Crystalline bromide or iodide salts of triazole dyes for polyacrylonitrile
AssigneeCiba-Geigy Corporation
InventorsRudolf Zink, Peter Loew
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Abstract
There are described novel crystalline bromine and iodine salts of triazole dyes of the formula ##STR1## wherein R is the CH.sub.3 or C.sub.2 H.sub.5 group, R.sub.1 is a C.sub.1 -C.sub.4 -alkyl group, R.sub.2 is an unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl group, and X is the bromine or iodine ion, and also processes for producing them, and their use for dyeing and printing in particular polyacrylonitrile materials.
Claims9
A crystalline salt of a triazole dye of the formula
- wherein
- R is the CH.sub.3 or C.sub.2 H.sub.5 group,
- R.sub.1 is a C.sub.1 -C.sub.4 -alkyl group,
- R.sub.2 is an unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl group, and
A process for producing a triazole dye, comprising the step of reacting an alkylsulfate salt of the formula ##STR18## with hydrobromic acid or hydriodic acid, or with an ammonium, alkali metal or alkaline-earth metal salt thereof, to give a triazole dye of the formula ##STR19## wherein, in both formulas above, R is the CH.sub.3 or C.sub.2 H.sub.5 group,
- R.sub.1 is a C.sub.1 -C.sub.4 -alkyl group,
- R.sub.2 is an unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl group, and
- X is the bromine or iodine ion.
A process of dyeing or printing a textile which is dyeable with cationic dyes, comprising the step of contacting the textile with a dye of the formula ##STR20## wherein R is the CH.sub.3 or C.sub.2 H.sub.5 group,
- R.sub.1 is a C.sub.1 -C.sub.4 -alkyl group,
- R.sub.2 is an unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl group, and
- X is the bromine or iodine ion.
Dependencies are inferred from the claim text.