DK228680A - DRY INORGANIC ULTRAFILTRATION MEMBRANES AND PROCEDURES FOR PRODUCING THEREOF - Google Patents
DRY INORGANIC ULTRAFILTRATION MEMBRANES AND PROCEDURES FOR PRODUCING THEREOFInfo
- Publication number
- DK228680A DK228680A DK228680A DK228680A DK228680A DK 228680 A DK228680 A DK 228680A DK 228680 A DK228680 A DK 228680A DK 228680 A DK228680 A DK 228680A DK 228680 A DK228680 A DK 228680A
- Authority
- DK
- Denmark
- Prior art keywords
- carrier
- coating
- approximately
- degrees centigrade
- volatile liquid
- Prior art date
Links
Abstract
A coating is placed on a micro-porous carrier in the presence of a volatile liquid which is able to migrate the coating into the carrier and to desolvatise the coating. The liquid is subsequently volatilised and the resulting dry ultra-filtration membrane is essentially crack-free and has desirable mechanical and chemical stability. The carrier may be pre-treated with a volatile liquid such as acetone before the coating is placed on the carrier. The carrier material may alternatively be dispersed in a volatile liquid such as methanol for the formation of a coating suspension which is placed on the carrier. The coating material, preferably zirconium oxide will have a particle size in the interval from approximately 5 mμm to approximately 10 μm, and the coating will have a thickness of up to approximately 20 μm. The carrier, such as a porous carbon tube will have a pore volume of approximately 5-60 per cent and a pore size of approximately 5 mμm - 40 μm. The stability is increased by burning the membrane at 25 degrees centigrade to 1,500 degrees centigrade, preferably at approximately 400-600 degrees centigrade.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK228680A DK155421C (en) | 1980-05-27 | 1980-05-27 | PROCEDURE FOR THE PREPARATION OF A ROD, INORGANIC ULTRAFILTRATION MEMBRANE AND SUCH MEMBRANE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK228680 | 1980-05-27 | ||
DK228680A DK155421C (en) | 1980-05-27 | 1980-05-27 | PROCEDURE FOR THE PREPARATION OF A ROD, INORGANIC ULTRAFILTRATION MEMBRANE AND SUCH MEMBRANE |
Publications (3)
Publication Number | Publication Date |
---|---|
DK228680A true DK228680A (en) | 1981-11-28 |
DK155421B DK155421B (en) | 1989-04-10 |
DK155421C DK155421C (en) | 1989-09-18 |
Family
ID=8111336
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK228680A DK155421C (en) | 1980-05-27 | 1980-05-27 | PROCEDURE FOR THE PREPARATION OF A ROD, INORGANIC ULTRAFILTRATION MEMBRANE AND SUCH MEMBRANE |
Country Status (1)
Country | Link |
---|---|
DK (1) | DK155421C (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3434912A (en) * | 1965-11-22 | 1969-03-25 | Standard Oil Co | Self-sustaining,thin,crack-free sheet of inorganic aerogel |
FR2251351A1 (en) * | 1973-11-20 | 1975-06-13 | Commissariat Energie Atomique | Ceramic ultra filter mfr. - by making conductive a macroporous ceramic support and coating with a microporous layer |
-
1980
- 1980-05-27 DK DK228680A patent/DK155421C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DK155421B (en) | 1989-04-10 |
DK155421C (en) | 1989-09-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PBP | Patent lapsed |