Composite polyamide membrane
US9073015B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 2013 |
| Grant date | Jul 7, 2015 |
| Priority date | — |
| Expiry date | Jan 3, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2323/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for making a composite polyamide membrane including 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 subject monomer comprising at least one carboxylic acid group linked to an aromatic moiety and wherein the aromatic moiety is further substituted with at least one of an acyl halide or anhydride functional group and ii) applying the subject monomer to the thin film polyamide layer. The invention includes many additional embodiments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.