Hydrophilic ester polyurethane foams
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United States of America Patent
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N/A
Issued Date -
Aug 16, 2007
app pub date -
Feb 14, 2006
filing date -
Feb 14, 2006
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An ester polyurethane foam is prepared by reacting one or a mixture of hydrophilic polyester polyols with one or more isocyanates and a cell opening surfactant. The cured foam does not require post-foaming processing to achieve a water absorption rate of at least 20 pounds of water per square foot per minute, preferably at least 25 pounds of water per square foot per minute. The foam may be bonded to a substrate to form an absorbent article, such as a sponge, mop head, or a medical or industrial wipe.
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Cited Art Landscape
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