Oxidized cellulose

Details Oxidized cellulose Oxidized cellulose

1995-04-28

1998-07-14

Nutter, Nathan M.

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

Organic compounds

Carbohydrates or derivatives

536 84, 536120, 536124, C08B 1100, C07H 1504

Patent

active

057806187

ABSTRACT:
A method for making an oxidized cellulose product from a cellulose material is disclosed. The method involves oxidizing a cellulose material into an oxidized cellulose product, comprising treating the cellulose material with a hypochlorite solution having an active chlorine content of between about 4 and about 6%, at a pH exceeding 9.5 and at a temperature, and for a time, effective to convert the cellulose material into the oxidized cell product; filtering the oxidized cellulose product; and washing the oxidized cell product with an antichlor agent such as sodium thiosulfate to remove chlorine and to raise the oxidized cellulose product to a neutral pH.
The oxidized cellulose product may be used to form films, dispersions, gels, as carriers, for pharmaceuticals, cosmetics and other products.

REFERENCES:
patent: 4480089 (1984-10-01), Chen et al.

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