Chlorine resistant polyamides and membranes made from the same
US7806275B2 · kind B2 · utility
24Cited by
33References
20Claims
0Family size
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Key dates
| Filing date | May 9, 2007 |
| Grant date | Oct 5, 2010 |
| Priority date | — |
| Expiry date | Feb 7, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A20/131
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A chlorine resistant polyamide is formed from the reaction product of an amine and an acid chloride monomer wherein the acid chloride monomer is modified with electron-withdrawing groups that exhibit sufficient activity to (i) minimize any chlorination on both the amine and acid chloride side and (ii) minimize N-chlorination. A membrane is made from the polyamide and, in one application, the membrane is used in a desalination unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.