Patent ID: 7579402
Filing Date: 2009-08-25
Classification: A61L,Y10T

Abstract:
1. A coated superabsorbent polymer particulate comprising a) a superabsorbent polymer particulate comprising from about 55 to about 99.9 wt. % of polymerizable unsaturated acid group containing monomers; and from about 0.001 to about 5.0 wt % of internal crosslinking agent based on the polymerizable unsaturated acid group containing monomer; wherein the composition has a degree of neutralization of more than 25 mole %; and b) from about 0.5 to about 20 wt % of a coating containing salt selected from a group consisting of monovalent salts, divalent salts, trivalent salts and higher salts on the superabsorbent polymer particulate surface; wherein the coated superabsorbent polymer particulate has a water absorption property of absorbing about 3.6 grams or less of water per gram of superabsorbent polymer in about 15 seconds according to the Free Water Absorption 15 second (FWA