FIELD: cover compositions. SUBSTANCE: thermoactive powder composition comprises the following components, mas. p.: polyester or acryl polymer 100; substance containing saturated acid hydroxylamide group 0.1-15 at mole ratio of beta-hydroxyalkylamide hardening agent and polyester or acryl polymer as measured for acid groups from 0.6 to 6:1. The indicated powder composition can be used for preparing covers exhibiting the improved optical properties, for example, luster, "orange crust" index and image clearness. EFFECT: improved quality and properties of the composition. 5 cl, 5 tbl, 5 ex
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