FR2378624A1 - Procede perfectionne pour preparer un tube microporeux en polymere du fluorure de vinylidene - Google Patents

Procede perfectionne pour preparer un tube microporeux en polymere du fluorure de vinylidene

Info

Publication number
FR2378624A1
FR2378624A1 FR7802411A FR7802411A FR2378624A1 FR 2378624 A1 FR2378624 A1 FR 2378624A1 FR 7802411 A FR7802411 A FR 7802411A FR 7802411 A FR7802411 A FR 7802411A FR 2378624 A1 FR2378624 A1 FR 2378624A1
Authority
FR
France
Prior art keywords
vinylidene fluoride
tube
polymer
fluoride polymer
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
FR7802411A
Other languages
English (en)
Other versions
FR2378624B1 (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.)
Kureha Corp
Original Assignee
Kureha 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
Priority claimed from JP12877677A external-priority patent/JPS5462273A/ja
Application filed by Kureha Corp filed Critical Kureha Corp
Publication of FR2378624A1 publication Critical patent/FR2378624A1/fr
Application granted granted Critical
Publication of FR2378624B1 publication Critical patent/FR2378624B1/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
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/06—Tubular membrane modules
    • B01D63/061—Manufacturing thereof
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0068—Permeability to liquids; Adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/14—Filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

Procédé pour préparer un tube microporeux en polymère de fluorure de vinylidène. On extrude un polymère de fluorure de vinylidène fondu sous forme tubulaire et on fait cristalliser le polymère en le soumettant à orientation par écoulement avec formation d'un tube initial présentant une biréfringence de 15 x 10**-3 à 30 x 10**-3, les cristaux du tube initial de polymère de fluorure de vinylidène présentant un seul pic endothermique étroit à la fusion; on traite le tube initial à la chaleur en l'absence pratiquement complète de tension positive à une température de 80 à 170 degrés C pendant au moins 3 s.; on étire le tube au taux d'étirage de 20 à 200 % de sa longueur initiale à une température de 10 à 100 degrés C; et on traite le tube étiré à la chaleur sous tension à une température de 80 à 160 degrés C pendant au moins 3 s. Le tube microporeux en polymère de fluorure de vinylidène sert en particulier de membrane d'ultrafiltration.
FR7802411A 1977-01-27 1978-01-27 Procede perfectionne pour preparer un tube microporeux en polymere du fluorure de vinylidene Granted FR2378624A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP730577 1977-01-27
JP12877677A JPS5462273A (en) 1977-10-28 1977-10-28 Method of making microporous tube of vinylidene fluoride polymer

Publications (2)

Publication Number Publication Date
FR2378624A1 true FR2378624A1 (fr) 1978-08-25
FR2378624B1 FR2378624B1 (fr) 1982-03-26

Family

ID=26341580

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7802411A Granted FR2378624A1 (fr) 1977-01-27 1978-01-27 Procede perfectionne pour preparer un tube microporeux en polymere du fluorure de vinylidene

Country Status (3)

Country Link
DE (1) DE2803198A1 (fr)
FR (1) FR2378624A1 (fr)
GB (1) GB1553050A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0054354A2 (fr) * 1980-11-14 1982-06-23 Abcor, Inc. Membrane comprenant un mélange intime de polymères

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58201823A (ja) * 1982-05-18 1983-11-24 Asahi Glass Co Ltd イオン交換膜の製造方法
DE3415028C2 (de) * 1984-04-19 1987-01-15 Veritas Gummiwerke AG, 6460 Gelnhausen Verfahren zur Herstellung von vulkanisierten Gummischläuchen
US5198505A (en) * 1991-04-11 1993-03-30 Pall Corporation Uniform polyvinylidene difluoride membranes
WO1998038029A1 (fr) * 1997-02-25 1998-09-03 Elf Atochem S.A. Corps poreux de resine fluoree thermoplastique, procede pour la production de ce corps et utilisation de ce corps pour produire un element d'accumulateur
US7338692B2 (en) * 2003-09-12 2008-03-04 3M Innovative Properties Company Microporous PVDF films
WO2017220312A1 (fr) 2016-06-20 2017-12-28 Solvay Sa Film polymère fluoré

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1544807A (fr) * 1967-09-27 1968-11-08 Celanese Corp Pellicule à cellules ouvertes
GB1173688A (en) * 1966-07-14 1969-12-10 Kureha Chemical Ind Co Ltd Polyvinylidene Fluoride Films
BE769308A (fr) * 1971-07-30 1971-12-30 Polaroid Corp Membranes microporeuses.
FR2124459A1 (fr) * 1971-02-03 1972-09-22 Kureha Chemical Ind Co Ltd
FR2146856A5 (fr) * 1971-07-20 1973-03-02 Kureha Chemical Ind Co Ltd
FR2233354A1 (fr) * 1973-06-14 1975-01-10 Gore & Ass

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1173688A (en) * 1966-07-14 1969-12-10 Kureha Chemical Ind Co Ltd Polyvinylidene Fluoride Films
FR1544807A (fr) * 1967-09-27 1968-11-08 Celanese Corp Pellicule à cellules ouvertes
FR2124459A1 (fr) * 1971-02-03 1972-09-22 Kureha Chemical Ind Co Ltd
FR2146856A5 (fr) * 1971-07-20 1973-03-02 Kureha Chemical Ind Co Ltd
BE769308A (fr) * 1971-07-30 1971-12-30 Polaroid Corp Membranes microporeuses.
FR2233354A1 (fr) * 1973-06-14 1975-01-10 Gore & Ass

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0054354A2 (fr) * 1980-11-14 1982-06-23 Abcor, Inc. Membrane comprenant un mélange intime de polymères
EP0054354A3 (fr) * 1980-11-14 1983-05-18 Abcor, Inc. Membrane comprenant un mélange intime de polymères

Also Published As

Publication number Publication date
GB1553050A (en) 1979-09-19
DE2803198A1 (de) 1978-08-10
FR2378624B1 (fr) 1982-03-26

Similar Documents

Publication Publication Date Title
FR2378624A1 (fr) Procede perfectionne pour preparer un tube microporeux en polymere du fluorure de vinylidene
YU215187A (en) Device for profiled crystals production
ES2029147A6 (es) Material dotado de retraccion reversible y proceso de fabricacion del mismo.
DK291584D0 (da) Stabilisering af smeltekrystallisationstemperatur ved varmebehandling af arylensulfidpolymer
US3788503A (en) Method for producing biaxially molecule-oriented poly-{68 -caproamide resin film
BE899191A (fr) Procede de fabrication de particules monocristallines et leur utilisation dans les anodes de piles electrochimiques.
FR2409330A1 (fr) Fibre de polymere d'acrylonitrile filee a l'etat fondu
FR2375328A1 (fr) Procede d'elimination d'impuretes des masses fondues d'aluminium
EP0341033A3 (fr) Procédé et dispositif d'extrusion
DE3881369D1 (de) Polyarylensulfidfolie und verfahren zur herstellung derselben.
FR2392935A1 (fr) Procede de preparation de granules de bisulfate de sodium non collants
ATE75169T1 (de) Verfahren und vorrichtung zur herstellung von duennwandigen rohren.
EP0509580B1 (fr) Polymère cristallin assoupli et procédé pour sa production
SU1281439A1 (ru) Способ получени одноосноориентированной пленочной ленты
FR2376103A2 (fr) Procede d'obtention du 1,1-difluoroethylene a partir de l'acetylene
JPS5891155A (ja) 強度の大なるアモルフアス鉄合金
EP0319434A3 (fr) Procédé de purification de l'hexaméthylènediamine
JPS6431594A (en) Carbide precipitation hardened co-base alloy welding wire and its production
Anderson et al. Melting, Casting and Alpha-Phase Extrusion of the Uranium--2. 4 Wt.-% Niobium Alloy
DE3260538D1 (en) Method of continuously making a glass strip and apparatus for carrying out the method
JPS56133120A (en) Manufacture of thermal shrinkage tube with head part
ES2048363T3 (es) Procedimiento para la fabricacion de acero nervado para hormigon.
ES344104A1 (es) Un procedimiento para la produccion de una pelicula elasti-ca.
KR910019752A (ko) 고강도 폴리에스테르 필름의 제조방법
FR2425934A1 (fr) Procede d'obtention d'ouvrages a partir de bains de fusion de polymeres cristallisables

Legal Events

Date Code Title Description
ST Notification of lapse