FR2050778A5 - Fluorinated polymer hydrophobic porous - films prepn - Google Patents

Fluorinated polymer hydrophobic porous - films prepn

Info

Publication number
FR2050778A5
FR2050778A5 FR6921208A FR6921208A FR2050778A5 FR 2050778 A5 FR2050778 A5 FR 2050778A5 FR 6921208 A FR6921208 A FR 6921208A FR 6921208 A FR6921208 A FR 6921208A FR 2050778 A5 FR2050778 A5 FR 2050778A5
Authority
FR
France
Prior art keywords
prepn
fluorinated polymer
films
hydrophobic porous
heating
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.)
Expired
Application number
FR6921208A
Other languages
French (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.)
IFP Energies Nouvelles IFPEN
Original Assignee
IFP Energies Nouvelles IFPEN
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 IFP Energies Nouvelles IFPEN filed Critical IFP Energies Nouvelles IFPEN
Priority to FR6921208A priority Critical patent/FR2050778A5/en
Application granted granted Critical
Publication of FR2050778A5 publication Critical patent/FR2050778A5/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01D67/0004—Organic membrane manufacture by agglomeration of particles
    • B01D67/00041—Organic membrane manufacture by agglomeration of particles by sintering
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1638—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being particulate
    • B01D39/1653—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being particulate of synthetic origin
    • B01D39/1661—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being particulate of synthetic origin sintered or bonded
    • 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
    • B01D67/0004—Organic membrane manufacture by agglomeration of particles
    • 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
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/38—Hydrophobic membranes

Abstract

Prepn. is by (a) depositing, on a polished metal plate, a suspension of a fluorinated polymer contg. a dissolved gelling agent and heating to evaporate off some of the suspension medium; (b) placing coated plate in oxidising atmosphere in an oven and heating to cause decompn. of the binder and fritting of the polymer layer, and (c) cooling down the metal plate and detaching the polymer film. The film can be used in electrodes of flammable cells, in gas-liquid exchangers and in filtration systems.
FR6921208A 1969-06-24 1969-06-24 Fluorinated polymer hydrophobic porous - films prepn Expired FR2050778A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR6921208A FR2050778A5 (en) 1969-06-24 1969-06-24 Fluorinated polymer hydrophobic porous - films prepn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6921208A FR2050778A5 (en) 1969-06-24 1969-06-24 Fluorinated polymer hydrophobic porous - films prepn

Publications (1)

Publication Number Publication Date
FR2050778A5 true FR2050778A5 (en) 1971-04-02

Family

ID=9036315

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6921208A Expired FR2050778A5 (en) 1969-06-24 1969-06-24 Fluorinated polymer hydrophobic porous - films prepn

Country Status (1)

Country Link
FR (1) FR2050778A5 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0369466A2 (en) * 1988-11-18 1990-05-23 Daikin Industries, Limited Preparation of a porous film of polytetrafluoroethylene
EP0450894A1 (en) * 1990-03-31 1991-10-09 W.L. GORE & ASSOCIATES (UK) LTD Porous PTFE structures
US5677031A (en) * 1990-03-31 1997-10-14 W. L. Gore & Associates, Inc. Porous PTFE structures

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0369466A2 (en) * 1988-11-18 1990-05-23 Daikin Industries, Limited Preparation of a porous film of polytetrafluoroethylene
EP0369466A3 (en) * 1988-11-18 1990-11-28 Daikin Industries, Limited Porous film of polytetrafluoroethylene and preparation thereof
US5143783A (en) * 1988-11-18 1992-09-01 Daikin Industries, Ltd. Porous film of polytetrafluoroethylene and preparation thereof
EP0450894A1 (en) * 1990-03-31 1991-10-09 W.L. GORE & ASSOCIATES (UK) LTD Porous PTFE structures
US5677031A (en) * 1990-03-31 1997-10-14 W. L. Gore & Associates, Inc. Porous PTFE structures

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Legal Events

Date Code Title Description
ST Notification of lapse