Process for the preparation of high density ion exchange resins and ion exchange resins thus obtained
US4381350A · kind A · utility
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2References
8Claims
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Key dates
| Filing date | Nov 26, 1979 |
| Grant date | Apr 26, 1983 |
| Priority date | — |
| Expiry date | Nov 26, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/22
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for obtaining a dense ion-exchange anionic resin and the product so obtained. The resin is of the type based on a co-polymer of styrene and divinylbenzene. The process involves a liquid phase treatment comprising contacting the resin with bromide in a liquid phase and simultaneously charging the liquid phase with gaseous chlorine while in contact with the resin for reaction to provide a styrene divinylbenzene copolymer ion-exchange anionic resin containing bromine and chlorine groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.