Method of makig a superabsorbent polymer foam
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United States of America Patent
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-
Jul 12, 1994
Grant Date -
N/A
app pub date -
Mar 26, 1993
filing date -
Mar 26, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of making an improved superabsorbent polymer foam having a morphology to provide improved absorptive properties is disclosed. The foam preferably comprises a superabsorbent polymer formed from a substantially water-soluble, unsaturated monomer having neutralized carboxyl groups and a substantially water-soluble internal crosslinking agent. The monomer and crosslinking agent are expanded in the presence of a substantially water-insoluble blowing agent and a suitable solvent and reacted to form a superabsorbent polymer foam having substantially continuous, intercommunicating channels substantially throughout the foam and a relatively high surface area to mass ratio. Absorbent products, members and articles containing the foam are also disclosed.
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