N-halochitosans, their preparation and uses
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United States of America Patent
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Nov 8, 1994
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Feb 24, 1993
filing date -
Nov 14, 1990
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Abstract
N-Halochitosans which are terpolymers containing 1 to 35% of 2-deoxy-2-acetaminodoglucose monomeric units, 1 to 90% of 2-deoxy-2-haloaminoglucose monomeric units, and 8-98% of 2-deoxy-2-haloaminoglucose monomeric units wherein the halogen is chlorine or bromine and their preparation is disclosed. The preferred preparation is by treatment of an aqueous solution of a chitosan salt with a halogenating agent.
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