METHOD OF PREPARING PELLET POWDER Russian patent published in 2011 - IPC C06B25/24 C06B21/00 

FIELD: chemistry.

SUBSTANCE: invention relates to production of pellet powder, particularly powder with small thickness of a burning vault, meant for fitting mounting-construction, sport-hunting shot-gun and small-bore rifle cartridge. The method of producing pellet powder involves mixing one portion of the powder components in water - high-nitrogen pyroxylin, stabiliser, preparing powder varnish in ethyl acetate, dispersing powder varnish with addition of emulsifying agents, adding sodium sulphate to water in amount of 0.5-2.5 wt % in order to dehydrate varnish particles, removing ethyl acetate, washing, sorting and drying powder elements, wherein water is fed into the reactor while maintaining volume ratio of water to powder varnish of 0.5-0.8, the varnish is prepared in 2.0-3.0 pts. vol of ethyl acetate, the varnish is dispersed with addition of the emulsifying agent in amount of 0.5-1.0 wt % with respect to water, pyroxylin has relative viscosity of 1.0-4.0 °E, and nitroglycerin in amount of 15-25 wt % with respect to powder components is added in form of powder mass or nitroglycerin ballistite powder with composition NB.

EFFECT: high efficiency of the method.

1 tbl, 6 ex