Bonded organo-pellicular packings for chromatographic columns

Details Bonded organo-pellicular packings for chromatographic columns Bonded organo-pellicular packings for chromatographic columns

B - Operations, Transporting

01

J

183/19, 252/23

B01J 20/32 (2006.01) B01D 15/08 (2006.01)

Patent

CA 1123413

ABSTRACT Highly effective chromatographic column packings are prepared by reacting hydroxyl groups on a silica surface with SiC14 and then reacting the chloros?lylaced surface with a polyglycol or polymeric glycol ester in 3 slurry reaction. Residual chlorosilane groups on the reacted surface are neutralized by reaction with methanol or other lower alkanol. The resulting modified silica has a bonded, essentially monomolecular organic surface film which provides thermal stability, uniform efficiency, and rapid analysis when the material is used as a column packing in gas-liquid chromatography.

320419

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