Process for derivatizing polyglucosamines
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United States of America Patent
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Apr 15, 1997
Grant Date -
N/A
app pub date -
Apr 10, 1995
filing date -
Apr 10, 1995
priority date (Note) -
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Importance
Abstract
Processes for the preparation of polyglucosamine derivatives, e.g., hydroxypropyl chitosan and carboxymethyl chitosan, are disclosed. The polyglucosamine derivatives can be prepared in a covalently bonded form using a dilute caustic medium. Strong bases and undesirable water-immiscible organic solvents can be avoided. The covalently bonded derivatives dissolve into the dilute caustic medium upon formation. Compositions containing the derivatives and uses for the derivatives are also disclosed.
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