| 摘要 |
PURPOSE:To obtain the packing material which can be easily produced and has high separability by modifying the surface of a porous carrier with a hydrophobic group and a hydrophilic group. CONSTITUTION:The particularly adequate porous carrier is obtd. by subjecting a silicon compd. having Si-H groups to surface polymn. to a silica gel of a spherical of crushed type having fine pores of about 60 to 80Angstrom and about 400 to 600m<2>/g specific surface area, then bringing the hydrocarbon having a vinyl group in the molecule into reaction with the remaining Si-H groups and coating the entire surface with the hydrophobic silicon compd. partially having alkyl groups. Lewis acid is then acted on this carrier and the alkyl groups in a part of the surface of the powder and particularly the outside surface are cut to impart the hydrophobic property to the surface. The column packing material obtd. in such a manner is made into a resin capsule type consisting of the silicone resin uniformly coating the carrier and hardly receives the influence of the polar properties possessed by the individual powder particles. Since at least a part of the outside surfaces of the packing material are hydrophilic and do not adsorp protein, etc., the packing material is stable and has the excellent separability. |
