Selective bonded phase materials for HPLC separations and method

Details Selective bonded phase materials for HPLC separations and method Selective bonded phase materials for HPLC separations and method

1997-11-05

1999-07-13

Nakarani, D. S.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

4283073, 428405, 428447, 428448, 502401, 502405, 502407, B01J 2022

Patent

active

059224495

ABSTRACT:
A bonded phase material useful with a chromatographic separation process. The bonded phase material includes a hydroxyl bearing porous material, a first controlled stoichiometric amount of a first interactive silane covalently bonded to the surface of the hydroxyl bearing porous material and at least one additional interactive silane covalently bonded to the surface of the hydroxyl bearing porous material to provide the porous material with a gradient of functionality of varied polarity creates a unique overall polarity which is not obtainable by the separate interactive silanes themselves. The method of silating the porous material includes sequential application of controlled stoichiometric amounts of the interactive silanes.

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