CHROMATOGRAPHIC MATERIAL AND METHODS FOR THE SYNTHESIS THEREOF
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United States of America Patent
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Aug 13, 2015
app pub date -
Feb 7, 2014
filing date -
Feb 7, 2014
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Abstract
A particulate material for chromatographic use comprising silica particles is provided having a skeleton structure containing silsesquioxane cage moieties. The material is useful as a chromatographic material, for example in HPLC. The silica particles may be hybrid organo-silica particles wherein the silsesquioxane moieties comprise a cage structure having silicon atoms positioned at corners of the cage wherein one or more silicon atoms positioned at the corners of the cage carry an organic group. A preferred method of preparing the particulate material comprises hydrolysing a silsesquioxane as a co-component of a hydrolysis mixture, especially in a Stöber or modified Stöber process.
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