Anion exchanger
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United States of America Patent
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Nov 14, 1995
Issued Date -
N/A
app pub date -
Oct 4, 1994
filing date -
Dec 21, 1990
priority date (Note) -
Expired
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Abstract
An ion exchanger for chromatographic separation has the structure P--S--A, wherein P is an insoluble support, S is a spacer, and A is a functional ligand. According to the invention the functional ligand A comprises two positively charged atoms, each selected from nitrogen and sulphur, at a distance of two atoms from each other, with the proviso that A can not be 4-methyl-1,4-diazabicyclo[2.2.2]octan-1-yl, 1,4,4-trimethylpiperazinium-1-yl, 1,4-dimethyl-1,4-diazabicyclo[2.2.2]octan-2-yl or 1,1,4,4,4-pentamethyl-1,4-diazabutan-1-yl.
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