JPS55152501A - Cellulose ester-based selectively permeable membrane and its preparation - Google Patents

Cellulose ester-based selectively permeable membrane and its preparation

Info

Publication number
JPS55152501A
JPS55152501A JP5798479A JP5798479A JPS55152501A JP S55152501 A JPS55152501 A JP S55152501A JP 5798479 A JP5798479 A JP 5798479A JP 5798479 A JP5798479 A JP 5798479A JP S55152501 A JPS55152501 A JP S55152501A
Authority
JP
Japan
Prior art keywords
membrane
cellulose ester
selectively permeable
permeable membrane
removal rate
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
JP5798479A
Other languages
Japanese (ja)
Inventor
Masahiro Koga
Ryozo Hasegawa
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.)
Teijin Ltd
Original Assignee
Teijin 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 Teijin Ltd filed Critical Teijin Ltd
Priority to JP5798479A priority Critical patent/JPS55152501A/en
Publication of JPS55152501A publication Critical patent/JPS55152501A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/08—Polysaccharides
    • B01D71/12—Cellulose derivatives
    • B01D71/14—Esters of organic acids

Abstract

PURPOSE:To obtain a selectively permeable membrane of which the ultrafiltration speed of water is rapid and a removal rate of high-molecular substance is high even at low pressure, by a method wherein physical properties and performance of the selectively permeable membrane, whose principal ingredient is a cellulose ester, are adjusted by a membrane manufacturing solvent, whose main component is dimethyl sulfoxide. CONSTITUTION:A membrane manufacturing solvent consisting of a cellulose ester, such as cellulose acetate, and dimethyl sulffoxide is cast, and a membrane is formed and solidified by a coagulating liquid. The ratio of the weight of dimethyl sulfoxide and that of the cellulose ester in the membrane manufacturing solvent is adjusted at that time, and a selectively permeable membrane is obtained of which the percentage of voids is 40-95%, the ultrafiltration speed of water 1-2,000ml/m<2>. hr.mm.Hg, a removal rate of low-molecular substances 0-50%, a removal rate of intermediate-molecular substances 0-100% and a removal rate of high-molecular substances 50-100%. The membrane of which the ultrafiltration speed of water is rapid and the removal efficiency of high-molecular substances is excellent is obtained even at such a low operating pressure.
JP5798479A 1979-05-14 1979-05-14 Cellulose ester-based selectively permeable membrane and its preparation Pending JPS55152501A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5798479A JPS55152501A (en) 1979-05-14 1979-05-14 Cellulose ester-based selectively permeable membrane and its preparation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5798479A JPS55152501A (en) 1979-05-14 1979-05-14 Cellulose ester-based selectively permeable membrane and its preparation

Publications (1)

Publication Number Publication Date
JPS55152501A true JPS55152501A (en) 1980-11-27

Family

ID=13071269

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5798479A Pending JPS55152501A (en) 1979-05-14 1979-05-14 Cellulose ester-based selectively permeable membrane and its preparation

Country Status (1)

Country Link
JP (1) JPS55152501A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63252504A (en) * 1987-04-07 1988-10-19 Toyobo Co Ltd Hollow yarn type blood purifying membrane
WO2012026373A1 (en) * 2010-08-27 2012-03-01 東洋紡績株式会社 Hollow fiber type reverse osmosis membrane and process for production thereof
JP2014205787A (en) * 2013-04-12 2014-10-30 株式会社Kri Production method of porous body of polysaccharide
JP2015074704A (en) * 2013-10-08 2015-04-20 フタムラ化学株式会社 Method for producing heterogeneous cellulose film
JP2016147966A (en) * 2015-02-12 2016-08-18 三菱樹脂株式会社 Porous film
US10252222B2 (en) 2012-02-24 2019-04-09 Toyobo Co., Ltd. Hollow fiber type semipermeable membrane, method for manufacturing the same, module, and water treatment method
US10369530B2 (en) 2012-02-09 2019-08-06 Toyobo Co., Ltd. Hollow fiber semipermeable membrane, method for manufacturing same, module, and water treatment method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5339979A (en) * 1976-09-24 1978-04-12 Daicel Chem Ind Ltd Manufacture of semicpermeable cellulose acetate membrane
JPS5524506A (en) * 1978-08-09 1980-02-21 Teijin Ltd Selectively permeable cellulose ester film and manufacture thereof
JPS5584503A (en) * 1978-12-19 1980-06-25 Teijin Ltd Preparing cellulose ester based selective permeable membrane

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5339979A (en) * 1976-09-24 1978-04-12 Daicel Chem Ind Ltd Manufacture of semicpermeable cellulose acetate membrane
JPS5524506A (en) * 1978-08-09 1980-02-21 Teijin Ltd Selectively permeable cellulose ester film and manufacture thereof
JPS5584503A (en) * 1978-12-19 1980-06-25 Teijin Ltd Preparing cellulose ester based selective permeable membrane

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63252504A (en) * 1987-04-07 1988-10-19 Toyobo Co Ltd Hollow yarn type blood purifying membrane
WO2012026373A1 (en) * 2010-08-27 2012-03-01 東洋紡績株式会社 Hollow fiber type reverse osmosis membrane and process for production thereof
JP4919183B1 (en) * 2010-08-27 2012-04-18 東洋紡績株式会社 Hollow fiber type reverse osmosis membrane and method for producing the same
US8915378B2 (en) 2010-08-27 2014-12-23 Toyobo Co., Ltd. Hollow fiber type reverse osmosis membrane and method for manufacturing the same
US10369530B2 (en) 2012-02-09 2019-08-06 Toyobo Co., Ltd. Hollow fiber semipermeable membrane, method for manufacturing same, module, and water treatment method
US10252222B2 (en) 2012-02-24 2019-04-09 Toyobo Co., Ltd. Hollow fiber type semipermeable membrane, method for manufacturing the same, module, and water treatment method
JP2014205787A (en) * 2013-04-12 2014-10-30 株式会社Kri Production method of porous body of polysaccharide
JP2015074704A (en) * 2013-10-08 2015-04-20 フタムラ化学株式会社 Method for producing heterogeneous cellulose film
JP2016147966A (en) * 2015-02-12 2016-08-18 三菱樹脂株式会社 Porous film

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