Patent ID: 9624328
Date: 2017-04-18
CPC Classifications: A61L,B01J,C08F,C08J,C08L

Claim:
1. A superabsorbent polymer, of which centrifuge retention capacity (CRC) for a physiological saline solution is 28 g/g or more, absorbency under pressure (AUP) of 0.7 psi for the physiological saline solution is 22 g/g or more, liquid permeability (SFC) is 25×10 −7 cm 3 *sec/g or more, and gel strength is 7500 to 10,800 Pa, wherein the superabsorbent polymer includes a powdery base polymer comprising a crosslinked polymer prepared by polymerizing water-soluble ethylene-based unsaturated monomers having acidic groups which are at least partially neutralized; and a surface crosslinking layer comprising a surface crosslinked polymer prepared by further crosslinking the crosslinked polymer of the powdery base polymer which is formed on the powdery base polymer.