Method for making anion exchange and chelant resins including aliphatic amino functional groups
US9486798B2 · kind B2 · utility
0Cited by
9References
7Claims
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Key dates
| Filing date | Jun 9, 2014 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | Jun 9, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for making an anion exchange or chelant resin comprising a vinyl aromatic polymer including a repeating unit comprising an aromatic ring substituted with an aliphatic amino group, wherein the method comprises the step of reacting a vinyl aromatic polymer with a nitro compound comprising from 1 to 12 carbon atoms with the proviso that the α carbon includes at least one hydrogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.