FIELD: chemistry.
SUBSTANCE: new bonds of the formula I 
can find use for dyeing plastics. In the general formula (I), R1 designates the radical of the formula II 
, R2 designates NH2 or a radical of formula II, R3 and R4 each independent of each other designate a hydrogen atom or hydroxyl, R5 designates a hydrogen atom or -S-CH2-CH2-OH, where X designates a direct connection, Y designates -OH, and n designates number 2, under the condition that one of the radicals R3, R4 and R5 does not designate hydrogen.
EFFECT: increase in the effectiveness of application.
2 cl, 2 ex, 1 tbl
