Ion exchange material prepared from partially pyrolyzed macroporous polymer particles
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United States of America Patent
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May 5, 1981
Grant Date -
N/A
app pub date -
Dec 26, 1979
filing date -
Dec 26, 1979
priority date (Note) -
Expired
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Abstract
Macroporous styrene polymer particles which have been partially pyrolyzed at temperatures between 300.degree. and 800.degree. C. to form non-functionalized, carbonaceous adsorbents, are functionalized according to this invention to produce weak base, strong base, weak acid or strong acid, dense ion exchange particles, or precursors thereof, using such reactions as halogenation, sulfonation, chloromethylation, chlorosulfonation and oxidation, alone or followed by aminolysis or other conventional functionalization reactions.
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