| abstract |
FIELD: chemistry. n SUBSTANCE: invention relates to a thermally solidified powder coating, a method of its obtaining, application of the powder coating composition for its application on a substrate, the substrate, covered with the powder coating composition, and a method of applying coating on the substrate with application of the powder coating composition. The powder coating composition contains resin with reactive unsaturation, in which all the said unsaturation represents double bonds carbon-carbon, directly bound with an electron-acceptor group, a system of thermal initiation, which contains a transition metal-based catalyst and peroxide, and a common cross-linking agent. Peroxide is selected from peroxyethers, monoperoxycarbonates and their mixtures, and the common cross-linking agent is selected from vinyl ethers, vinyl esters, vinylamides, itaconates, enamines and their mixtures. The amount of the thermal initiation system is selected in such a way that when the powder coating composition is applied on the substrate and solidified at a temperature of 130°C for 20 minutes the coating with resistance to acetone, equal to at least 50 double steps in wear, is obtained. n EFFECT: creation of a single-component thermally solidified powder coating composition, which is easily processed in the extruder and which can be solidified to acceptable degree in the process of low temperature solidification. n 41 cl, 8 tbl, 4 ex |