JPS57174108A - Production of perm selective membrane - Google Patents

Production of perm selective membrane

Info

Publication number
JPS57174108A
JPS57174108A JP5912781A JP5912781A JPS57174108A JP S57174108 A JPS57174108 A JP S57174108A JP 5912781 A JP5912781 A JP 5912781A JP 5912781 A JP5912781 A JP 5912781A JP S57174108 A JPS57174108 A JP S57174108A
Authority
JP
Japan
Prior art keywords
permeated
30min
thickness
selective membrane
solidifying
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
JP5912781A
Other languages
Japanese (ja)
Inventor
Kenichi Kato
Masahiro Yamaguchi
Hiromasa Minematsu
Koki Tamura
Seiichi Yokoyama
Kazumi Iwata
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 JP5912781A priority Critical patent/JPS57174108A/en
Publication of JPS57174108A publication Critical patent/JPS57174108A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To produce an anisotropic perm selective membrane which exhibits umiform performance over a wide area by casting doping liquid on a porous substrate and drying the same partially then solidifying the same by using aq. solidifying liquid of specific temp.
CONSTITUTION: The dope pred. by adding 1pt.wt. polybenzimidazolone, 0.3pt.wt. LiCl and 0.4pt.wt. Ca(NO3)24H2O to 5.1pts.wt. N-methylpyrolidone and mixing and dissolving these is cast at 300μ thickness on polyester taffeta of 150μm thickness and 1cm3/cm2sec air permeability. After this film-like material is dried by hot wind for 5min at 120°C, it is permeated for 30min in an aq. 20wt% NaCl soln. kept at 80°C, whereby it is solidified. Further, this is permeated for 30min in water of ordinary temp, whereby it is rinsed. The resultant permselective membrane exhibits the reverse osmotic performance of 69l/m2 hr and 98.2% salt removal rate.
COPYRIGHT: (C)1982,JPO&Japio
JP5912781A 1981-04-21 1981-04-21 Production of perm selective membrane Pending JPS57174108A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5912781A JPS57174108A (en) 1981-04-21 1981-04-21 Production of perm selective membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5912781A JPS57174108A (en) 1981-04-21 1981-04-21 Production of perm selective membrane

Publications (1)

Publication Number Publication Date
JPS57174108A true JPS57174108A (en) 1982-10-26

Family

ID=13104326

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5912781A Pending JPS57174108A (en) 1981-04-21 1981-04-21 Production of perm selective membrane

Country Status (1)

Country Link
JP (1) JPS57174108A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5980305A (en) * 1982-10-29 1984-05-09 Nok Corp Preparation of ultrafiltration membrane

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS504351A (en) * 1973-05-19 1975-01-17
JPS5031902A (en) * 1973-07-24 1975-03-28
JPS55152507A (en) * 1979-05-17 1980-11-27 Nitto Electric Ind Co Ltd Preparation of selective permeable membrane
JPS55162311A (en) * 1979-06-04 1980-12-17 Nitto Electric Ind Co Ltd Manufacture of selective permeable membrane

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS504351A (en) * 1973-05-19 1975-01-17
JPS5031902A (en) * 1973-07-24 1975-03-28
JPS55152507A (en) * 1979-05-17 1980-11-27 Nitto Electric Ind Co Ltd Preparation of selective permeable membrane
JPS55162311A (en) * 1979-06-04 1980-12-17 Nitto Electric Ind Co Ltd Manufacture of selective permeable membrane

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5980305A (en) * 1982-10-29 1984-05-09 Nok Corp Preparation of ultrafiltration membrane

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