Chelate, crosslinked polyethyleneimine resin having 2-hydroxy benzoyl group
US4678844A · kind A · utility
22Cited by
3References
5Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Feb 24, 1986 |
| Grant date | Jul 7, 1987 |
| Priority date | — |
| Expiry date | Feb 24, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2101/006
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A novel chelate resin is produced by causing a 2-hydroxybenzoic acid derivative to react upon a high molecular compound, i.e. a cross-linked polyethyleneimine or a cross-linked polyethyleneimine derivative, thereby linking a 2-hydroxybenzoyl group to the nitrogen atom in the imine chain of the high molecular compound. This chelate resin is capable of collecting, by adsorption and at high efficiency, such a metal as uranium dissolved in a trace amount in water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.