Preparation of anion exchange resins by bromination of vinyl aromatic polymers
US4327191A · kind A · utility
18Cited by
3References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 18, 1980 |
| Grant date | Apr 27, 1982 |
| Priority date | — |
| Expiry date | Aug 18, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/44
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Process for preparing anion exchange resins comprising polymerizing a vinyl aromatic compound having at least one alkyl group containing about 1 to 3 carbon atoms, alone or mixed with a copolymerizable monomer, optionally in the presence of a mineral support, followed by brominating the alkyl groups of the resulting polymer by means of an N-bromoamide or an N-bromoimide, and then aminating the brominated product obtained. The resulting anion exchange resins are useful in the chemical, pharamaceutical, food, and metallurgical industries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.