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Absorbent Materials And Absorbent Articles Incorporating Such Absorbent Materials

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By: Karen McIntyre

Editor, Nonwovens Industry

Patented recently is an absorbent material formed at least in part of a cross-linked polymer. The absorbent material has 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.times.10.sup.-9 cm.sup.2 or a free swell gel bed permeability as determined by a Free Swell Gel Bed Permeability Test of at least about 2,500.times.10.sup.-9 cm.sup.2. The cross-linked polymer may comprise either at least about 75 weight percent anionic polymer or at least about 75 weight percent cationic polymer. In one embodiment, the cross-linked polymer is surface treated with a water soluble non-cross-linked polymer having a potential for becoming charged opposite that of the cross-linked polymer.

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