METHOD OF PRODUCING MICROCRYSTALLINE CELLULOSE Russian patent published in 1998 - IPC

Abstract RU 2119986 C1

FIELD: chemical- pharmaceutical and food industries. SUBSTANCE: crude cellulose with whiteness at least 65% is subjected to simultaneous hydrolysis and bleaching in sulfuric and peroxymonosulfuric acid solution with concentrations 2.5-10 and 0.48-3%, respectively, at atmospheric pressure and temperature 100-105 C for 0.5-3 h. Exhausted solution can be reused after addition of 1/3 parts of initial concentration of the two acids. EFFECT: simplified technology and enabled use of low- grade raw material. 2 cl, 7 ex

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RU 2 119 986 C1

Authors

Kuchin A.V.

Demin V.A.

Kukovitskij B.F.

Sazonov M.V.

Dates

1998-10-10—Published

1997-07-14—Filed