PROCESS FOR PRODUCING A POLYMER MICROGEL BY PRECITATION POLYMERIZATION

摘要

preparing first crosslinked polymer by crosslinking monovinyl monomer and divinyl monomer in the presence of hydrophilic or hydrophobic solvent; preparing second crosslinked polymer by add-mixing monovinyl monomer and divinyl monomer into the 1st crosslinked polymer and crosslinking by the inner-molecular precipitation polymerization to form microgel; dissolution separating the microgel in the 2nd crosslinked polymer by ultrasonic decomposition or solvent-extraction.