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AssigneeThe Procter & Gamble Company
InventorStephen Allen Goldman
Estimating the term…
Disclosed are compositions comprising at least one cationic ion-exchange hydrogel-forming polymer and at least one anionic ion-exchange hydrogel-forming polymer, wherein the composition exhibits improved absorbency characteristics relative to comparable mixtures of the hydrogel-forming polymers in their neutralized state. Also disclosed are mixed-bed ion-exhange compositions having improved Performance Under Pressure values relative to prior mixed-bed compositions, which alleviate detrimental gel blocking incurred with these prior systems. Also disclosed are absorbent members useful in the containment of body fluids such as urine, that have at least one region comprising a mixed-bed ion-exchange hydrogel-forming absorbent polymer composition in a concentration of from about 60 to 100% by weight.
A mixed-bed ion-exchange composition comprising one or more cationic ion-exchange hydrogel-forming polymers and one or more anionic ion-exchange hydrogel-forming polymers, wherein the mixed-bed ion-exchange composition exhibits increased absorbence of an urine electrolyte solution under PUP-absorption conditions relative to a comparable mixture of the constituent cationic and anionic hydrogel-forming polymers in their neutralized forms.
An absorbent member for the containment of aqueous body fluids having at least one region comprising a mixed-bed ion-exchange composition comprising one or more cationic ion-exchange hydrogel-forming polymers and one or more anionic ion-exchange hydrogel-forming polymers in a concentration of from about 60% to 100% by weight, wherein the composition exhibits increased absorbence of an urine electrolyte solution under PUP-absorption conditions relative to a comparable mixture of the constituent cationic and anionic hydrogel-forming polymers in their neutralized forms.
A mixed-bed ion-exchange composition comprising one or more cationic ion-exchange hydrogel-forming polymers and one or more anionic ion-exchange hydrogel-forming polymers, wherein the composition has a PUP capacity at 225 minutes of at least about 25 g/g under a confining pressure of 0.7 psi.
A mixed-bed ion-exchange composition comprising one or more cationic ion-exchange hydrogel-forming polymers and one or more anionic ion-exchange hydrogel-forming polymers, wherein the composition has a PUP capacity at 60 minutes of at least about 25 g/g under a confining pressure of 0.7 psi.
A mixed-bed ion-exchange composition comprising one or more cationic ion-exchange hydrogel-forming polymers and one or more anionic ion-exchange hydrogel-forming polymers, wherein the composition has a PUP capacity at 225 minutes of at least about 20 g/g under a confining pressure of 1.4 psi.
Dependencies are inferred from the claim text.