MARKING ADDITIVE TO EXPLOSIVE, METHOD OF ITS PREPARATION, METHOD FOR DETERMINATION OF EXPLOSIVE ORIGIN Russian patent published in 2017 - IPC C06B23/00 

FIELD: blasting.

SUBSTANCE: marking additive contains material having electret properties and having residual polarisation obtained by means of bulk-charge polarisation of electron or ionic types. Natural mica is used as material having the electret properties. In order to prepare the marking additive, a plate made of material having electret properties is placed in electric field for electrostatic recording of information code by means of bulk-charge polarisation of electron or ion types. Then the plate with information code is ground to obtain particles of required shape and size and mixed with explosive substance. For identification, the sample is taken in polarised light, the presence of marking additive it is determined by presence of luminescence, the selected samples are placed in the form of splines in a reading device for reading the information code, the code of the marking substance is compiled and compared with available base.

EFFECT: determination of explosive origin, including the manufacturer of the explosives, in the event of an unauthorised distribution of explosives or terrorism, when explosion has already occurred and only the explosion products are available.

16 cl