Polysulfone-supported separation membrane
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United States of America Patent
Stats
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Oct 8, 2024
Grant Date -
Aug 8, 2024
app pub date -
Mar 13, 2024
filing date -
Oct 17, 2019
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A multi-layer membrane which has a mixed polyamide selective layer supported on a porous polysulfone layer. The mixed polyamide selective layer includes reacted units of a polyfunctional acyl halide (e.g. trimesoyl chloride) and a diamine mixture containing 4,7,10-trioxa-1,13-tridecanediamine and a cyclic diamine (e.g. piperazine). Methods of fabricating the multi-layer membrane via techniques such as phase inversion and interfacial polymerization are described. The inventive membrane is evaluated on its water flux and salt rejection (e.g. sulfate and chloride salts) capabilities. A water desalination system containing the multi-layer membrane(s) is also provided.
First Claim
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Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| US | B2 | US11969696 | Oct 17, 2019 |
| US | B2 | US12121868 | Mar 13, 2024 |
| US | B2 | US12097473 | Mar 13, 2024 |
International Classification(s)
- 2024 Application Filing Year
- C02F Class
- 808 Applications Filed
- 95 Patents Issued To-Date
- 11.76 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C02F Class
- 0 % this patent is cited more than
- 1 Age
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