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US 2025/0010268 A1Published application
Superabsorbent polymer material comprising non-crosslinked polyacrylic acid polymer
AssigneeThe Procter & Gamble Company
InventorsArsen Arsenov SIMONYAN, Natasa DIJAKOV, Dimitris Ioannis COLLIAS, Yiping SUN
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Abstract
Absorbent articles having superabsorbent polymer material containing cross-linked polyacrylic acid and salts thereof are presented. The superabsorbent polymer material further comprising at least 3.0 weight-%, based on the total weight of the superabsorbent polymer material, of soluble polyacrylic acid polymers. A method for making such superabsorbent polymer materials is also disclosed.
Claims13
An absorbent article comprising:
- a liquid pervious topsheet,
- a liquid impervious backsheet, and
- an absorbent core disposed between the liquid pervious topsheet and the liquid impervious backsheet;
- wherein the absorbent core comprises a superabsorbent polymer material comprising cross-linked polyacrylic acid and salts thereof, the superabsorbent polymer material further comprising at least 3.0 weight-%, based on the total weight of the superabsorbent polymer material, of soluble polyacrylic acid polymers,
- wherein the cross-linked polyacrylic acid and salts thereof have an average distance Rx1 between neighboring crosslinks, as calculated for the superabsorbent polymer material loaded with 20 g of saline with 0.9% w NaCl per gram of dry superabsorbent polymer material, and
- wherein the at least 3.0 weight-% of soluble polyacrylic acid polymers have an average diameter of gyration of 2*Rg, and
- wherein the ratio of 2*Rg to Rx1 is at least 1.1.
4 more elements
Dependencies are inferred from the claim text.