Chromatographic packing material comprising extended area metal oxide/hydroxide particles with a layer of a phosphorus-containing material thereon
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United States of America Patent
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Aug 6, 1991
Issued Date -
N/A
app pub date -
Oct 31, 1988
filing date -
Mar 9, 1987
priority date (Note) -
Expired
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Abstract
A chromatographic packing material is disclosed which comprises generally spherical metal oxide/hydroxide support particles comprising crystals extending radially outward from a central core region and having a shape selected from principally acicular to principally lamellar and having bonded to the surface of said metal oxide/hydroxide support particles a layer of one or more phosphorus-containing organic materials comprised of a phosphorus-containing acid group bonded to said metal oxide/hydroxide particles and an unreacted carbon-containing acid group.
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