Patent ID: 8269060
Filing Date: 2012-09-18
Classification: A61L,Y10S

Abstract:
1. An absorbent material consisting essentially of a superabsorbent polymer consisting of a) at least about 75% by weight of the superabsorbent polymer of an anionic polymer comprising functional groups selected from carboxyl groups, sulfonate groups, sulphate groups, sulfite groups, and phosphate groups; and b) an internal crosslinking agent based on the polymerizable unsaturated acid group containing monomer, wherein the superabsorbent polymer has a degree of neutralization of greater than about 25%; wherein elements a) and b) are polymerized and prepared into superabsorbent polymer particles and further comprising the following surface additives to form surface treated superabsorbent polymer particles said absorbent material having a centrifuge retention capacity as determined by a Centrifuge Retention Capacity Test of at least about 20 g/g and a gel bed permeability under load as determined by a Gel Bed Permeability Under Load Test of at least about 300×10 −9 cm 2 .