| 摘要 |
Sulfo group-free basic disazo and trisazo dyes of the formula <IMAGE> +TR <IMAGE> wherein R is hydrogen; unsubstituted C1-4alkyl; C2-4-alkyl monosubstituted by hydroxy, the hydroxy being on other than the alpha -carbon atom; di-(C1-4alkyl)amino or -CH2)n Ko, R1 is hydrogen, C1-4alkyl, C1-4hydroxyalkyl or C1-4alkoxy, n is 2 or 3, Ko is -N(CH3)2, -N(+)(CH3)3A(-), -N(+)(CH3)2CH2CH2OH A(-) or <IMAGE> each A(-) is an anion, Zo is a direct bond or a bridging group, and Kx is a radical of a coupling component of the pyrazolone-5,5-aminopyrazole, beta -naphthol, alpha -naphthol, aniline, phenol or acetoacetylphenylamide series or the radical of barbituric acid, dimedone or a dimedone carboxylic acid ester, which compounds, where Kx is a radical of a coupling component of the pyrazolone-5,5-aminopyrazole, beta -naphthol, alpha -naphthol, aniline, phenol or acetoacetylphenylamide series, contain 1, 2 or 3 basic groups or, where Kx is the radical of barbituric acid, dimedone or a dimedone carboxylic acid ester, contain 1 or 2 basic groups, their production and use in dyeing cationic dyeable substrates, especially paper.
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