COLUMN PACKING AND PROCESS FOR PRODUCTION THEREOF

摘要

A column packing comprising silica gel having silanol groups,the first chemical modifying groups bonded to the silanol groups,a silicone polymer covering the surface of the silica gel,and trimethylsilyl groups bonded to the silanol groups on the silicone polymer and/or the silica gel;and a process for the production of a column packing which comprises the following steps(A)to(C):(A)the step of reacting silica gel with a silane coupling agent having the first chemical modifying group to thereby introduce the first chemical modifying groups to the silanol groups on the surface of the silica gel,(B)the step of polymerizing one or more silicone compounds on the surface of the resulting silica gel to form a silicone polymer film on the surface thereof,and(C)the step of trimethylsilylating the silanol groups on the silicone polymer and/or the silica gel with an end−capping agent.