Patent ID: 7329386
Filing Date: 2008-02-12
Classification: B01J,Y10T

Abstract:
1. A column packing material comprising: a silica gel having at least a silanol group which is bound to a first chemical modification group; a silicone polymer consisting of 1,3,5,7-tetramethylcyclotetrasiloxane monomers having at least 2 or more hydrosilyl groups; wherein a trimethylsilyl group is bound to said silanol group converted from said residual hydrosilyl group of said silicone polymer and/or a silanol group on said silica gel which is not bound to said first chemical modification group; and wherein said first chemical modification group is a straight chain alkyl group having 1 to 30 carbon atoms, a branched hydrocarbon group, a cyclic hydrocarbon group, or a substituted hydrocarbon group wherein one or more of hydrogen atoms are substituted by a cyano group, a hydroxyl group, a carboxyl group, an acid amide group, an imide group, a sulfonyl group, an amino group or a glyceroyl group.