GB867939A - Improvements in methods of manufacturing porous membranes - Google Patents
Improvements in methods of manufacturing porous membranesInfo
- Publication number
- GB867939A GB867939A GB23365/58A GB2336558A GB867939A GB 867939 A GB867939 A GB 867939A GB 23365/58 A GB23365/58 A GB 23365/58A GB 2336558 A GB2336558 A GB 2336558A GB 867939 A GB867939 A GB 867939A
- Authority
- GB
- United Kingdom
- Prior art keywords
- paste
- plasticizer
- fabric
- benzene
- polytetrafluoroethylene
- 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
- 239000012528 membrane Substances 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000000034 method Methods 0.000 title 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract 9
- 239000004744 fabric Substances 0.000 abstract 5
- 239000004014 plasticizer Substances 0.000 abstract 4
- 229940057995 liquid paraffin Drugs 0.000 abstract 3
- -1 polytetrafluoroethylene Polymers 0.000 abstract 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 3
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- 239000000839 emulsion Substances 0.000 abstract 2
- 239000000843 powder Substances 0.000 abstract 2
- 239000002904 solvent Substances 0.000 abstract 2
- 239000004215 Carbon black (E152) Substances 0.000 abstract 1
- 150000005827 chlorofluoro hydrocarbons Chemical class 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 229910052736 halogen Inorganic materials 0.000 abstract 1
- 125000005843 halogen group Chemical group 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 150000002430 hydrocarbons Chemical class 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 239000002244 precipitate Substances 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 239000001993 wax Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/10—Filter screens essentially made of metal
- B01D39/12—Filter screens essentially made of metal of wire gauze; of knitted wire; of expanded metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/228—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
-
- 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
- B01D67/0079—Manufacture of membranes comprising organic and inorganic components
-
- 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
- B01D71/36—Polytetrafluoroethene
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
- B29C70/20—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Textile Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Laminated Bodies (AREA)
- Cell Separators (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
867,939. Coated metallic fabrics. COMMISSARIAT A L'ENERGIE ATOMIQUE. July 21, 1958 [Aug. 1, 1957], No. 23365/58. Addition to 849,837. Class 140. A porous membrane is produced by coating a corrosion resistant metallic fabric with a moist paste containing fluorohydrocarbon, or chlorofluorohydrocarbon polymers, or halogen substituted hydrocarbon greases, or waxes, and subjecting the fabric thus coated to an adhering treatment in particular by rolling, said paste containing as a plasticizer liquid paraffin per se or in solution in a solvent such as benzene. The plasticizer may be incorporated in an emulsion of polytetrafluoroethylene and the emulsion coagulated by acetone, the precipitate formed constituting the paste to be applied to the fabric, or the plasticizer may be intimately mixed with a powder of polytetrafluoroethylene, the mixture thus obtained constituting the paste. The paste may be formed by intimately mixing 100 gm. polytetrafluoroethylene powder, 20 to 60 c.c. liquid paraffin per se, or from 40 to 80 c.c. of a solution containing from 50 to 80% of liquid paraffin in benzene. The plasticizer may be eliminated by dripping, drying and/or washing with a suitable solvent, e.g. benzene. The metallic fabric may be a very fine nickel grid which may be obtained by electrolytic deposition.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR714914 | 1956-05-22 | ||
| FR72142T | 1957-08-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB867939A true GB867939A (en) | 1961-05-10 |
Family
ID=37663315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23365/58A Expired GB867939A (en) | 1956-05-22 | 1958-07-21 | Improvements in methods of manufacturing porous membranes |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE569432A (en) |
| FR (1) | FR72142E (en) |
| GB (1) | GB867939A (en) |
| LU (1) | LU36265A1 (en) |
| NL (1) | NL112914C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102641621A (en) * | 2011-02-22 | 2012-08-22 | 苏州市东方净水器厂 | Manufacturing technology of tetrafluoroethylene membrane filter element |
-
0
- BE BE569432D patent/BE569432A/xx unknown
- NL NL112914D patent/NL112914C/xx active
- LU LU36265D patent/LU36265A1/xx unknown
-
1957
- 1957-08-01 FR FR72142D patent/FR72142E/en not_active Expired
-
1958
- 1958-07-21 GB GB23365/58A patent/GB867939A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102641621A (en) * | 2011-02-22 | 2012-08-22 | 苏州市东方净水器厂 | Manufacturing technology of tetrafluoroethylene membrane filter element |
Also Published As
| Publication number | Publication date |
|---|---|
| NL112914C (en) | |
| FR72142E (en) | 1960-08-05 |
| LU36265A1 (en) | |
| BE569432A (en) |
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