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US 7,053,131 B2Granted
Absorbent articles comprising supercritical fluid treated HIPE, I-HIPE foams and other foams
AssigneeKimberly-Clark Worldwide, Inc.
InventorsYoung C. Ko, Jeffrey D. Lindsay
Life of this patent
Estimating the term…
Abstract
The present invention comprises compositions and methods of making high internal phase emulsion foam (HIPE) and inverse high internal phase emulsion foam (I-HIPE) using super critical fluids. Such foams may be used in a wide variety of articles such as absorbent articles.
Claims22
A method of making an absorbent foam comprising:
- a) combining a water phase and a super critical fluid phase, said water phase comprising effective amounts of at least one superabsorbent precursor monomer;
- and
- b) combining an oxidizing initiator in one of the super critical fluid phase and water phase, and a reducing initiator in the other of the supercritical fluid phase and water phase, whereby the super critical fluid phase and the water phase form an emulsion, such that polymerization of the at least one superabsorbent precursor monomer takes place in the water phase to form a polymerized material.
Dependencies are inferred from the claim text.