Pigments containing pyrazolo quinazolone radicals

Details Pigments containing pyrazolo quinazolone radicals Pigments containing pyrazolo quinazolone radicals

1979-10-10

1981-10-13

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

106 23, 106288Q, 106308M, 106308Q, 260205, 544252, C09B 2901, C09B 2952, C09B 35233, C09B 3526

Patent

active

042947553

ABSTRACT:
Azo compounds of the general formula ##STR1## where D is the radical of a diazo component of the aminoanthraquinone or aminophthalimide series, or the radical of a tetraazo component H.sub.2 N--D--NH.sub.2 having the formula: ##STR2## where Z is a direct bond, SO.sub.2, NH, CO, SO.sub.2 NH, CONH, NHCONH or NHCOCONH and the rings B are unsubstituted or substituted by Cl, Br, CH.sub.3, NO.sub.2 or OCH.sub.3 ; wherein said radical D is free from complex-forming hydroxyl and carboxyl groups and from ionic groups, n is 1 or 2, R is hydrogen or an aromatic radical, X is hydroxyl, alkyl, a carboxylic acid ester group, unsubstituted or substituted aryl or acylamino, and the ring A may be substituted but is free from SO.sub.3 H groups, are exceptionally suitable for use as pigments, for example for coloring surface coatings, printing inks or plastics.

REFERENCES:
patent: 3167537 (1965-01-01), Menzel et al.
patent: 3316238 (1967-04-01), Hanke et al.
patent: 4053463 (1977-10-01), Junge

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