Composite polyamide membrane derived from carboxylic acid containing acyl halide monomer
US9289729B2 · kind B2 · utility
2Cited by
70References
14Claims
0Family size
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Key dates
| Filing date | Mar 16, 2013 |
| Grant date | Mar 22, 2016 |
| Priority date | — |
| Expiry date | Jul 2, 2034 |
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 step of applying polyfunctional amine and acid halide monomers to a surface of a porous support and interfacially polymerizing the monomers to form a thin film polyamide layer. The method further includes the step of conducting the interfacial polymerization in the presence of: a carboxylic acid monomer comprising an aliphatic or aromatic moiety substituted with single carboxylic acid functional group and at least one acyl halide functional group, and a tri-hydrocarbyl compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.