Patent ID: 7179851

Claim:
A superabsorbent material, comprising: a superabsorbent material treated with a coating including a hydrophilic soft polymer crosslinked with an acrylate or methacrylate ester having an alkoxysilane functionality to resist damage when subjected to an Absorbent Product Processing Simulation Test; wherein the treated superabsorbent material has a centrifuge retention capacity of about 15 grams or greater of 0.9 weight percent sodium chloride aqueous solution per gram of the treated superabsorbent material and a gel bed permeability (GBP) at a 0 psi swell pressure on pre-screened 300–600 micron particles of about 200 (×10 −9 cm 2 ) or greater prior to subjecting the treated superabsorbent material to the Absorbent Product Processing Simulation Test; and subsequent to subjecting the treated superabsorbent material to the Absorbent Product Processing Simulation Test the treated superabsorbent material exhibits at least one property selected from the group consisting of: (1) a reduction in GBP value at a 0 psi swell pressure on pre-screened particles of about 20% or less; (2) a reduction in GBP value at a 0.3 psi swell pressure on pre-screened particles of about 50% or less; (3) a reduction in GBP value at a 0 psi swell pressure on un-screened particles of about 50% or less; (4) a reduction in GBP value at a 0.3 psi swell pressure on un-screened particles of about 60% or less; and (5) an average particle size reduction of about 20% or less.