JPS55155704A - Hollow semipermeable membrane and its production - Google Patents

Hollow semipermeable membrane and its production

Info

Publication number
JPS55155704A
JPS55155704A JP6354979A JP6354979A JPS55155704A JP S55155704 A JPS55155704 A JP S55155704A JP 6354979 A JP6354979 A JP 6354979A JP 6354979 A JP6354979 A JP 6354979A JP S55155704 A JPS55155704 A JP S55155704A
Authority
JP
Japan
Prior art keywords
hollow
superior
semipermeable membrane
vinylidene
water
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
JP6354979A
Other languages
Japanese (ja)
Inventor
Yasushi Jo
Noriaki Kaneko
Akihiko Niina
Tetsuo Saito
Toshio Nagase
Noriyuki Ichige
Koji Ichikawa
Hisako Sonobe
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.)
Zeon Corp
Original Assignee
Nippon Zeon 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 Nippon Zeon Co Ltd filed Critical Nippon Zeon Co Ltd
Priority to JP6354979A priority Critical patent/JPS55155704A/en
Publication of JPS55155704A publication Critical patent/JPS55155704A/en
Pending legal-status Critical Current

Links

Landscapes

  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Artificial Filaments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

PURPOSE: To obtain the semipermeable membrane which is superior in water permeability and endurance by extruding the organic solvent solution of vinyl (vinylidene) chloride-base polymer from a double-tube nozzle to form a hollow fiber and introducing the specific core solution into its hollow part.
CONSTITUTION: Vinyl (vinylidene) halide-base polymer or the like is dissolved in a water soluble organic solvent such as N,N-dimethyl formamide or the like and is forcedly fed from the raw liquid lead-in port 10 of a double-tube nozzle 4, whereby it is wet-type spun to hollow-fiber form. At this time, the core solution containing 25% or more of nonsolvent such as lower alkanol or alkyl myristate which is compatible with the foregoing solvent but does not dissolve the polymer and 25% or less of water is introduced into the core liquid lead-in port 12 of a capillary 11. The hollow semipermeable membrane formed by this method has semipermeability only at its both sides of the outside and therefore it is superior in water permeability and is also superior in chemical resistance, chemical stability, mechanical strength, etc.
COPYRIGHT: (C)1980,JPO&Japio
JP6354979A 1979-05-23 1979-05-23 Hollow semipermeable membrane and its production Pending JPS55155704A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6354979A JPS55155704A (en) 1979-05-23 1979-05-23 Hollow semipermeable membrane and its production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6354979A JPS55155704A (en) 1979-05-23 1979-05-23 Hollow semipermeable membrane and its production

Publications (1)

Publication Number Publication Date
JPS55155704A true JPS55155704A (en) 1980-12-04

Family

ID=13232413

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6354979A Pending JPS55155704A (en) 1979-05-23 1979-05-23 Hollow semipermeable membrane and its production

Country Status (1)

Country Link
JP (1) JPS55155704A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60209205A (en) * 1984-04-03 1985-10-21 Agency Of Ind Science & Technol Preparation of hollow yarn porous membrane comprising polyvinylidene fluoride
WO1987000213A1 (en) * 1985-06-27 1987-01-15 Mitsubishi Rayon Co., Ltd. Composite hollow yarn and a process for producing the same
JPH0369608A (en) * 1989-08-09 1991-03-26 Daicel Chem Ind Ltd Hollow fiber membrane spinning unit with spinneret sliding device
JPH0369607A (en) * 1989-08-09 1991-03-26 Daicel Chem Ind Ltd Hollow fiber membrane spinning unit with spinneret angle-regulative device
JP2020516445A (en) * 2017-04-06 2020-06-11 ダウ グローバル テクノロジーズ エルエルシー Asymmetric polyvinylidene chloride membranes and carbon molecular sieve membranes made therefrom

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60209205A (en) * 1984-04-03 1985-10-21 Agency Of Ind Science & Technol Preparation of hollow yarn porous membrane comprising polyvinylidene fluoride
WO1987000213A1 (en) * 1985-06-27 1987-01-15 Mitsubishi Rayon Co., Ltd. Composite hollow yarn and a process for producing the same
US4741829A (en) * 1985-06-27 1988-05-03 Mitsubishi Rayon Co., Ltd. Composite hollow fibers and method of making same
JPH0369608A (en) * 1989-08-09 1991-03-26 Daicel Chem Ind Ltd Hollow fiber membrane spinning unit with spinneret sliding device
JPH0369607A (en) * 1989-08-09 1991-03-26 Daicel Chem Ind Ltd Hollow fiber membrane spinning unit with spinneret angle-regulative device
JP2020516445A (en) * 2017-04-06 2020-06-11 ダウ グローバル テクノロジーズ エルエルシー Asymmetric polyvinylidene chloride membranes and carbon molecular sieve membranes made therefrom

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