METALLIC LUSTROUS PIGMENTS BASED ON SUBSTRATE PLATES WITH THICKNESS OF 1 nm TO 50 nm Russian patent published in 2022 - IPC C09C1/64 C09C1/00 C09C3/06 B82Y30/00 A61K8/19 A61K8/26 A61Q1/02 C03C1/04 C04B33/14 C09D11/00 C08K3/08 C08K3/20 

FIELD: chemical or physical processes.

SUBSTANCE: invention can be used in production of varnishes, printing inks, inks, polymer materials, glass, ceramic products and compositions of decorative cosmetics. Disclosed is a metallic lustrous pigment based on coated aluminum plates. Aluminum plates have a monolithic structure and are surrounded by at least one coating B of iron (III) oxide, wherein the weight fraction of iron (III) oxide in the coated aluminum plates is at least 65 wt. %. Between the surface of the aluminum plates and the coating B there is an additional coating A made of at least one low-refractive metal oxide, which has a refraction index not exceeding 1.8, selected from a group consisting of SiO₂, B₂O₃, MnO₂, MgO, GeO₂ and Al₂O₃. Aluminum plates have thickness in range of 1 nm to 30 nm, coating B has thickness in range of 100 nm to 300 nm. Also disclosed is a version of a metallic lustrous pigment, a method of producing said pigments and use of the pigment.

EFFECT: group of inventions enables to obtain metallic lustrous pigments with high opacity and low flammability.

10 cl, 1 tbl, 4 dwg, 3 ex