Polyamide reverse osmosis composite membrane and preparation method thereof
US7766173B2 · kind B2 · utility
2Cited by
8References
9Claims
0Family size
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Key dates
| Filing date | Aug 24, 2005 |
| Grant date | Aug 3, 2010 |
| Priority date | — |
| Expiry date | Aug 24, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2323/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An amine aqueous solution for forming an active layer of a polyamide reverse osmosis composite membrane is prepared, which consists of 0.1 through 20 weight % of polyfunctional aromatic amine monomer, 0.1 through 20 weight % of multi-functional tertiary alcohol amine, 0.1 through 20 weight % of strong acid, and 40 through 99.7 weight % of water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.