Indole-containing disazo dyestuffs having a sulfatoalkyleneoxy-substituent
AssigneeBayer Aktiengesellschaft
InventorsRichard Sommer, Gerhard Wolfrum, Karl-Ludwig Moritz
Life of this patent
Estimating the term…
Abstract
Disazo dyestuffs which in form of the free acid correspond to the formula ##SPC1## Wherein A is an alkylene of 2-5 carbon atoms; R.sub.1, R.sub.2, and R.sub.3 are hydrogen, chloro, bromo, alkoxy, or alkyl; R.sub.4 is alkyl, phenyl, or substituted phenyl; R.sub.5 is hydrogen, alkyl, or alkyl substituted by cyano, carbonamido, or carboxyl; R.sub.6 is a substituent; B is 1,4-phenylene or 1,4-naphthylene; m is a number from 1 to 4; and n is a number from 0 to 2. These dyestuffs are useful for dyeing or printing natural or snythetic fibers containing amide groups, such as wool, silk or polyamide; and the resulting product is distinguished by good fastness properties.
Claims11
Disazo dyestuff which in the form of the free acid corresponds to the formula ##SPC25##
- wherein
- A is alkylene of 2-5 carbon atoms;
- B is 1,4-phenylene or 1,4-naphthylene;
- R.sub.1, r.sub.2, and R.sub.3 independently are hydrogen, chloro, bromo, alkyl of 1-4 carbon atoms, cyanoalkyl of 1-4 carbon atoms, alkoxy of 1-6 carbon atoms, or alkoxy of 1-6 carbon atoms substituted by hydroxy or phenyl;
- R.sub.4 is alkyl of 1-4 carbon atoms, phenyl., or phenyl substituted by halo, alkyl of 1-4 carbon atoms, or alkoxy of 1-4 carbon atoms;
- R.sub.5 is hydrogen, alkyl of 1-4 carbon atoms, or alkyl of 1-4 carbon atoms substituted by cyano, CONH.sub.2 of carboxy;
- R.sub.6 is alkyl of 1-4 carbon atoms alkoxy of 1-6 carbon atoms, chloro, bromo, or fluoro, nitro, sulfo, or cyano;
- m is a number from 1 to 4;
- and
- n is a number from 0 to 2.
Disazo dyestuff which in the form of the free acid corresponds to the formula ##SPC26##
- wherein
- A is alkylene of 2-5 carbon atoms;
- R.sub.1 ' is hydrogen, chloro, or methyl;
- R.sub.2 ' is hydrogen, chloro, methyl, ethyl, methoxy, or ethoxy;
- R.sub.3 ' is hydrogen, methoxy, or ethoxy;
- R.sub.4 ' is methyl or phenyl;
- R.sub.5 ' is hydrogen, alkyl of 1-4 carbon atoms or alkyl of 1-4 carbon atoms substituted by cyano, carbonamido, CONH.sub.2 or carboxyl;
- and
- m' is the number 1 or 2.
Disazo dyestuff which in the form of the free acid corresponds to the formula ##SPC27##
- wherein
- A is alkylene of 2-5 carbon atoms;
- R.sub.1 is hydrogen, chloro, bromo, alkoxy of 1-6 carbon atoms, or alkyl of 1-4 carbon atoms;
- R.sub.4 is alkyl of 1-4 carbon atoms or phenyl;
- R.sub.5 is hydrogen, alkyl of 1-4 carbon atoms, or alkyl of 1-4 carbon atoms substituted by cyano, carbonamido, CONH.sub.2 or carboxyl;
- and
- m is a number from 1 to 4.
Disazo dyestuff which in the form of the free acid corresponds to the formula ##SPC28##
- wherein
- R.sub.1 ' is hydrogen, chloro, or methyl;
- R.sub.4 ' is methyl or phenyl;
- R.sub.5 ' is alkyl of 1-4 carbon atoms or alkyl of 1-4 carbon atoms substituted by cyano, carbonamido, CONH.sub.2 or carboxyl;
- and
- m' is the number 1 or 2.
Dependencies are inferred from the claim text.