FIELD: dyeing of polymers. SUBSTANCE: composition has: yellow cationic dye of the general formula I given in description 1-200 mas. p. ; red cationic dye of the general formula II given in description 1-200 mas. p. ; blue cationic dye of the general formula III given in description also 1-200 mas. p. and/or carbon black 1-200 mas. p. Dyes I-III in composition show good solubility in acetone (up to 10% ) that provides to use composition for dyeing of polyacrylonitrile copolymers in mass from solutions in acetone, dimethylformamide and other organic solvents. EFFECT: enhanced quality of composition.
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