LUMINESCENT COMPOSITE MATERIAL BASED ON Eu(III) COMPLEXES AND ITS PRODUCTION METHOD Russian patent published in 2023 - IPC C09K11/06 C07F5/00 C07C49/92 

FIELD: composite materials.

SUBSTANCE: invention can be used in the manufacture of luminescent marks. Luminescent composite material contains a polymer matrix of a transparent epoxy composition and a europium complex of tris-(4,4,4-trifluor-1-(1,3,5-trimethyl-1H-pyrazole-4-yl)butane-1,3-dionato)(dimethanol) of europium (III). The epoxy composition contains a product of polycondensation of 4,4'-(propane-2,2-diyl)diphenol and 3-chlor-1,2-epoxypropane with an average molecular weight of 450-600 Da. A method for the production of tris-(4,4,4-trifluor-1-(1,3,5-trimethyl-1H-pyrazole-4-yl)butane-1,3-dionato)(dimethanol) of europium (III) and a method for the production of luminescent composite material are also proposed.

EFFECT: increase in solubility of a europium complex in a polymer matrix, while saving high values of luminescence of composite material.

3 cl, 2 dwg, 2 tbl, 7 ex