Cationic oxazine dyes
AssigneeCiba-Geigy Corporation
InventorPeter Moser
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Abstract
There are described new blue cationic oxazine dyes of the formula ##STR1## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently of one another are each C.sub.1-4 -alkyl, with R.sub.1 and R.sub.2 together with the nitrogen atom also being able to form a heterocyclic ring, and X.sup..crclbar. is an anion; these dyes are distinguished in particular by an excellent migration capacity on polyacrylonitrile fibres.
Claims3
A cationic oxazine dye of the formula I ##STR12## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently of one another are each C.sub.1-4 -alkyl, with R.sub.1 and R.sub.2 together with the nitrogen atom also being able to form a heterocyclic ring, and X.crclbar. is an anion.
Dependencies are inferred from the claim text.