Fluid-absorbent article
AssigneeBASF SE
InventorsRumyana Panayotova, Ming Vang, Kathleen Goebel, Xiaomin Zhang, Michael Mitchell
Life of this patent
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Abstract
A fluid-absorbent article having an upper liquid-pervious layer, a lower liquid-impervious layer, a fluid-absorbent core between the layer and the layer, containing from 0 to 20% by weight fibrous material and from 80 to 100% by weight of a water-absorbent polymer material, based on the sum of water-absorbent polymer material and fibrous material. The fluid absorbent article has a first intake time of 15 seconds or less by the hanging U-shape test (HUS).
Claims14
A fluid-absorbent article, comprising
- (A) an upper liquid-pervious layer (89),
- (B) a lower liquid-impervious layer (83),
- (C) a fluid-absorbent core (80) between the layer (89) and the layer (83), comprising at least one layer (91), comprising from
- 0 to 20% by weight fibrous material and from 80 to 100% by weight a water-absorbent polymer material, based on the sum of water-absorbent polymer material and fibrous material;
- wherein the fluid absorbent article has a first intake time of 15 seconds or less by the hanging U-shape test (HUS);
- wherein the water-absorbent polymer material is a blend of at least two water-absorbent polymer materials comprising 20 to 100 wt.-% of a fast superabsorbent and 0 to 80 wt.-% of a second water-absorbent polymer material;
- and
- wherein the fast superabsorbent has a surface area of at least 1000 cm2/q measured by BET.
A fluid absorbent core (80), comprising at least one layer (91), comprising from 0 to 20% by weight fibrous material and from 80 to 100% by weight a water-absorbent polymer material, based on the sum of water-absorbent polymer material and fibrous material, wherein the at least one layer (91) comprises a blend of at least 20 to 100 wt.-% of a fast superabsorbent and 0 to 80 wt-% of a second water-absorbent polymer material;
- and
- wherein the fast superabsorbent has a surface area of at least 1000 cm2/g measured by BET;
- and
- wherein the fluid absorbent core has a first intake time of 15 seconds or less by the hanging U-shape test (HUS).
Dependencies are inferred from the claim text.