Bayer Aktiengesellschaft

Aloysius Engel

Hermann Henk

Herbert Hugl

Klaus Wehling

Stefan Ehrenberg

Fibre-reactive dyestuffs based on barbituric acid, of the following formula ##STR1## wherein the substituents have the meaning given in the description, are distinguished by improved properties.

Reactive dyestuffs based on a substituted barbituric acid

2-Hydrazono-4,6-dinitrobenzthiazolones of the formula ##STR1## in which X.sub.1 represents hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -hydroxyalkyl, C.sub.1 -C.sub.4 -sulphoalkyl or C.sub.1 -C.sub.4 -sulphatoalkyl, and

2-hydrazono-4,6-dinitrobenzthiazolones useful to form dyestuffs and as

Basic azo dyestuffs of the general formula ##STR1## and tautomers thereof, in which D is the radical of a diazo or tetrazocomponent free of anionic groups,

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Leverkusen, Germany

Aloysius Engel