Process for preparing gel-type cation exchangers
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United States of America Patent
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Jun 15, 2004
Grant Date -
Jan 8, 2004
app pub date -
Jul 8, 2002
filing date -
Jul 8, 2002
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Expired
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Abstract
The invention relates to a process for preparing gel-type cation exchangers of high stability by sulfonation of crosslinked (meth)acrylic ester-containing bead polymers with sulfuric acid having a concentration of 90 to 95% in the absence of a swelling agent.
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