FIELD: chemistry.
SUBSTANCE: in a method of obtaining nitrocellulose by nitration of cellulose with a mixture of nitrogen (V) oxide with 100% nitric acid in a medium of liquid or supercritical carbon dioxide under increased pressure, in accordance with the solution, a nitration process is performed with a weight part of 100% nitric acid in the nitrating mixture from 29% to 47%, nitration modulus 6.4-8.4 and a temperature of 20-50°C for 60-180 min. The process of cellulose nitration is carried out under pressure of 80-300 bars.
EFFECT: obtaining products with high content of nitrogen from different types of cellulose, improvement of ecological characteristics of the process due to elimination of salts of hydrofluoric acid from the process, simplification of the process technology due to elimination of negative temperatures, as no additional energy consumption for cooling and application of coolants is required.
3 cl, 18 ex
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