| 摘要 |
Disazo and polyazo compounds of the formula <IMAGE> wherein each A is independently <IMAGE> and each R3 is independently C1-4alkyl, or each A, R3 and the <IMAGE> radical to which they are attached, taken together, independently, are <IMAGE> (b) wherein each R21 is independently halo, C1-4alkyl or C1-4alkoxy, p is 0, 1 or 2, the * denotes the carbon atom attached to the -N=N- radical, and the ** denotes the carbon atom attached to X, each R1 and the <IMAGE> radical to which it is attached taken together, independently, are the radical of an aromatic or heterocyclic coupling component, each A1 and A2 taken together are -O-Me-O-, wherein Me is copper, cobalt, iron, nickel, manganese or zinc, or each A1 is hydroxy, and each A2 is independently hydrogen, hydroxy or C1-4alkoxy, X is a direct bond or a bridging radical, each Y is independently a direct bond, C1-4alkylene, -CO-NH-(CH2)m-, -NH-CO-(CH2)m- or -SO2-NR4-(CH2)m-, wherein R4 is hydrogen or C1-4alkyl, m is 1, 2, 3 or 4, and the *** denotes the carbon atom attached to the Z group, each Z is independently <IMAGE> <IMAGE> <IMAGE> +TR <IMAGE> wherein A(-) is a non-chromophoric anion, m is 1, 2, 3 or 4, and p is 0, 1, or 2, and n is at least 2, with the provisos that (i) the compound is free of sulfo groups, and (ii) when the compound is in metal-free form, each A, R3 and the <IMAGE> radical to which they are attached form a group of formula (b) and each R1 and the <IMAGE>6 A1+RE radical to which it is attached together form a 1-phenylpyrazole group the phenyl ring of which is substituted by one -Y-Z group, which compounds are useful for dyeing and printing paper, leather, textile materials comprising natural or regenerated cellulose (for example, cotton, mercerized cotton, alkali treated cotton, hemp, sisal, jute and flax) and fibers, yarns and textile materials comprising polyamide or polyester modified to contain acid groups.
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