Highly selective chelating resins and monomers for their preparation
US5444137A · kind A · utility
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15Claims
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Key dates
| Filing date | Jan 19, 1993 |
| Grant date | Aug 22, 1995 |
| Priority date | — |
| Expiry date | Jan 19, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Described are preferred monomers including a vinylbenzyl moiety N-bonded to an alkylaminopyridinyl or pyridylimidazolyl function. Also described are preferred acid salts of such monomers. Additionally, preferred processes involving and resins formed from these preferred monomers are described. The preferred resins are highly selective for valuable heavy metal ions such as copper and demonstrate superior iron rejection values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.