Method for preparation of strong acid cation exchange resins
This invention relates to an improved process for the preparation of strong acid cation exchange resins using wet copolymer and non-solvent sulfonation conditions. An improved process for preparing strong acid cation exchange resins by sulfonation of wet crosslinked copolymer in the absence of organ...
Gespeichert in:
| Hauptverfasser: | , |
|---|---|
| Format: | Patent |
| Sprache: | eng |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | This invention relates to an improved process for the preparation of strong acid cation exchange resins using wet copolymer and non-solvent sulfonation conditions.
An improved process for preparing strong acid cation exchange resins by sulfonation of wet crosslinked copolymer in the absence of organic swelling solvents is disclosed. This process involves dewatering a crosslinked poly(vinylaromatic) copolymer to selected residual moisture levels of 3 to 35%, followed by non-solvent sulfonation, to provide strong acid cation exchange resins having enhanced physical stability and that are free of chlorinated-solvent contaminants. |
|---|