| 摘要 |
New trisazo dyes, having the structure <IMAGE> (I) in which M represents H, Na, K, Li, or N(R3)H wherein R represents -H, -CH3, -C2H5, -C3H7, -CH2CH2OH, -CH2CH(OH)CH3 or -CH2CH2OCH2CH2OH; A1 and A2, which may be identical or different, represent the residual moiety of a coupling component which contains at least one amino group or one hydroxy group and wherein said coupling component has the following general structures II and III: <IMAGE> (II) <IMAGE> (III) and in which M has the above meanings; R1 represents -NH2 or -OH; R2 represents -NH2, -OH, -O-alkyl, -NHCO lower alkyl, -NH aryl, -NH lower alkyl, -N(lower alkyl)2 and -NHCH2COOM; R3 represents hydrogen, a lower alkyl or -SO3M; R4 represents -H, -NH2, -OH, -O-alkyl, -NHCO lower alkyl, -NH aryl, -NH lower alkyl and -NHCH2COOM; and n=0, 1 or 2. They are useful for dyeing substrates which may be dyed by substantive dyes, particularly leather and paper.
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