| abstract |
SUPERABSORBENT POLYMER AND METHODn OF PREPARATION OF THE SAME.nThe present description relates to a superabsorbent polymer and a methodn of preparation of the same, which not only has an excellent performance ofnbasic absorption, but also exhibits an improved absorption rate, andnsimilar. The superabsorbent polymer includes a base resin powderncontaining a first cross-linked polymer of an unsaturated monomer tonwater-soluble ethylene base having at least acidic groupsnpartially neutralized; and a surface reticulated layerncontaining a second cross-linked polymer wherein the first polymerncrosslinked is further crosslinked by a crosslinking agent ofnsurface in the base resin powder, where the superabsorbent polymerncontains less than 9.9% per number of polymer particlesnsuperabsorbents having an aspect ratio, which is defined as the smallestn diameter / the largest diameter of each polymer particlensuperabsorbent, less than 0.5, a vortex time is from 5 to 55nseconds by a vortex method, and a surface tension is 50 ton80 mN/m. |