Composite polyamide membrane derived from monomer including amine-reactive and phosphorous-containing functional groups
US9399196B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Jul 17, 2012 |
| Grant date | Jul 26, 2016 |
| Priority date | — |
| Expiry date | Dec 25, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D69/1251
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for making a composite polyamide membrane comprising the steps of applying a polyfunctional amine monomer and polyfunctional acyl halide monomer to a surface of the porous support and interfacially polymerizing the monomers to form a thin film polyamide layer, wherein the method is includes at least one of the following steps: i) conducting the interfacial polymerization in the presence of a monomer comprising at least one phosphorous-containing functional group or salt thereof and an at least one amine-reactive functional group; and/or ii) applying such a monomer to the thin film polyamide layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.