GRANULATED PYROTECHNIC COMPOSITION FOR VOLUMETRIC FIRE EXTINGUISHING Russian patent published in 2019 - IPC A62D1/06 

FIELD: chemistry.

SUBSTANCE: invention relates to aerosol-forming compositions used in fire extinguishing in closed volumes. Granulated pyrotechnic composition for volumetric fire extinguishing contains oxidising agent – potassium nitrate, combustible binder – iditol and gas-forming dicyandiamide. Composition contains iditol, which is added in form of 50 % solution in ethyl alcohol in amount of 2.5–3.0 wt% and in the form of powder in amount of 8.5–10.0 wt.%, with ratio of 1:3 respectively in terms of dry substance, with components ratio, wt.%: potassium nitrate 61–65, iditol 11–13, dicyandiamide 24–26.

EFFECT: composition provides functional reliability and maximum efficiency of fire extinguishing in closed volumes with minimum content of harmful substances in the generated aerosol and maximum carryover of combustion inhibitors into the functional aerosol, reduced process time of drying with kneading of ready mixture.

1 cl, 2 tbl