N-O-carboxymethylchitosonium carboxylate salts
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United States of America Patent
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May 2, 1995
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N/A
app pub date -
Jan 26, 1993
filing date -
Oct 9, 1991
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Abstract
New derivatives of carboxymethyl chitosan are disclosed, which are designated as N,O-Carboxymethylchitosonium carboxylates. The derivatives are ammonium salts made by acidifying a substantially neutral suspension of solid N,O-carboxymethyl chitosan in a diluent with an aqueous solution of the carboxylic acid. The carboxylic acid substitutes on the primary amine sites of the N,O-carboxymethyl chitosan.
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