FR2391836A1 - Procede de preparation d'une membrane poreuse en fluorure de polyvinylidene - Google Patents

Procede de preparation d'une membrane poreuse en fluorure de polyvinylidene

Info

Publication number
FR2391836A1
FR2391836A1 FR7815593A FR7815593A FR2391836A1 FR 2391836 A1 FR2391836 A1 FR 2391836A1 FR 7815593 A FR7815593 A FR 7815593A FR 7815593 A FR7815593 A FR 7815593A FR 2391836 A1 FR2391836 A1 FR 2391836A1
Authority
FR
France
Prior art keywords
solvent
polymer
forming bath
membrane
degrees
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.)
Granted
Application number
FR7815593A
Other languages
English (en)
Other versions
FR2391836B1 (fr
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.)
EMD Millipore Corp
Original Assignee
Millipore Corp
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 Millipore Corp filed Critical Millipore Corp
Publication of FR2391836A1 publication Critical patent/FR2391836A1/fr
Application granted granted Critical
Publication of FR2391836B1 publication Critical patent/FR2391836B1/fr
Granted 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
    • B01D71/30—Polyalkenyl halides
    • B01D71/32—Polyalkenyl halides containing fluorine atoms
    • B01D71/34—Polyvinylidene fluoride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
    • B01D67/0011—Casting solutions therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/20—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for porous or cellular articles, e.g. of foam plastics, coarse-pored

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

L'invention a pour objet un procédé continu pour la préparation de membranes microporeuses et de membranes pour filtration moléculaire, consistant à appliquer une couche d'une solution d'un polymère de fluorure de polyvinylidène sur une face d'une bande d'appui supportée rigidement afin d'obtenir une pellicule, puis à faire passer la bande dans un bain de formation dans lequel la membrane est formée. Pour préparer la solution de polymère, on dissout le polymère dans un véhicule liquide qui dissout jusqu'à 25 % du poids du polymère à au moins 50 degrés C, mais qui dissout sensiblement moins du polymère à 20 degrés C environ. On prépare la solution à 50 degrés C ou plus et on maintient le bain de formation à peu près à la température ambiante. Le bain de formation est un mélange du véhicule liquide solvant avec un second liquide miscible avec le solvant mais qui n'est pas un solvant pour le polymère. On maintient la pellicule plongée dans le bain de formation jusqu'à sa transformation en une membrane poreuse dont la structure poreuse est essentiellement complètement formée, on élimine le solvant de la pellicule par lavage et on le remplace par le liquide non-solvant. Après quoi on extrait le solvant résiduel de la membrane poreuse et, après séparation de la membrane d'avec la bande d'appui, on sèche la membrane. Le système solvant-non-solvant préféré pour le bain de formation est un système acétone-eau. Il est préférable que le bain de formation contienne d'environ 70 à 80 % d'acétone, en volume.
FR7815593A 1977-05-25 1978-05-25 Procede de preparation d'une membrane poreuse en fluorure de polyvinylidene Granted FR2391836A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/800,574 US4203848A (en) 1977-05-25 1977-05-25 Processes of making a porous membrane material from polyvinylidene fluoride, and products

Publications (2)

Publication Number Publication Date
FR2391836A1 true FR2391836A1 (fr) 1978-12-22
FR2391836B1 FR2391836B1 (fr) 1983-10-07

Family

ID=25178764

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7815593A Granted FR2391836A1 (fr) 1977-05-25 1978-05-25 Procede de preparation d'une membrane poreuse en fluorure de polyvinylidene

Country Status (6)

Country Link
US (1) US4203848A (fr)
JP (1) JPS5416382A (fr)
CA (1) CA1118560A (fr)
DE (1) DE2822266A1 (fr)
FR (1) FR2391836A1 (fr)
GB (1) GB1594640A (fr)

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EP0037836A1 (fr) * 1979-10-15 1981-10-21 Asahi Kasei Kogyo Kabushiki Kaisha Microfiltre a filament creux en resine de fluorure de polyvinylidene et son procede de production
EP0040670A2 (fr) * 1980-03-28 1981-12-02 Pennwalt Corporation Membrane poreuse en polymère de fluorure de vinylidène et procédé pour sa fabrication
FR2528361A1 (fr) * 1982-03-16 1983-12-16 Parker Pen Co Instrument d'ecriture et son procede de fabrication
EP0100552A2 (fr) * 1982-08-02 1984-02-15 Mitsubishi Rayon Co., Ltd. Membrane à base d'un matériau poreux hydrophobe rendue hydrophile et son procédé de fabrication
EP0175322A2 (fr) * 1984-09-17 1986-03-26 Mitsubishi Rayon Co., Ltd. Membrane rendue hydrophile à base d'un matériau poreux hydrophobe et son procédé de fabrication
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EP0335805A2 (fr) * 1988-04-01 1989-10-04 Terumo Kabushiki Kaisha Procédé de préparation de membrane poreuse et membrane poreuse préparée par un tel procédé

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FR2391837A1 (fr) * 1977-05-25 1978-12-22 Millipore Corp Procede de preparation d'une membrane poreuse en matiere polymere
EP0012557A1 (fr) * 1978-12-06 1980-06-25 Abcor, Inc. Membranes hydrophiles polymères, procédé pour leur préparation, leur application en tant que membranes ultrafiltrantes et membranes précurseurs susceptibles d'y être converties
EP0037836A1 (fr) * 1979-10-15 1981-10-21 Asahi Kasei Kogyo Kabushiki Kaisha Microfiltre a filament creux en resine de fluorure de polyvinylidene et son procede de production
EP0037836A4 (fr) * 1979-10-15 1982-01-26 Asahi Chemical Ind Microfiltre a filament creux en resine de fluorure de polyvinylidene et son procede de production.
EP0040670A2 (fr) * 1980-03-28 1981-12-02 Pennwalt Corporation Membrane poreuse en polymère de fluorure de vinylidène et procédé pour sa fabrication
EP0040670A3 (en) * 1980-03-28 1982-02-10 Pennwalt Corporation Porous vinylidene fluoride polymer membrane and process for its preparation
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EP0100552A2 (fr) * 1982-08-02 1984-02-15 Mitsubishi Rayon Co., Ltd. Membrane à base d'un matériau poreux hydrophobe rendue hydrophile et son procédé de fabrication
EP0175322A2 (fr) * 1984-09-17 1986-03-26 Mitsubishi Rayon Co., Ltd. Membrane rendue hydrophile à base d'un matériau poreux hydrophobe et son procédé de fabrication
EP0175322A3 (en) * 1984-09-17 1987-01-28 Mitsubishi Rayon Co. Ltd. Hydrophilized membrane of porous hydrophobic material and process for preparing the same
EP0264333A2 (fr) * 1986-10-17 1988-04-20 Cytogen Corporation Méthode de préparation de compositions de protéine, chélateur et ion métallique, convenant à l'injection
EP0264333A3 (fr) * 1986-10-17 1988-07-06 Cytogen Corporation Méthode de préparation de compositions de protéine, chélateur et ion métallique, convenant à l'injection
EP0330072A2 (fr) * 1988-02-26 1989-08-30 SEPAREM S.p.A. Membrane semi-perméable de séparation de fluides, son procédé de fabrication et son utilisation en microfiltration, distillation et pour des tissus spéciaux
EP0330072A3 (fr) * 1988-02-26 1990-03-14 SEPAREM S.p.A. Membrane semi-perméable de séparation de fluides, son procédé de fabrication et son utilisation en microfiltration, distillation et pour des tissus spéciaux
EP0335805A2 (fr) * 1988-04-01 1989-10-04 Terumo Kabushiki Kaisha Procédé de préparation de membrane poreuse et membrane poreuse préparée par un tel procédé
EP0335805A3 (fr) * 1988-04-01 1990-04-25 Terumo Kabushiki Kaisha Procédé de préparation de membrane poreuse et membrane poreuse préparée par un tel procédé
US4965291A (en) * 1988-04-01 1990-10-23 Terumo Kabushiki Kaisha Method of manufacturing porous membrane and porous membrane manufactured by the same method

Also Published As

Publication number Publication date
JPS5416382A (en) 1979-02-06
CA1118560A (fr) 1982-02-23
US4203848A (en) 1980-05-20
GB1594640A (en) 1981-08-05
FR2391836B1 (fr) 1983-10-07
DE2822266C2 (fr) 1987-05-07
DE2822266A1 (de) 1978-12-07

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