Absorbent polymer compositions having high sorption capacities under an applied pressure and improved integrity when wet
AssigneeThe Procter & Gamble Company
InventorsArman Ashraf, Bryn Hird
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Abstract
Disclosed in the present application are absorbent materials useful in the containment of body fluids such as urine. In particular, the invention relates to absorbent polymer compositions having excellent absorbency performance properties in terms of absorbent capacity under a confining pressure of 0.7 psi, as well has excellent integrity in the swollen state. The invention further relates to absorbent members comprising these absorbent polymer compositions, and to absorbent articles comprising the absorbent members.
Claims41
An absorbent polymer composition, said polymer composition consisting essentially of absorbent polymers, each of said polymers being capable of absorbing at least 10 times its weight in deionized water, allowing for adjustment of the pH of the system, wherein said polymer composition has a Performance Under Pressure (PUP) capacity in synthetic urine solution of at least about 39 g/g under a confining pressure of 0.7 psi after 4 hours, and a Ball Burst Strength (BBS) value of at least about 50 gf.
An absorbent polymer composition, said polymer composition consisting essentially of absorbent polymers, each of said polymers being capable of absorbing at least 10 times its weight in deionized water, allowing for adjustment of the pH of the system, wherein said polymer composition has a PUP capacity in synthetic urine solution of at least about 36 g/g under a confining pressure of 0.7 psi after 4 hours, and a BBS value of at least about 100 gf.
An absorbent polymer composition, said polymer composition consisting essentially of absorbent polymers, each of said polymers being capable of absorbing at least 10 times its weight in deionized water, allowing for adjustment of the pH of the system, wherein said polymer composition has a PUP capacity in synthetic urine solution of at least about 33 g/g under a confining pressure of 0.7 psi after 4 hours, and a BBS value of at least about 150 gf.
An absorbent polymer composition, said polymer composition consisting essentially of absorbent polymers, each of said polymers being capable of absorbing at least 10 times its weight in deionized water, allowing for adjustment of the pH of the system, wherein said polymer composition has a PUP capacity in synthetic urine solution of at least about 30 g/g under a confining pressure of 0.7 psi after 4 hours, and a BBS value of at least about 200 gf.
Dependencies are inferred from the claim text.