Water absorbent keratin and gel formed therefrom
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United States of America Patent
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Nov 13, 2001
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N/A
app pub date -
Sep 13, 1999
filing date -
Sep 13, 1999
priority date (Note) -
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Abstract
A hydratable, highly absorbent keratin solid fiber or powder capable of absorbing a large weight excess of water may be produced by partially oxidizing hair keratin disulfide bonds to sulfonic acid residues and reacting the sulfonic acid residues with a cation. The neutralized suspension can be filtered, washed, and dried, leaving keratin solid which can be shredded into fibers and further ground into powder. Addition of water to the solid produces a hydrogel. The powder or hydrogel may be useful as an absorbent material, as a therapeutic for skin, or as an excipient. Another use for the hydrogel is as a biocompatible viscoelastic filler for implant applications.
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