Patent ID: 7579402

Claim:
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 15sec ) Test, and wherein when the coating of (b) is washed off the superabsorbent polymer particulate of (a), the resulting superabsorbent polymer particulate has a water absorption property of absorbing from about 5.7 grams to about 7.2 grams of water per gram of superabsorbent polymer in about 15 seconds according to the Free Water Absorption 15 second (FWA 15sec ) Test.