Method of preparing a concentrated solution of a...

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Carbohydrate doai

Reexamination Certificate

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C536S055200

Reexamination Certificate

active

06972285

ABSTRACT:
A concentrated solution of a polyglucosamine such as chitin or chitosan is prepared by forming an aqueous slurry of said polyglucosamine with a peroxide, and adding copper ion to said slurry so as to solubulize said polyglucosamine.

REFERENCES:
patent: 5268174 (1993-12-01), Sakuma et al.
patent: 5374627 (1994-12-01), Ito et al.
patent: 5541233 (1996-07-01), Roenigk
patent: WO 00/32041 (2000-06-01), None
Robyt, J. F. et al Oxidation of Primary Alcohol Groups of Naturally Occuring Polysaccharides With 2,2,6,6-Tetramethyl-1-Piperidine oxoammonium ion:, J. Carbohydrate Chemistry, 1996, 15(7), 819-830.

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