| 摘要 |
Azo complexes I(A = C1-4 alkyl, C1-4 alkoxy, halogen, nitro, sulfonyl or carboxyl; X = -0-, -COO; Q= -N = N-B, -NHR3; B = coupling residue contg. an enolic OH group or benzene coupling residue contg. NR1R2 group. R1 = H, C1-6 alkyl; C2-4 hydroxyalkyl; R2 = H, C1-6 alkyl, C1-6 alkyl phenyl or C2-4 hydroxyalkyl; R3 - R;-CO; R; = H, alkyl; M=a 1:2 complexing metal, Y = H, equivalent of nondyed cation; X" = -OH, -COOH, C1-4 alkoxy, Halogen) were prepd. and used to dye leather fast gray shades.
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