DISPERSIVE COATING Russian patent published in 2023 - IPC C08K3/08 C08K5/17 C08L63/00 C09D167/00 

FIELD: chemical industry.

SUBSTANCE: invention relates to the chemical industry and can be used in the manufacture of dispersed coatings with a metallic effect. The composition of the dispersion coating, preferably powder, includes: at least one hardener containing an epoxy group, for example, an epoxy resin; at least one polyester polymer; at least one amino alcohol with a molecular weight of 50-400 g/mol, containing 1-3 amino groups and 1-5 hydroxyl groups, in an amount of 0.1-10% of the total weight of the composition; and at least one metallic pigment containing Al, in an amount of 1-10% of the total mass of the composition. Amino alcohol can be selected from diethanolamine, ethanolamine, 2-amino-1-butanol, 2-amino-2-methyl-1-propanol, 2-amino-2-ethyl-1,3-propanediol, tris-(hydroxymethyl)-aminomethane, 2- amino-2-methyl-1,3-propanediol, monomethylaminoethanol, isopropylaminoethanol, tert-butylaminoethanol, ethylaminoethanol, n-butylaminoethanol, isopropanolamine, diisopropanolamine and mixtures thereof. To obtain this composition, a hardener, a polyester polymer and an amino alcohol are mixed. The mixture is extruded and a metallic pigment is added to the obtained particles. The composition is applied to the substrate by electrostatic spraying with optional subsequent curing of the resulting coating. The specified composition forms the top layer on the substrate.

EFFECT: increased resistance of the coating to color change due to fingerprints during operation or touch, increased corrosion resistance of the metallic pigment, improved dispersibility in the composition, exclusion of the upper transparent layer.

17 cl, 10 tbl