Coloring method of tangible matter having polyamide bond and tangible matter colored by such method

摘要

A coloring method of a tangible matter having a polyamide bond, characterized in that the tangible matter having a polyamide bond is treated with an aqueous solution containing an aromatic derivative having one or more hydroxyl groups and a metal salt at a temperature of 40° C. or more, and a polyamide tangible matter colored by such a method.