Monoazo and diazo colorants from aminoalkylanilines and bis(amin

Details Monoazo and diazo colorants from aminoalkylanilines and bis(amin Monoazo and diazo colorants from aminoalkylanilines and bis(amin

1977-08-04

1979-05-08

Warren, Charles F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260163, 260176, 260197, 260208, 2605708R, 2605709, C09B 2910, C09B 2938, C09B 3310, C09B 3316

Patent

active

041535987

ABSTRACT:
Water-insoluble azo dyestuffs of the formula ##STR1## AND WATER-SOLUBLE ACID ADDITION SALTS THEREOF USEFUL FOR COLORING NATURAL FIBERS, SYNTHETIC FIBER-FORMING MATERIAL AND CELLULOSIC MATERIALS AS WELL AS IN THE MANUFACTURE OF PAPER, VARNISHES, INKS, COATINGS AND PLASTICS IN WHICH A represents an azoic coupling radical derived from a coupling component selected from the group consisting of arylides of hydroxysubstituted carbocyclic aromatic carboxylic acids, 1-aryl-5-hydroxypyrazoles, 6-amino-1-naphthol-3-sulfonic acid, and compounds having an enolizable ketomethylene group of the formula ##STR2## R is hydrogen, lower-alkyl, lower-alkoxy or halogen; R.sup.2 is hydrogen, lower-alkyl, lower-alkoxy, halogen, aminomethyl or 2-aminoethyl with the proviso that A is other than .beta.-naphthol when R.sup.2 is aminomethyl or 2-aminoethyl; R.sup.1 and R.sup.3 are the same or different and are each hydrogen, lower-alkyl, lower-alkoxy, halogen or aminomethyl with the proviso that at least one of R.sup.1 and R.sup.3 is aminomethyl when R.sup.2 is other than aminomethyl or 2-aminoethyl; and n represents an integer whose value is 1 or 2 and corresponds to the number of azo linkages, which dyestuffs are obtained by coupling a diazotized amine of the formula ##STR3## in which R, R.sup.1, R.sup.2 and R.sup.3 are as defined above with said coupling component.

REFERENCES:
patent: 1159375 (1915-11-01), Gunther
patent: 2128255 (1938-08-01), Krzikalla et al.
patent: 2128256 (1938-08-01), Kazikalla et al.

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