Triazinyl dyes
AssigneeCiba-Geigy Corporation
InventorHans Altermatt
Life of this patent
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Abstract
Vat dyestuffs of the formula ##EQU1## wherein R represents alkyl with 1 to 4 carbon atoms, R.sub.1 and R.sub.2 represent hydrogen or alkyl with 1 to 4 carbon atoms and each of A.sub.1 and A.sub.2 represents a vattable radical with 3 to 7 condensed rings are characterized by improved resistance to alkali and are suitable for dyeing and printing the most diverse materials, in particular fibers made from natural or regenerated cellulose.
Claims3
A vat dyestuff of the formula ##EQU2## wherein R is alkyl with 1 to 4 carbon atoms, R.sub.1 and R.sub.2 each is independently hydrogen or alkyl with 1 to 4 carbon atoms and A.sub.1 and A.sub.2 each is independently anthraquinonyl which is optionally substituted by halogen, lower alkyl, lower alkoxy, lower alkanoyl, amino, phenylamino, benzoylamino, halobenzoylamino, phenylbenzoylamino, N,N-diloweralkyl-sulphamidobenzoylamino, lower alkylphenylsulphonylamino and phenylthio, phthaloylacridonyl which is optionally substituted by halogen and trifluoromethyl, benzanthronyl which is optionally substituted by lower alkyl, isothiazolanthronyl, phenylanthrapyrimidinyl and 4-(benzoylaminoanthraquinonyl)-6-lower alkylthio-s-triazin-(2)-yl-amino-1,1'-dianthrimide-2,2'-carbazole.
Dependencies are inferred from the claim text.