Water-treatment separating membrane of high flux having good chlorine resistance
US9259691B2 · kind B2 · utility
1Cited by
11References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 29, 2014 |
| Grant date | Feb 16, 2016 |
| Priority date | — |
| Expiry date | Apr 29, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2103/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A water-treatment separating membrane includes a polyamide active layer formed on a porous support. When the polyamide active layer is dyed using a 5% aqueous solution of Rhodamine B, at least a curve pattern formed by connecting two or more arcs is formed in at least a partial area of the polyamide active layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.