FIELD: chemistry.
SUBSTANCE: scope of invention covers new azo dyes intended to obtain spin dyed plastics or dope-dyed fibers. Azo dyes are described with formula I 
in which each of R1 and R2 independently from each other are -NH-(CH2CH2)-OH, -NH-CH2-CHOH-CH2-OH, -NH-(CH2CH2)-S-(CH2CH2)-OH, -NH-(CH2CH2)-NH-(CH2CH2)-OH,-NH-(CH2CH2)-NH2,-NH-CH2-CHOH-CH2-NH2, -NH-CH2-CON(CH2CH2OH)2,-NH-CH2CH2-CON(CH2CH2OH)2, 
, R3 - -CN or -CONH2, R4 - methyl or trifluoromethyl, R5 -CF3, 
, R6 - hydrogen or chlorine atom and R7 - hydrogen, chlorine, bromine atom, -NO2.
EFFECT: proposed azo dyes possess elevated dying capacity.
5 cl, 18 tbl, 2 ex
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