JPS5742740A - Production of porous membrane - Google Patents

Production of porous membrane

Info

Publication number
JPS5742740A
JPS5742740A JP55117934A JP11793480A JPS5742740A JP S5742740 A JPS5742740 A JP S5742740A JP 55117934 A JP55117934 A JP 55117934A JP 11793480 A JP11793480 A JP 11793480A JP S5742740 A JPS5742740 A JP S5742740A
Authority
JP
Japan
Prior art keywords
cellulose derivative
solvent
porous membrane
cellulose
membrane
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
JP55117934A
Other languages
Japanese (ja)
Inventor
Jun Kamo
Hisayoshi Yamamori
Mitsuhiro Matsunaka
Takayuki Hirai
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.)
Mitsubishi Rayon Co Ltd
Original Assignee
Mitsubishi Rayon 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 Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Priority to JP55117934A priority Critical patent/JPS5742740A/en
Publication of JPS5742740A publication Critical patent/JPS5742740A/en
Pending legal-status Critical Current

Links

Landscapes

  • External Artificial Organs (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

PURPOSE: To obtain a porous membrane having a large pore size which is useful as a blood-treating membrane, etc., by immersing a soln. of a cellulose derivative in a coagulating agent having a specified coagulation value range and contg. an org. solvent which is a non-solvent for said cellulose derivative.
CONSTITUTION: A soln. obtd. by dissolving a cellulose derivative in a solvent, is immersed in a coagulating agent having a coagulation value of 40W250 and contg. at least 60wt% org. solvent, such as methanol or benzene, which is a non-solvent for the above cellulose derivative, whereby the cellulose derivative is coagulated to produce a uniform porous membrane having an average pore size of 0.05W20μ. Particularly, when a mixture of cellulose diacetate having an acetyl value of 52% or above and cellulose triacetate having an acetyl value of 60% or above in a weight ratio of 1/14W10/5, is used as a cellulose derivative, a porous membrane havnig large porosity and high mechanical strength can be obtained.
USE: Sterile water-treating membrane, etc.
COPYRIGHT: (C)1982,JPO&Japio
JP55117934A 1980-08-27 1980-08-27 Production of porous membrane Pending JPS5742740A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55117934A JPS5742740A (en) 1980-08-27 1980-08-27 Production of porous membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55117934A JPS5742740A (en) 1980-08-27 1980-08-27 Production of porous membrane

Publications (1)

Publication Number Publication Date
JPS5742740A true JPS5742740A (en) 1982-03-10

Family

ID=14723818

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55117934A Pending JPS5742740A (en) 1980-08-27 1980-08-27 Production of porous membrane

Country Status (1)

Country Link
JP (1) JPS5742740A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60187307A (en) * 1984-03-07 1985-09-24 Agency Of Ind Science & Technol Preparation of cellulose membrane
EP0636403A2 (en) * 1993-07-28 1995-02-01 Toyo Boseki Kabushiki Kaisha Cellulose acetate hemodialysis membrane
US5387345A (en) * 1992-05-20 1995-02-07 Akzo Nv Cellulose acetate membranes
EP2354287A1 (en) 2010-01-29 2011-08-10 Momoi Fishing Net MFG Co., Ltd. Fishing net and method for manufacturing the same

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60187307A (en) * 1984-03-07 1985-09-24 Agency Of Ind Science & Technol Preparation of cellulose membrane
US5387345A (en) * 1992-05-20 1995-02-07 Akzo Nv Cellulose acetate membranes
US5505890A (en) * 1992-05-20 1996-04-09 Akzo N.V. Process for manufacturing cellulose acetate membranes
EP0636403A2 (en) * 1993-07-28 1995-02-01 Toyo Boseki Kabushiki Kaisha Cellulose acetate hemodialysis membrane
EP0636403A3 (en) * 1993-07-28 1996-03-27 Toyo Boseki Cellulose acetate hemodialysis membrane.
US5624561A (en) * 1993-07-28 1997-04-29 Toyo Boseki Kabushiki Kaisha Cellulose acetate hemodialysis membrane
US5783124A (en) * 1993-07-28 1998-07-21 Toyo Boseki Kabushiki Kaisha Cellulose acetate hemodialysis membrane
EP2354287A1 (en) 2010-01-29 2011-08-10 Momoi Fishing Net MFG Co., Ltd. Fishing net and method for manufacturing the same

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