COMPOSITE MATERIAL FOR MARKING A MATERIAL OBJECT Russian patent published in 2020 - IPC G07D7/00 

FIELD: manufacturing technology.

SUBSTANCE: invention relates to the technology of producing special materials used for marking information carriers, such as banknotes, excise and postage stamps, identification documents, securities, plastic cards, museum exhibits, and various material objects requiring authentication. Composite material consists of at least three components: a first inorganic compound with low adhesion to the material of the object, having given luminescent properties in wavelength range (400–2500) nm, second inorganic compound with low adhesion capacity to material of object and with refraction index lower than that of first inorganic compound, at least in wavelength range (200–2500) nm, a third material based on a chemical compound with high adhesion capacity to the base material of the marking.

EFFECT: technical result achieved when implementing the developed composite material consists in ensuring reliable retention of material particles, both at the stage of marking of the carrier, and during its operation.

9 cl, 2 dwg, 3 tbl