Packing material and process for its production

Details Packing material and process for its production Packing material and process for its production

B - Operations, Transporting

01

J

402/21

B01J 20/32 (2006.01)

Patent

CA 1293083

ABSTRACT A packing material for chromatography comprising a carrier having silanol groups on its surface, wherein Si in the silanol groups forms a Si-O-Si bond together with Si in a silyl group of the following formula I and Si in a silyl group of the following formula II, and the molar ratio of the silyl group of the formula II is from 0 to 2/3 based on the total amount of silyl groups: Image (I) wherein each of R1 and R2 is a hydroxyl group, a methyl group, an ethyl group, an alkoxy group having from 1 to 3 carbon atoms, a phenoxy group, an acetoxy group, a trimethylsiloxy group, a triethylsiloxy group or an oxygen atom bonded to Si in a silanol group on the surface of the carrier, R3 is a 3-carbonyloxypropyl group, a 1-phenyleneethyl group or a 2-phenyleneethyl group, R4 is a hydrogen atom or a methyl group, and each of m and n is an integer of at least 1; and Image (II) wherein each of R1 and R2 is a hydroxyl group, a methyl group, an ethyl group, an alkoxy group having from 1 to 3 carbon atoms, a phenoxy group, an acetoxy group, a trimethylsiloxy group, a triethylsiloxy group or an oxygen atom bonded to Si in a silanol group on the surface of the carrier, R5 is a methyl group, an ethyl group or a 3-glyceryloxypropyl group.

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