METHOD OF MANUFACTURING SILVER-CONTAINING CELLULOSE MATERIALS Russian patent published in 2005 - IPC

FIELD: modified cellulose materials.

SUBSTANCE: invention relates to silver-containing microcrystalline cellulose for use as bactericide dressing facilities. Silver-containing cellulose materials are manufactured by impregnating cellulose mixture at room temperature with 0.25-2.0% silver nitrate aqueous solution at ratio of 1 g cellulose material per 15-30 ml AgNO₃ solution. Reaction mixture is heated at 85-150°C during 1-4 h. In order to increase silver content, aqueous silver nitrate solution is supplemented by ammonia and/or glycerol to concentration of ammonia 0.5-15 vol % and that of glycerol 20-50 wt %, while observing the same operational conditions. Starting cellulose mixture can be microcrystalline cellulose, cotton fiber, linen and product thereof, and cotton dressing material.

EFFECT: enabled silver level control in modified cellulose material.

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