Polar silanes and their use on silica supports

Details Polar silanes and their use on silica supports Polar silanes and their use on silica supports

2005-09-27

2005-09-27

Therkorn, Ernest G. (Department: 1723)

Liquid purification or separation

With means to add treating material

Chromatography

C210S502100, C210S635000, C210S656000, C556S410000, C556S463000, C556S465000

Reexamination Certificate

active

06949186

ABSTRACT:
A modified silica support having a polar phase bound to its surface and suitable for use for chromatographic separations, having the following formula:wherein, m=0-20; n=0-20; p=1-50; X is sulfonyl, carbonyl, carbamoyl, or oxycarbonyl; R1=H, alkyl, substituted alkyl, aryl or substituted aryl groups; R2=alkyl, substituted alkyl, aryl or substituted aryl groups; and R3and R4are alkyl, aryl, hydroxyl, or alkoxyl groups or groups including oxygen atoms cross-linked to silicon atoms. Also, a polar silane intermediate to make this support.

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