| abstract |
The present invention relates to a superabsorbent resin exhibiting superior absorption ability under normal pressure, liquid permeability and the like while maintaining excellent absorption performance and absorption speed, and a method for producing the same. Wherein the superabsorbent resin comprises: a base resin powder comprising a first crosslinked polymer of a water-soluble ethylenically unsaturated monomer having at least partially neutralized acidic groups; And a surface cross-linked layer formed on the base resin powder, wherein the first cross-linked polymer comprises a second cross-linked polymer that is additionally cross-linked through a surface cross-linking agent, wherein the surface cross-linking agent has a solubility constant SP value σ) of 12.5 (cal / cm 3 ) 1/2 or more, wherein at least one of the surface cross-linking agents is an alkylene carbonate compound and the remainder is an alkylene carbonate compound and a polyhydric alcohol Based compound, and has a certain range of transmittance. |