METHOD OF PRODUCING BALL POWDER Russian patent published in 2017 - IPC C06B21/00 C06B25/18 

FIELD: weapons and ammunition.

SUBSTANCE: to produce the powder a polymeric binder-pyroxylin with a viscosity of 1.0-8.0°E and polyvinylnitrate (PVN) with a molecular weight of 400,000-200,000 c.u. are mixed in water, keeping the ratio between pyroxylin and PVN equal to (85-90):(15-10). The mixture is stirred at increasing temperature, then powder lacquer is prepared in ethyl acetate. The powder lacquer is dispersed with the adding an emulsifier and sodium sulfate is fed to dehydrate the particles. After that, the ethyl acetate is removed, the powder elements are washed, sorted and dried.

EFFECT: method makes it possible to obtain coarse-particle granules by water dispersion technology on the basis of a bipolymer binder nitrocellulose-low molecular PVN, thereby increasing the viscosity range of the applied pyroxylin, to increase the concentration of the polymer binder in the lacquer phase and the yield of the desired product.

1 dwg, 1 tbl, 5 ex