Azo dyes containing a 3-aminobenzothienoisothiazole diazo component
AssigneeCiba-Geigy Corporation
InventorRudolf Naef
Life of this patent
Estimating the term…
Abstract
Dyes of the formula ##STR1## where R and R.sub.1 are independently of the other hydrogen, halogen, nitro, alkyl or alkoxy and KK is the radical of a coupling component, which are particularly suitable for dyeing polyester fibers if no water-solubilizing group is present, and which are particularly suitable for dyeing and printing textile materials made of polyamide fibers when at least one sulfo group is present in the dye.
Claims7
A dye of the formula ##STR178## where R and R.sub.1 are independently of the other hydrogen, halogen, nitro, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.12 -alkyl which is unsubstituted or substituted by hydroxy, C.sub.1 -C.sub.4 -alkoxy, cyano or phenyl and KK is the radical of a coupling component.
Dependencies are inferred from the claim text.