Abstract: Disazo dyestuffs, which in the form of the free acid, have the formula ##STR1## wherein R.sub.1 is an aromatic radical, an aliphatic radical with 1-4 C atoms or a dialkylamino radical;R.sub.2 is chlorine, bromine, alkoxy or alkyl;R.sub.3 and R.sub.4 are hydrogen, chlorine, bromine, alkoxy group or alkyl;R.sub.5 and R.sub.6 are hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy;R.sub.7 is C.sub.1 -C.sub.4 -alkyl;B is a 1,4-phenylene, 1,4-naphthylene or tetrahydro-1,4-naphthylene radical; andm is 0, 1 or 2;Are disclosed. The resulting dyestuffs are used for the dyeing fibers containing of amide groups, for example those of wool, silk and polyamide, such as poly-.epsilon.-caprolactam or the reaction product of hexamethylene-diamine with adipic acid. The resulting dyeings, especially those on polyamide materials, are distinguished by good fastness properties, especially by good wet fastness properties and good light fastness properties.

Abstract: Disazo dyestuff which in the form of the free acid correspond to the formula ##STR1## in which W stands for the radical ##STR2## or the radical ##STR3## R.sub.1 stands for hydrogen, an alkyl radical or a phenyl group; R.sub.2 and R.sub.3, independently of one another, stand for hydrogen, halogen, an alkyl group, an alkoxy group or an acylamino group; R.sub.4 stands for hydrogen, halogen, an alkyl group, an alkoxy group or an acylamino group; R.sub.5 stands for hydrogen, an alkyl group or an alkoxy group; R.sub.6 and R.sub.7, independently of one another, stand for hydrogen, hydroxy, cyano, halogen, acyloxy, alkoxycarbonyl or phenyl; X stands for an alkylene radical with 1 - 4 carbon atoms; R.sub.8 stands for an alkyl, phenyl, 2-naphthyl or 4-biphenyl group which is not further substituted; R.sub.9 stands for hydrogen or an alkyl group with 1 - 6 carbon atoms which may be substituted by a nitrile, carboxamide or carboxyl group; R.sub.10 stands for a substituent; and n stands for the numbers 0 - 2.

Abstract: Dyestuffs of the formula ##STR1## wherein B represents a 1,4-phenylene, 5,6,7,8-tetrahydro-1,4-naphthylene or 1,4-naphthylene radical,R.sub.1 represents an aromatic, aliphatic or dialkylamino radical,R.sub.2 represents chlorine, bromine, an alkyl group or an alkoxy group,R.sub.3 and R.sub.4 represent hydrogen, chlorine, bromine, an alkoxy group or an alkyl group,R.sub.5 and R.sub.6 represent hydrogen, an alkyl group with 1-4 C atoms or an alkoxy group with 1-4 C atoms,R.sub.7 represents ##STR2## R.sub.8 and R.sub.10 represent hydrogen or methyl, R.sub.9 represents methyl, ethyl, phenyl, hydroxymethyl, C.sub.1 -C.sub.4 -alkoxymethyl, benzyloxymethyl, C.sub.1 -C.sub.4 -alkylcarbonyloxymethyl or C.sub.2 -C.sub.4 -alkenylcarbonyloxymethyl, the radical OR.sub.7 is in the o- or p-position relative to the azo bridge, andm represents a number from 0 to 2,Are suitable for dyeing and printing natural and synthetic fibre materials containing amide groups.

Abstract: Monoazo dyestuffs which in the form of the free acid correspond to the general formula ##STR1## wherein R.sub.0, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6 and R.sub.7 have the meaning given in the description and their use for the dyeing of natural and synthetic fibre materials, especially for dyeing polyamide fibres. Dyeings obtained distinguish themselves by very good fastness to light. Dyestuffs are absorbed well on polyamide fibres already in a neutral to weakly acid dye bath. By polyamide fibres there are here especially understood those from synthetic polyamides such as .EPSILON.-polycaprolactam, or condensation products of adipic acid and hexamethylenediamine.

Abstract: Dyestuffs of the formula ##SPC1##WhereinR.sub.1 denotes H, NO.sub.2, CN, ##EQU1## or COOR.sub.10, R.sub.2 denotes H, alkyl, alkoxy, aryl, halogen or NO.sub.2,R.sub.3 denotes H, halogen, alkyl, alkoxy, aryl or ##EQU2## R.sub.4 denotes H, alkyl or --SO.sub.2 --aryl, R.sub.5 denotes H, halogen, alkyl, aryl or alkoxy,R.sub.6 denotes H or alkyl,R.sub.7 denotes alkyl, aryl or dialkylamino andR.sub.8 and R.sub.9 denote H, alkyl, aryl, aralkyl or hetaryl or can, together with the N atom, form the radical of a heterocyclic structure,R.sub.10 denotes alkyl andn denotes 1 or 2,The OR.sub.4 radical is in the ortho-position or paraposition relative to the azo group andThe --SO.sub.2 --NH--SO.sub.2 --R.sub.7 -- radical is present in place of R.sub.1 in the ring A or in place of R.sub.3 in the ring B.sub.1are suitable for dyeing and printing natural and synthetic fibrous materials containing amide groups.

Abstract: Exhaust process for the dyeing of synthetic fiber materials from organic water-immiscible solvents wherein are used as dyestuffs dis- and trisazo dyestuffs which contain at least 2 hydroxyl groups and which are free from sulfonic acid and carboxyl groups and which correspond to the formulaA--N=N--B--N=N--Din which A, D and B have the meaning given below in the disclosure. By means of these dyestuffs there are obtained dyeings in excellent dyestuff yields and fastness properties.

Abstract: Disazo dyestuffs of the formula ##SPC1##WhereinR.sub.1 represents an aromatic radical, an aliphatic radical with 1-4 C atoms or a dialkylamino radical in which the alkyl groups contain 1-4 C atoms,R.sub.2 represents chlorine, bromine, an alkyl group with 1-4 C atoms, an alkoxy group with 1-4 C atoms or a hydroxyl group,R.sub.3 represents hydrogen, chlorine, bromine, an alkyl group with 1-4 C atoms, an alkoxy group with 1-4 C atoms or an aryloxy group,R.sub.4 represents hydrogen, chlorine, bromine, an alkyl group with 1-4 C atoms, an alkoxy group with 1-4 C atoms or an acylamino group,R.sub.5 represents hydrogen or an alkyl group,R.sub.6 represents an alkyl group,n represents the numbers 0, 1 and 2 andB represents a radical of the formula ##SPC2##Are suitable for dyeing synthetic fiber materials, especially those of polyamides.

Abstract: Disazo dyestuffs free of sulfonic acid groups of the formula ##SPC1##Are disclosed in which R.sub.1 is phenyl, alkyl phenyl or C.sub.1 -C.sub.4 -alkyl; R.sub.2 is chlorine, bromine, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy; R.sub.3 and R.sub.4 which can be either identical or different, are hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy; R.sub.5, R.sub.6 and R.sub.7, which can be either identical or different, are hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, halogen, carboxylic amide, carboxyl, or carboxylic ester; Y is hydroxyl or NR.sub.8 R.sub.9 ; R.sub.8 and R.sub.9 can be identical or different and are C.sub.1 -C.sub.4 -alkyl optionally substituted by hydroxyl or nitrile, or benzyl; and n is 0, 1 or 2. The dyestuffs are used in dyeing N-containing fiber materials.

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.

Abstract: Dyestuffs of the formula ##SPC1##In whichR.sub.1 represents an aromatic radical, an aliphatic radical with 1-4 C atoms or a dialkylamino radical in which the alkyl groups contain 1-4 C atoms,R.sub.2 represents chlorine, bromine, an alkoxy group or an alkyl group,R.sub.3 and R.sub.4 represent hydrogen, chlorine, bromine, an alkoxy group or an alkyl group,R.sub.5 represents hydrogen, chlorine, bromine, fluorine, a phenyl group, an alkyl group with 1-4 C atoms or an alkoxy group with 1-4 C atoms,R.sub.6 represents hydrogen, an alkyl group with 1-4 C atoms or an alkoxy group with 1-4 C atoms,R.sub.7 represents an arylsulphonyl radical,B represents a 1,4-phenylene, a 1,4-naphthylene or a tetrahydro-1,4-naphthylene radical andm represents a number from 0 to 2,Are suitable for dyeing synthetic fibre materials, especially polyamide fibre materials.