Materials for the solid/liquid extraction of heavy metal ions, containing supported N-functionalized polyazacycloalkanes
US8975395B2 · kind B2 · utility
0Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2009 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | Sep 2, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B2200/11
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a material notably adapted for the extraction of metal cations in an aqueous medium, comprising a solid support on which are attached polyazacycloalkane compounds having a ring including at least 4 nitrogen atoms, and wherein the nitrogen atoms of the ring are substituted with coordinating groups, which each are independently: The invention also relates to methods for preparing the aforementioned materials and to different uses thereof, notably for the extraction of Pb2+ cations in an aqueous medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.