Porous absorbent materials having modified surface characteristics and methods for making the same
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United States of America Patent
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Nov 16, 1999
Issued Date -
N/A
app pub date -
Jan 6, 1997
filing date -
Feb 17, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A porous absorbent material that comprises a water-insoluble, water-swellable absorbent polymer. The absorbent material comprises a polyether and/or a polycation bonded to the absorbent polymer whereby the contact angle of blood on a surface of the absorbent material attains from about 0 degree to about 40 degree. Because of the improved wettability with liquids as well as the porous structure, the absorbent material can provide higher absorbent characteristics with liquids, in particular with blood.
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