Sulfoethylaminosulfonyl substituted disazo dyes
AssigneeCiba-Geigy Corporation
InventorsAlfred Fasciati, Arthur Buhler
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Abstract
The invention provides novel symmetrical and unsymmetrical disazo dyes which in the form of the free acid have the formula I ##STR1## wherein each R independently of the other represents hydrogen or an alkyl group of 1 to 4 carbon atoms, each R.sub.1 independently of the other represents hydrogen, the methyl, ethyl, hydroxyethyl or cyanoethyl radical, but especially hydrogen, each X independently of the other represents hydrogen, halogen, an alkyl or alkoxy group, each of 1 to 4 carbon atoms, each Y independently of the other represents hydrogen or an alkoxy group of 1 to 4 carbon atoms, each Z independently of the other represents hydrogen, an acylamino group or an alkyl or alkoxy group, each of 1 to 4 carbon atoms, and B represents an acyl radical.
Claims7
A disazo dye which in the form of the free acid has the formula I ##STR39## wherein each R independently of the other represents hydrogen or alkyl of 1 to 4 carbon atoms,
- each R.sub.1 independently of the other represents hydrogen, methyl, ethyl, hydroxyethyl or cyanoethyl,
- each X independently of the other represents hydrogen, halogen, or alkyl or alkoxy each of 1 to 4 carbon atoms,
- each Y independently of the other represents hydrogen or alkoxy of 1 to 4 carbon atoms,
- each Z independently of the other represents hydrogen, acylamino or alkyl or alkoxy each of 1 to 4 carbon atoms, and
- B represents carbonyl or thiocarbonyl.
Dependencies are inferred from the claim text.