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US 12,319,804 B2Granted
High internal phase emulsion foam having cellulose nanoparticles
AssigneesThe Procter & Gamble Company, Case Western Reserve University
InventorsStuart J. Rowan, Donald L. Feke, Vahid Karimkhani, Ica Manas-Zloczower, Boran Zhao, Wade Monroe Hubbard, Jr., Maxwell Joseph Wingert, Steven Ray Merrigan
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Abstract
A High Internal Phase Emulsion (HIPE) foam having cellulose nanoparticles.
Claims20
An absorbent article comprising an absorbent core, the absorbent core comprising a high internal phase emulsion foam formed by polymerizing a high internal phase emulsion comprising:
- a) an oil phase comprising:
- i) a monomer comprising a substantially water-insoluble monofunctional alkyl acrylate or alkyl methacrylate, constituting from about 20% to about 97% by weight of the oil phase;
- ii) a cross-linking agent;
- iii) an emulsifier;
- iv) cellulose nanoparticles;
- and
- b) an aqueous phase comprising a water-soluble electrolyte,
- wherein the foam is an open-cell foam wherein at least about 80% of cells in the foam that are at least 1 μm in size are in fluid communication with at least one adjoining cell;
- and
- wherein the high internal phase emulsion has a water-to-oil ratio of 13:1 to 65:1.
7 more elements
An absorbent article comprising an absorbent core, the absorbent core comprising a high internal phase emulsion foam formed by polymerizing a high internal phase emulsion comprising:
- a) an oil phase comprising:
- i) a monomer comprising a substantially water-insoluble monofunctional alkyl acrylate or alkyl methacrylate, constituting from about 20% to about 97% by weight of the oil phase;
- ii) a cross-linking agent;
- iii) an emulsifier;
- iv) cellulose nanoparticles;
- and
- b) an aqueous phase comprising a water-soluble electrolyte,
- wherein the foam is an open-cell foam.
5 more elements
Dependencies are inferred from the claim text.