Selective ion exchange resins with pyridyl-imidazolyl chelating functional groups
US4202944A · kind A · utility
7Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 1978 |
| Grant date | May 13, 1980 |
| Priority date | — |
| Expiry date | Sep 7, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An ion exchange resin having functional groups of the formula :- ##STR1## wherein :- A and B, independently of each other, represent groups forming together with the attached carbon and nitrogen atoms, an optionally substituted five or six membered heterocyclic ring which may embody a further heteroatom and wherein at least one of such heterocyclic rings is an aromatic ring; R* may be totally absent or it may represent an optionally substituted alkyl radical and Z represents a resin to which the functional groups are attached.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.