Process for preparing ion exchange resins by chloromethylation o

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing

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521 27, 521 33, C08F 832, C08J 520

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active

055233279

ABSTRACT:
Ion exchange resins are prepared by a process comprising functionalizing styrene-divinylbenzene copolymers, or other crosslinked vinyl copolymers, by sulfonation or chloromethylation and amination, and achieving high ion exchange capacity and a low degree of resin bead fragmentation, in the presence of hydrocarbon liquids, such as cyclohexane.

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patent: 5081160 (1992-01-01), Strom et al.

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