FR2050778A5 - Fluorinated polymer hydrophobic porous - films prepn - Google Patents
Fluorinated polymer hydrophobic porous - films prepnInfo
- 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
Links
- 229920002313 fluoropolymer Polymers 0.000 title abstract 2
- 230000002209 hydrophobic effect Effects 0.000 title 1
- 238000010438 heat treatment Methods 0.000 abstract 2
- 239000002184 metal Substances 0.000 abstract 2
- 239000000725 suspension Substances 0.000 abstract 2
- 239000011230 binding agent Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000000151 deposition Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 239000003349 gelling agent Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 229920006254 polymer film Polymers 0.000 abstract 1
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
-
- 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
- B01D67/00041—Organic membrane manufacture by agglomeration of particles by sintering
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Filtering Materials (AREA)
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.
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)
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 |
-
1969
- 1969-06-24 FR FR6921208A patent/FR2050778A5/en not_active Expired
Cited By (5)
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 |