Azo dyes

Details Azo dyes Azo dyes

1984-05-02

1986-04-15

Waltz, Thomas A.

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

534775, 534845, C09B 29036, C09B 2908, C09B 4302

Patent

active

045828970

ABSTRACT:
Monoazo dyes of the formula ##STR1## in which K is a radical of the formula ##STR2## or of the formula ##STR3## in which R.sub.1 and R.sub.2 independently of one another is (sic) hydrogen, C.sub.1-4 -alkyl, which can be substituted by halogen, cyano, hydroxyl, carboxyl, sulfo, sulfato, C.sub.1-4 -alkoxy, C.sub.1-4 -alkoxycarbonyl, C.sub.1-4 -alkanoyloxy, phenyl, sulfophenyl and naphthyl, or cyclohexyl, or C.sub.1-4 -alkenyl, which can be substituted by halogen, or phenyl or naphthyl, or in which R.sub.1 and R.sub.2, together with the nitrogen atom connecting them and where relevant with the inclusion of a further hetero-atom, form a heterocyclic 5-membered or 6-membered ring, R.sub.3 is hydrogen, C.sub.1-4 -alkyl, C.sub.1-4 -alkoxy, which can be substituted by hydroxyl and C.sub.1-4 -alkoxy, or C.sub.1-4 -alkanoylamino, or benzoylamino, which can be substituted in the benzene nucleus by methyl, ethyl, methoxy, ethoxy, chlorine, carboxyl and sulfo, or ureido, C.sub.1-4 -alkylsulfonylamino, or phenylsulfonylamino, which can be substituted in the benzene nucleus by methyl, ethyl, methoxy, ethoxy, chlorine, carboxyl and sulfo, or naphthylsulfonylamino, R.sub.4 is methyl or phenyl and R.sub.5 is hydrogen or C.sub.1-8 -alkyl, and in which, if K is the radical of the formula (2), R.sub.3 may not be hydrogen if R.sub.1 or R.sub.2 is benzyl, produce, on polyamide material, dyeings with good light fastness and wet fastness.

REFERENCES:
patent: 2080188 (1937-05-01), Scheidegger
patent: 3769279 (1973-10-01), Kuhlthau et al.
patent: 4046757 (1977-09-01), Meybeck et al.
patent: 4048154 (1977-09-01), Westphal
patent: 4105655 (1978-08-01), Gottschlich et al.
patent: 4148791 (1979-04-01), Altermatt
patent: 4152114 (1979-05-01), Koller et al.
patent: 4163013 (1979-07-01), Hugl et al.
patent: 4248774 (1981-02-01), Hugl et al.
patent: 4249275 (1981-02-01), Hugl et al.

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