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AssigneeThe Procter & Gamble Company
InventorsThomas A. DesMarais, Keith J. Stone, Hugh A. Thompson, Gerald A. Young, Gary D. LaVon, John C. Dyer
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Disclosed are absorbent foam materials suitable for use as or in the absorbent cores of absorbent articles, such as diapers which absorb and retain aqueous body fluids. Such foam materials comprise hydrophilic, flexible open-celled structures which are preferably prepared by polymerizing high internal phase (HIPE) water-in-oil emulsions. Such foam materials have a pore volume of from about 12 to 100 mL/g, and a capillary suction specific surface area of from about 0.5 to 5.0 m.sup.2 /g. These materials also exhibit a resistance to compression deflection such that a confining pressure of 5.1 kPa produces after 15 minutes a strain of from about 5% to 95% compression when the material is saturated at 37.degree. C. to its free absorbent capacity with synthetic urine.
A polymeric foam material especially suitable for absorbing and retaining aqueous body fluids, said foam material, when washed and dried, comprising a hydrophilic, flexible structure of interconnected open cells having sufficient residual hydrophilizing agent comprising a non-irritating surfactant to render the surface of the structure hydrophilic, which structure has, when in contact with aqueous body fluids:
A polymeric foam material especially suitable for absorbing and retaining aqueous body fluids, said foam material, when washed and dried, comprising a hydrophilic, flexible structure of interconnected open cells, which structure comprises a polymerized water-in-oil emulsion, which emulsion prior to polymerization comprises
Dependencies are inferred from the claim text.