Disazo dyes containing 1-amino-8-hydroxy-naphthalene-3,6-or 4,6- disulfonic acid biscoupling component radicals and 5-cyano-2, 4-or 4,6- dichloropyrimidyl fiber-reactive groups

摘要

Compounds of the formula ##STR1## salts thereof, and mixtures of such compounds and salts, wherein D.sub.1 is ##STR2## wherein R.sub.1 is hydrogen, halo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, --SO.sub.3 H or -- COOH, PPR.sub.2 is --COOH, --CONR.sub.6 R.sub.7, --SO.sub. 2 NR. sub.6 R.sub.7 or --SO.sub.2 --X, wherein each of R.sub.6 and R.sub. 7 is independently hydrogen, C.sub.1-4 alkyl, C.sub.2-4 -hydroxyalkyl or C.sub. 2-4 sulfatoalkyl, orPP--NR.sub.6 R.sub.7 is a saturated 5- or 6-membered heterocyclic ring containing no hetero atom in addition to the nitrogen atom to which R.sub.6 and R.sub.7 are attached or containing one hetero atom selected from nitrogen and oxygen in addition to said nitrogen atom, which ring is unsubstituted or substituted by 1 to 3 C.sub. 1-4 alkyl groups, andPPm is 0, 1 or 2, andP PD.sub.2 is ##STR3## wherein R.sub.3 is hydrogen, --SO.sub.3 H or -- COOH,PPR.sub.4 is hydrogen, C.sub.1-4 alkyl or C.sub.1-4 alkyl monosubstituted by hydroxy, halo, cyano, --SO.sub.3 H, --OSO.sub.3 H or --COOH,PPn is 0 or 1, andPPp is 1 or 2,PPwhereinP PX is --CHCH.sub.2 or -- W--Y,PPwhereinP PW is linear or branched C. sub.2-4 alkylene, andP PY is hydroxy or a group which can be split off under alkaline conditions,PPwith the provisos that (i) R.sub.1 may be -- COOH only when R.sub.2 is --SO.sub.2 -- X, (ii) D.sub.2 must be a group of Formula (d) when D.sub.1 is a group of Formula (a) wherein R.sub.1 is hydrogen, halo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy or --SO.sub.3 H, and R. sub.2 is --COOH, --CONR.sub.6 R.sub.7 or -- SO.sub.2 NR.sub.6 R.sub.7 or a group of Formula (b), and (iii) D.sub.2 must be a group of Formula (e) when D.sub.1 is a group of Formula (a) wherein R.sub.1 is --COOH, and R. sub.2 is --SO.sub.2 --X, useful for dyeing or printing hydroxy group- or nitrogen-containing organic substrates, for example leather and fiber material comprising natural or synthetic polyamides or natural or regenerated cellulose, especially textile material comprising cotton. The obtained dyeings and printings show good general fastness properties such as good light fastness, wet fastnesses and resistance towards oxidative influences.