, having a high water permeation rate, and scarcely causing the clogging efficiently, by extruding a polysyulfone resin solution through an annular nozzle, introducing a coagulating liquid consisting of a mixture solution of a good solvent with a nonsolvent for the resin into the core part, and coagulating the extruded solution.
CONSTITUTION: A polysulfone resin is dissolved in a solvent, e.g. dimethylformamide, and the resultant solution is then extruded through an annular nozzle. A coagulating liqud consisting of a mixture solution of a good solvent, e.g. dimethylformamide, with a nonsolvent, e.g. 1,4-butanediol, for the polysulfone resin is simultaneously introduced into the core part of the annular nozzle. The extruded solution is then passed through air and coagulated in a coagulating bath to give the aimed fiber having a dense layer having micropores with a pore diameter ≤ about 0.025μ in contact with a layer consisting of a spongy structure containng cavities having a diameter ≥5μ at a volume ratio ≥ about 20% without the reduction in amount of permeated water with increase in the membrane thickness.
COPYRIGHT: (C)1982,JPO&Japio
JP15629680A 1980-11-05 1980-11-05 Hollow fibrous membrane and its preparation Pending JPS5782515A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15629680A JPS5782515A (en) 1980-11-05 1980-11-05 Hollow fibrous membrane and its preparation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15629680A JPS5782515A (en) 1980-11-05 1980-11-05 Hollow fibrous membrane and its preparation

Publications (1)

Publication Number Publication Date
JPS5782515A true true JPS5782515A (en) 1982-05-24

Family

ID=15624705

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15629680A Pending JPS5782515A (en) 1980-11-05 1980-11-05 Hollow fibrous membrane and its preparation

Country Status (1)

Country Link
JP (1) JPS5782515A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS588504A (en) * 1981-07-08 1983-01-18 Toyobo Co Ltd Gas separation membrane comprising polysulfone hollow fiber
JPS588516A (en) * 1981-07-08 1983-01-18 Toyobo Co Ltd Preparation of polysulfone separation membrane
JPS5851911A (en) * 1981-09-22 1983-03-26 Asahi Chem Ind Co Ltd Preparation of aromatic polyether sulfone hollow yarn type semi-permeable membrane
JPS58132111A (en) * 1982-01-29 1983-08-06 Asahi Chem Ind Co Ltd Polysulfone hollow fiber
JPS5921721A (en) * 1982-07-23 1984-02-03 Nok Corp Preparation of hollow filament of polysulfone resin
JPS6051504A (en) * 1983-09-01 1985-03-23 Sumitomo Bakelite Co Ltd Hollow fiber type separation membrane and preparation thereof
EP0294737A2 (en) * 1987-06-12 1988-12-14 Kuraray Co., Ltd. Polysulfone hollow fiber membrane and process for making the same
WO1990003210A1 (en) * 1988-09-29 1990-04-05 Toray Industries, Inc. Porous membrane and process for its manufacture

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4923183A (en) * 1972-05-17 1974-03-01
JPS54145379A (en) * 1978-05-02 1979-11-13 Asahi Chem Ind Co Ltd Aromatic polysulfone hollow fiber semipermeable membrane

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4923183A (en) * 1972-05-17 1974-03-01
JPS54145379A (en) * 1978-05-02 1979-11-13 Asahi Chem Ind Co Ltd Aromatic polysulfone hollow fiber semipermeable membrane

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS588504A (en) * 1981-07-08 1983-01-18 Toyobo Co Ltd Gas separation membrane comprising polysulfone hollow fiber
JPS588516A (en) * 1981-07-08 1983-01-18 Toyobo Co Ltd Preparation of polysulfone separation membrane
JPS5851911A (en) * 1981-09-22 1983-03-26 Asahi Chem Ind Co Ltd Preparation of aromatic polyether sulfone hollow yarn type semi-permeable membrane
JPS58132111A (en) * 1982-01-29 1983-08-06 Asahi Chem Ind Co Ltd Polysulfone hollow fiber
JPH0350005B2 (en) * 1982-01-29 1991-07-31 Asahi Chemical Ind
JPH026849B2 (en) * 1982-07-23 1990-02-14 Nok Corp
JPS5921721A (en) * 1982-07-23 1984-02-03 Nok Corp Preparation of hollow filament of polysulfone resin
JPS6051504A (en) * 1983-09-01 1985-03-23 Sumitomo Bakelite Co Ltd Hollow fiber type separation membrane and preparation thereof
JPH0420651B2 (en) * 1983-09-01 1992-04-06 Sumitomo Bakelite Co
EP0294737A2 (en) * 1987-06-12 1988-12-14 Kuraray Co., Ltd. Polysulfone hollow fiber membrane and process for making the same
EP0294737A3 (en) * 1987-06-12 1990-01-10 Kuraray Co., Ltd. Polysulfone hollow fiber membrane and process for making the same
WO1990003210A1 (en) * 1988-09-29 1990-04-05 Toray Industries, Inc. Porous membrane and process for its manufacture

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