Selective ion exchange resins with pyridyl-imidazolyl chelating functional groups
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United States of America Patent
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May 13, 1980
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N/A
app pub date -
Sep 7, 1978
filing date -
Sep 7, 1977
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Expired
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Abstract
An ion exchange resin having functional groups of the formula :-##STR1## wherein :- A and B, independently of each other, represent groups forming together with the attached carbon and nitrogen atoms, an optionally substituted five or six membered heterocyclic ring which may embody a further heteroatom and wherein at least one of such heterocyclic rings is an aromatic ring; R* may be totally absent or it may represent an optionally substituted alkyl radical and Z represents a resin to which the functional groups are attached.
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