METHOD FOR PREPARING SUPER ABSORBENT RESIN

摘要

The present invention relates to a method for preparing a super absorbent resin. The method for preparing a super absorbent resin according to the present invention comprises the steps of: forming a hydrous gel phase polymer by performing thermal polymerization or photo-polymerization on a monomer composition containing a water-soluble ethylene-based unsaturated monomer and a polymerization initiator; drying the hydrous gel phase polymer; pulverizing the dried polymer; mixing the pulverized polymer with a surface cross-linker and core-shell structured polymer particles; and performing a surface cross-linking reaction. According to the present invention, the polymer particles are added at the time of surface cross-linking, thereby obtaining a super absorbent resin having improved permeability.