| 摘要 |
PURPOSE:To improve mechanical strength by subjecting a mixture composed essentially of vinyl acetate, etc. and crosslinkable monomer to an aq. suspension polumn, in a diluent such as epichlorohydrin or the like, hydrophiling an epoxy group and removing the same from the formed polymer particles. CONSTITUTION:A mixture composed essentially of vinyl acetate, etc. and a crosslinkable monomer such as divinyl benzene or the like is subjected to an aq. suspension polymn. in the presence of a diluent such as epichlorohydrin or the like. The epoxy group in the diluent is subjected to ring opening and hydrophiling and is removed from the polymer particles by washing or the like. Since the packing material has excellent compatibility with the diluent and monomer as well as the formed polymer, uniform pore diameters are formed in the formed polymer particles and the porous particles are obtd. without spoiling mechanical strength. The packing material for LC having finally the excellent separating power is thus industrially advantageously produced. |
