Organic compounds -- part of the class 532-570 series – Organic compounds – Azo
Patent
1985-05-14
1986-12-09
Higel, Floyd D.
Organic compounds -- part of the class 532-570 series
Organic compounds
Azo
106 23, 106288Q, 106308Q, 106309, 534573, 534577, 534581, 534705, 534737, 534738, 534767, 534768, 534693, 534728, C09B 29036, C09B 2952, C09B 4514, C09B 4522
Patent
active
046280820
ABSTRACT:
Azobarbituric acid derivatives characterized in that in their free acid form they have the following tautomeric structure are disclosed: ##STR1## The azobarbituric acid derivatives are characterized in that X and Y rings can each carry one or two substituents from the series comprising .dbd.O, .dbd.S, .dbd.NR.sub.7, --NR.sub.6 R.sub.7, --OR.sub.6, --SR.sub.6, --COOR.sub.6, --CN, --CONR.sub.6 R.sub.7, --SO.sub.2 R.sub.8, ##STR2## alkyl, cycloalkyl, aryl and aralkyl, the total number of the endocyclic and exocyclic double bonds for each of the rings X and Y being three.
The new azobarbituric acid derivatives are other than those of azobarbituric acid, azouracil and uracil-5-azobarbituric acid and their salts. The compounds are useful as pigments which pigments are useful for pigmented paints, in printing inks, distempers or emulsion paints, inter alia.
REFERENCES:
patent: 3862116 (1975-01-01), Toji
patent: 3869439 (1975-03-01), Schundehutte
patent: 4285861 (1981-08-01), Brode et al.
Lorenz Manfred
Schundehutte Karl H.
Bayer Aktiengesellschaft
Higel Floyd D.
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