Monoazo dyes containing sulfoindole coupling components

Details Monoazo dyes containing sulfoindole coupling components Monoazo dyes containing sulfoindole coupling components

1984-02-27

1990-09-04

Higel, Floyd D.

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

Organic compounds

Azo

534731, 534782, 534790, 534887, C09B 2901, C09B 2940, D06P 139, D06P 324

Patent

active

049545639

ABSTRACT:
Monoazo dyes of the formula ##STR1## wherein R.sub.1 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen, C.sub.2 -C.sub.4 alkanoylamino or is an unsubstituted or substituted arylsulfonyl, aryloxy or arylcarbonyl radical; R.sub.2 is hydrogen, halogen, an unsubstituted or substituted alkyl, aryloxy or aryloxysulfonyl radical or a radical of the formula ##STR2## R.sub.3 is an unsubstituted or substituted alkyl or aryl radical; R.sub.4 is hydrogen or alkyl; and R.sub.5 and R.sub.6 are each independently hydrogen or an unsubstituted or substituted alkyl, cycloalkyl or aryl radical, with the proviso that R.sub.1 may not be hydrogen or halogen if R.sub.2 is an unsubstituted or substituted aryloxysulfonyl radical, a radical of the formula ##STR3## or the trifluoromethyl group, and the sulfo group is attached to the benzene ring of the indole radical, produce dyeings of good light- and wetfastness properties on polyamide material. In particular, the dyeings obtained have shade constancy when subjected to increases in temperature.

REFERENCES:
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patent: 1835393 (1931-12-01), Hentrick et al.
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patent: 3925350 (1975-12-01), Wolfrum et al.
patent: 3993619 (1976-11-01), Kruckenberg et al.
patent: 4000123 (1976-12-01), Sommer et al.
patent: 4060521 (1977-11-01), vor der Bruck et al.
patent: 4248774 (1981-02-01), Hugl et al.
patent: 4602084 (1986-07-01), Hurter

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