Nanofiltration membrane with high flux for selectively removing hydrophobic endocrine disrupting chemicals and preparation method thereof
US11623182B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 22, 2020 |
| Grant date | Apr 11, 2023 |
| Priority date | — |
| Expiry date | May 21, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2101/345
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A nanofiltration membrane with a high flux for selectively removing hydrophobic endocrine disrupting chemicals and a preparation method thereof are provided. The method includes the following steps: immersing a porous support layer into a first solution, removing excess droplets from a surface of the support layer after taking the support layer out of the first solution, and then immersing the support layer attached with the first solution into a second solution for an interfacial polymerization reaction, followed by washing after completion of the reaction to obtain the subject nanofiltration membrane. The first solution is an aqueous solution containing a polyamine monomer and an acid binding agent, and the second solution is an organic solution containing an acid chloride monomer and a metal-organic framework.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.