Trisazo dyes

Details Trisazo dyes Trisazo dyes

1987-10-29

1990-08-28

Higel, Floyd D.

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

Organic compounds

Azo

25229968, 534582, 534596, 534601, 534754, 534809, 534831, 534832, 534807, C07C10704, C07C10700, C09B 3116, C09K 1924

Patent

active

049526782

ABSTRACT:
Trisazo dyes of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different and each, independently of the others, is hydrogen, methyl, ethyl, methoxy or chlorine, R.sup.5 is C.sub.2 -C.sub.4 -alkyl, X is C.sub.1 -C.sub.24 -mono- or dialkylamino, monobenzylamino, mono-(phenyl-ethyl)-amino, monophenylamino, N-(C.sub.1 -C.sub.12 -alkyl)-N-benzylamino, N-(C.sub.1 -C.sub.12 -alkyl)-N-(phenylethyl)amino or N-(C.sub.1 -C.sub.12 -alkyl)-N-phenylamino or each of the phenyls substituted by C.sub.1 -C.sub.12 -alkyl, cyclo-hexyl, 4-(C.sub.1 -C.sub.12 -alkyl)cyclohexyl, C.sub.1 -C.sub.24 -alkyloxy, phenoxy or C.sub.1 -C.sub.24 -alkanoyloxyl, or is OR, where R is C.sub.1 -C.sub.24 -alkyl, unsubstituted or C.sub.1 -C.sub.12 -alkyl-, cyclohexyl-, 4-(C.sub.1 -C.sub.12 -alkyl)cyclohexyl-, C.sub.1 -C.sub.24 -alkoxy-, phenoxy- or C.sub.1 -C.sub.24 -alkanoyl-oxy-substituted benzyl or phenylethyl, and A is a radical of the formula ##STR2## where R and X each have the above-mentioned meanings, and R.sup.6 is hydrogen or C.sub.1 -C.sub.14 -alkyl, R.sup.7 is hydrogen, methyl, ethyl, methoxy or chlorine, R.sup.8 is hydrogen, methyl, hydroxy or C.sub.1 -C.sub.8 -alkoxy and R.sup.9 is hydrogen or methyl, or the rings B, or B and C being benzofused, are used in liquid crystalline media and for dyeing synthetic polymers.

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