METHOD OF CELLULOSE AZILONITRATE OBTAINING Russian patent published in 2018 - IPC C08B15/06 

Abstract RU 2659283 C1

FIELD: pulp industry.

SUBSTANCE: invention relates to preparation process of cellulose derivatives, namely cellulose azidonitrate. Preparation process of cellulose azidonitrate comprises reacting cellulose chloronitrate with sodium azide in molar ratio of 1:3 with stirring in aprotic polar solvent at temperature of 40–70 °C in 30–60 minutes, precipitation of obtained product, its filtration, washing and drying. Dimethylsulfoxide, dimethylformamide is used as solvent.

EFFECT: invention makes it possible to considerably shorten process duratio for cellulose azidonitrate obtaining.

3 cl, 2 dwg, 2 tbl

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RU 2 659 283 C1

Authors

Romanova Svetlana Marselevna

Sabirova Dinara Ilnurovna

Dates

2018-06-29Published

2017-05-10Filed