Process for preparing ion exchange resins by chloromethylation of crosslinked styrene copolymers in the presence of saturated hydrocarbon swelling agents
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United States of America Patent
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Jun 4, 1996
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N/A
app pub date -
Sep 28, 1994
filing date -
Sep 28, 1994
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Expired
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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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