Monoazo pigments containing heterocycles, and high-molecular organic materials dyed therewith
AssigneeCiba-Geigy Corporation
InventorsStefan Hari, Arnold Wick
Life of this patent
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Abstract
Compounds of the formula I ##STR1## wherein the symbols Z, R.sub.1, R.sub.2, m and n have the meanings defined in claim 1, are suitable, as high-grade pigments, for dyeing high-molecular organic material. They are characterized in particular by good fastness to migration and to cross-lacquering, as well as to weather and light.
Claims10
A compound of the formula I ##STR8## wherein R.sub.1 is hydrogen, methyl, chlorine, methoxy, ethoxy, phenoxy or C.sub.2 -C.sub.5 -alkoxycarbonyl, R.sub.2 is methyl, chlorine, fluorine, bromine, C.sub.1 -C.sub.4 -alkoxy, phenoxy, methoxycarbonyl, ethoxycarbonyl, carbamoyl, nitro or a group --NHCO--R.sub.3, in which R.sub.3 is a C.sub.1 -C.sub.3 -alkyl group, Z together with the two carbon atoms to whih it is bound forms a 5- or 6-membered heterocyclic ring, where Z is a bivalent radical of the formula --CONHCO--, --CONHCONH--, --CONHCR.sub.5 .dbd.N--, --NHCONR.sub.4 --, --NHCOCONH--, --NR.sub.4 COO--, --NR.sub.4 COS--, --N.dbd.CR.sub.6 O--, --N.dbd.CR.sub.6 S--, --N.dbd.CR.sub.6 NH--, --NHCOCH.dbd.CR.sub.4 -- or --NHCOCH.sub.2 O--, in which R.sub.4 is hydrogen, C.sub.1 -C.sub.4 -alkyl or phenyl which is unsubstituted or substituted by halogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy, R.sub.5 is hydrogen or a group ##STR9## where R.sub.4 has the meaning defined above, and R.sub.6 is hydrogen, methyl or phenyl, n is 1 or 2, and m is 1, 2 or 3.
Dependencies are inferred from the claim text.