Preparation of water-soluble acylated chitosan

Details Preparation of water-soluble acylated chitosan Preparation of water-soluble acylated chitosan

1986-06-25

1991-02-26

Griffin, Ronald W.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbohydrates or derivatives

536 553, C07H 504, C08B 3708

Patent

active

049963074

ABSTRACT:
A water-soluble acylated chitosan having a degree of acylation of 35 to 65% is prepared by dissolving a water-insoluble chitosan in the form of a random copolymer having a degree of deacetylation of at least 70% in an aqueous acid solution, diluting the solution with water or a water-miscible solvent such as methanol, and adding an acylation agent such as acetic anhydride to the diluted solution. The acylated chitosan is obtained in high yields within a few hours at about room temperature.

REFERENCES:
patent: 4401807 (1983-08-01), Kosugi

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