An absorbent article comprising an absorbent member positioned between a topsheet and a backsheet is provided. The absorbent member contains at least one layer that comprises superabsorbent particles containing nanopores having an average cross-sectional dimension of from about 10 to about 500 nanometers.

An absorbent article comprising an absorbent member positioned between a topsheet and a backsheet is provided. The absorbent member contains at least one layer that comprises porous superabsorbent particles, wherein the particles exhibit a relative humidity microclimate of about 67% or less after being exposed to an atmosphere having a temperature of about 23 C. and relative humidity of 80% for a time period of 20 minutes.

A feminine care absorbent article comprising an absorbent member positioned between a topsheet and a baffle is provided. The absorbent member contains at least one layer that comprises superabsorbent particles containing nanopores having an average cross-sectional dimension of from about 10 to about 500 nanometers.

A method for making a disposable absorbent core comprises depositing absorbent particulate polymer material from a plurality of reservoirs in a printing roll onto a substrate disposed on a grid of a support which includes a plurality of cross bars extending substantially parallel to and spaced from one another so as to form channels extending between the plurality of cross bars. The plurality of reservoirs in the first peripheral surface are arranged in an array comprising rows extending substantially parallel to and spaced from one another. A disposable absorbent article and apparatus for making an absorbent article are also disclosed.

A feminine care absorbent article comprising an absorbent member positioned between a topsheet and a baffle is provided. The absorbent member contains at least one layer that comprises superabsorbent particles containing nanopores having an average cross-sectional dimension of from about 10 to about 500 nanometers.

An absorbent article comprising an absorbent member positioned between a topsheet and a backsheet is provided. The absorbent member contains at least one layer that comprises porous superabsorbent particles, wherein the particles exhibit a relative humidity microclimate of about 67% or less after being exposed to an atmosphere having a temperature of about 23? C. and relative humidity of 80% for a time period of 20 minutes.

The present disclosure invention relates to a disposable absorbent article (100) comprising a liquid-pervious topsheet (10), a liquid-impervious backsheet (20) and an absorbent assembly (30) between the topsheet (10) and the backsheet (20). The absorbent assembly (30) comprises an absorbent core (40), an upper core wrap (50) and a lower core wrap (60). The absorbent core (40) comprises at least two cavities (70) free of absorbent material wherein the upper core wrap (50) and the lower core wrap (60) are permanently attached to each other, said cavities (70) being interconnected via at least one connecting line (80) comprising absorbent material. The absorbent core (40) has a first basis weight in the zone out of the cavities (70) and the connecting lines (80) and a second basis weight in the connecting lines (80), the first basis weight being greater than the second basis weight. in the cavities (70). The resulting absorbent assembly (30) may show all together a very good integrity, a very good distribution of fluids and a quick rate of absorption.

An absorbent pad includes a batt of cellulose fibers, superabsorbent particles intermixed within the batt of cellulose fibers, and an odor control material intermixed within the batt of cellulose fibers, wherein the odor control material is a particulate material including one or more fatty acid. The odor control material preferably further includes selected inorganic compounds, such as sources of nitrogen, phosphorus and iron. Various embodiments incorporate the absorbent pad in a diaper or other disposable hygiene product.

An absorbent member (20) includes an absorbent sheet (10) in which absorbent polymer (12) is fixed to a base sheet (11) and a cover sheet (21) covering at least a first surface of the absorbent sheet (10). The absorbent sheet (10) has an absorbent polymer fixing proportion of 40% or more. The absorbent member (20) has high fixing performance of the absorbent polymer (12) to the base sheet (11) and is less likely to suffer from detachment of the absorbent polymer (12) even after liquid absorption. The absorbent polymer (12) is preferably fixed to the base sheet (11) with a base sheet fixing adhesive (13) interposed therebetween. The adhesive (13) is preferably an acrylic, silicone-based or rubber-based adhesive, and is preferably a hot-melt adhesive.

Catalysts for dehydrating hydroxypropionic acid, hydroxypropionic acid derivatives, or mixtures thereof to acrylic acid, acrylic acid derivatives, or mixtures thereof with high yield and selectivity, short residence time, and without significant conversion to undesired side products, such as, for example, acetaldehyde, propionic acid, and acetic acid, are provided. The catalysts are mixed protonated monophosphates. Methods of preparing the catalysts are also provided.