METHOD OF PRODUCING SYNTHETIC PIGMENTS Russian patent published in 2024 - IPC C09B67/04 C09B67/22 C09C3/06 C09C3/08 

FIELD: production of composite materials.

SUBSTANCE: invention relates to production of composite materials, in particular to synthetic pigments, which can be used in production of paints, enamels, colored cements and concrete, dry mixtures, for coloring plastics and industrial rubber articles. Described is a method of producing synthetic pigments by treating a pigment and a filler in a centrifugal elliptical ball mill, carried out in a single step using a two-tube centrifugal elliptical mill, Each of the pipes of which has two grinding chambers, separated by a grid, to ensure ball loading of the first chamber of 60–70% by volume and of the second chamber of 40–50%. Filler is mixed with an organic pigment and an inorganic pigment at a weight ratio of (80–70):(0.4–1.5):(19.6–28.5), respectively and performing mechanical activation with simultaneous encapsulation of filler with pigment in centrifugal elliptical ball mill for 2.5–3.0 minutes, wherein the filler used is calcite, the organic pigment is a green phthalocyanine pigment or a yellow light-fast pigment, and inorganic pigment is chromium oxide or yellow iron oxide pigment.

EFFECT: simplified manufacturing process without loss of consumer properties of pigments.

1 cl, 1 tbl, 3 ex