Method of making an absorbent composite
AssigneeKimberly-Clark Worldwide, Inc.
InventorsSridhar Ranganathan, Jian Qin, Michael William Veith
Life of this patent
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Abstract
In a method of making an absorbent composite, a porous, stabilized structure is formed and impregnated with a flowable superabsorbent precursor. The flowable superabsorbent precursor is cross-linked to form a superabsorbent material within the stabilized structure. The surface area of one of the flowable superabsorbent precursor impregnated with the stabilized structure and the superabsorbent material formed within the structure is increased. In one embodiment, the surface is increased by freeze drying the impregnated structure.
Claims55
A method of making an absorbent composite, said method comprising:
- forming a porous, stabilized structure;
- impregnating said structure with a flowable superabsorbent precursor comprising a solvent and a monomer;
- polymerizing said monomer after impregnating said structure;
- cross-linking said flowable superabsorbent precursor to form a superabsorbent material within the stabilized structure;
- and
- increasing a surface area of one of the flowable superabsorbent precursor impregnated within the stabilized structure and the superabsorbent material formed within the stabilized structure.
A method of forming a superabsorbent material within a porous, stabilized structure, said method comprising:
- impregnating said structure with a flowable superabsorbent precursor comprising a solvent and a monomer;
- polymerizing said monomer after impregnating said structure;
- cross-linking said flowable superabsorbent precursor to form a superabsorbent material within the stabilized structure;
- and
- increasing a surface area of one of the flowable superabsorbent precursor impregnated within the stabilized structure and the superabsorbent material formed within the stabilized structure.
A method of making an absorbent composite, said method comprising:
- forming a porous, stabilized structure;
- impregnating said structure with a flowable superabsorbent precursor;
- cross-linking said flowable superabsorbent precursor to form a superabsorbent material within the stabilized structure;
- and
- increasing a surface area of one of the flowable superabsorbent precursor impregnated within the stabilized structure and the superabsorbent material formed within the stabilized structure by agitating said one of the flowable superabsorbent precursor and the superabsorbent material.
A method of making an absorbent composite, said method comprising;
- forming a porous, stabilized foam structure;
- impregnating said structure with a flowable superabsorbent precursor;
- cross-linking said flowable superabsorbent precursor to form a superabsorbent material within the stabilized structure;
- and
- increasing a surface area of one of the flowable superabsorbent precursor impregnated within the stabilized structure and the superabsorbent material formed within the stabilized structure.
Dependencies are inferred from the claim text.