Monoazo compounds derived from 3-nitro-4-amino-benzoates and 5-(

Details Monoazo compounds derived from 3-nitro-4-amino-benzoates and 5-( Monoazo compounds derived from 3-nitro-4-amino-benzoates and 5-(

1980-06-23

1985-11-26

Higel, Floyd D.

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

Organic compounds

Azo

106 23, 106288Q, 106308Q, 106309, 106311, 526219, 162162, C09B 2901, C09B 2915, D06P 144, D06P 324

Patent

active

045555680

ABSTRACT:
When diazotizing lower alkyl esters of 3-nitro-4-aminobenzoic acid and coupling them onto 5-(2'-hydroxy-3'-naphthoylamino)-benzimidazolone-(2) which may be substituted in 6'-position by chlorine or bromine, in 1-position by methyl or ethyl and in the benzo-nucleus by chlorine, bromine, methyl, ethyl, methoxy or ethoxy, and such as further illustrated by a representative formula ##STR1## wherein R is alkyl of 1 to 4 carbon atoms, X is hydrogen, chlorine, bromine, methyl, ethyl, methoxy or ethoxy, Y is hydrogen, methyl or ethyl, and Z is hydrogen, chlorine or bromine. Colorants are obtained which are especially useful for pigmenting plastics, spinning masses, printing inks, varnishes and paints. The dyeings obtained therewith are fast to light, weathering, solvents and migration, especially fast to overvarnishing and bleeding.

REFERENCES:
patent: 3124565 (1964-03-01), Schilling et al.
patent: 4182708 (1980-01-01), Landler et al.

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