METHOD OF OBTAINING DISC THIN-DOME GUNPOWDER Russian patent published in 2014 - IPC C06B21/00 C06B25/00 

FIELD: chemistry.

SUBSTANCE: invention relates to method of obtaining thin-dome disk gunpowder by water-disperse method. Method of obtaining gunpowder includes mixing in water gunpowder components: pyroxylene with high nitrogen content with conventional viscosity 1.0-4.0°E or based on it gunpowder mass with 15-25 wt % of nitroglycerine, and stabilizer of chemical stability, preparation of gunpowder varnish in ethyl acetate, with ratio between volumes of water and gunpowder varnish 0.5-0.8, dispersion of gunpowder varnish with introduction of emulsifier, introduction of sodium sulfate, removal of ethyl acetate, washing, sorting and drying gunpowder elements; after removal of ethyl acetate temperature in reactor is reduced to 50-60°C, return technological wastes are introduced, with restoration of initial ratio between water and gunpowder volumes. Obtained mass is mixed for 20-30 min, with redistribution of ethyl acetate, dehydrated; final removal of solvent is performed by distillation with increase of temperature in reactor to 92-95°C.

EFFECT: invention ensures obtaining dense disc powder with small thickness of burning dome and increase of manufacturability of gunpowder production by preservation of ratio of water and varnish phases at the initial stage of solvent distillation and increase of main fraction output.

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