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JPS5524506A - Selectively permeable cellulose ester film and manufacture thereof - Google Patents

Selectively permeable cellulose ester film and manufacture thereof

Info

Publication number
JPS5524506A
JPS5524506A JP9607878A JP9607878A JPS5524506A JP S5524506 A JPS5524506 A JP S5524506A JP 9607878 A JP9607878 A JP 9607878A JP 9607878 A JP9607878 A JP 9607878A JP S5524506 A JPS5524506 A JP S5524506A
Authority
JP
Japan
Prior art keywords
cellulose ester
film
dimethyl sulfoxide
molecular weight
manufacture
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
JP9607878A
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 JP9607878A priority Critical patent/JPS5524506A/en
Publication of JPS5524506A publication Critical patent/JPS5524506A/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

PURPOSE:To manufacture permeable film described in the title which has high ultrafiltration velocity for water at a low operation press. and has high removing ratio for high molecular weight material, by flow casting a soln. specifically composed of cellulose ester and dimethyl sulfoxide to make a solidified film. CONSTITUTION:A film-making soln. consisting of 1 part by weight of cellulose ester and 1-25 parts by weight of dimethyl sulfoxide is flow cast and is immersed in a coagulating liq., which is a nonsolvent for cellulose ester and disperses and removes dimethyl sulfoxide, so as to be solidified to form a selectively permeable cellulose ester film, which has 40-95% void; 1-200ml/m<2>.hr.mmHg ultrafiltration velocity for water; 0-100% removing ratio for substances of medium molecular weight about 1,000; 50-100% removing ratio for substances of high molecular weight not smaller than 10,000.
JP9607878A 1978-08-09 1978-08-09 Selectively permeable cellulose ester film and manufacture thereof Pending JPS5524506A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9607878A JPS5524506A (en) 1978-08-09 1978-08-09 Selectively permeable cellulose ester film and manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9607878A JPS5524506A (en) 1978-08-09 1978-08-09 Selectively permeable cellulose ester film and manufacture thereof

Publications (1)

Publication Number Publication Date
JPS5524506A true JPS5524506A (en) 1980-02-21

Family

ID=14155355

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9607878A Pending JPS5524506A (en) 1978-08-09 1978-08-09 Selectively permeable cellulose ester film and manufacture thereof

Country Status (1)

Country Link
JP (1) JPS5524506A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55152501A (en) * 1979-05-14 1980-11-27 Teijin Ltd Cellulose ester-based selectively permeable membrane and its preparation
JPS58213064A (en) * 1982-05-31 1983-12-10 Nippon Paint Co Ltd Corrosion-resistant metal surface treating composition having excellent bending processability and scratching resistance
US4541972A (en) * 1983-12-14 1985-09-17 Exxon Research And Engineering Co. Preparation of cellulose acetate membrane and its use for polar solvent-oil separation
EP0376069A2 (en) * 1988-12-20 1990-07-04 Akzo N.V. Biocompatible dialysis membrane consisting of a mixed polysaccharide ester
WO2000072950A1 (en) * 1999-05-31 2000-12-07 Daicel Chemical Industries, Ltd. Cellulose derivative hollow fiber membrane

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS553859A (en) * 1978-06-26 1980-01-11 Mitsubishi Rayon Co Ltd Producing method of semipermeable membrane

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS553859A (en) * 1978-06-26 1980-01-11 Mitsubishi Rayon Co Ltd Producing method of semipermeable membrane

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55152501A (en) * 1979-05-14 1980-11-27 Teijin Ltd Cellulose ester-based selectively permeable membrane and its preparation
JPS58213064A (en) * 1982-05-31 1983-12-10 Nippon Paint Co Ltd Corrosion-resistant metal surface treating composition having excellent bending processability and scratching resistance
JPH0529661B2 (en) * 1982-05-31 1993-05-06 Nippon Paint Co Ltd
US4541972A (en) * 1983-12-14 1985-09-17 Exxon Research And Engineering Co. Preparation of cellulose acetate membrane and its use for polar solvent-oil separation
EP0376069A2 (en) * 1988-12-20 1990-07-04 Akzo N.V. Biocompatible dialysis membrane consisting of a mixed polysaccharide ester
WO2000072950A1 (en) * 1999-05-31 2000-12-07 Daicel Chemical Industries, Ltd. Cellulose derivative hollow fiber membrane
US6632366B1 (en) 1999-05-31 2003-10-14 Daicel Chemical Industries, Ltd. Cellulose compound hollow fiber membrane

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