Abstract: Use of the mono-copper complex of a dye of formula (1) wherein Z1, Z2, R1, R2, R3, R4, X, n and m are as defined in the claims, and mixtures thereof with the bis-copper complex of such a dye, for dyeing natural and synthetic material.

Abstract: Metallized bisazo dyes of general formula (IX) or of general formula (X) wherein A, R1, R2, R3, M and Met are defined in the specification are excellent dyes for dying and printing cellulose containing materials and especially for the preparation of inks for ink jet printing.

Abstract: Dyestuffs of the formula (I) ##STR1## wherein R.sup.1 and R.sup.4 independently of one another represent an acyl radical,R.sup.2 and R.sup.3 independently of one another represent hydrogen or unsubstituted or substituted C.sub.1 -C.sub.4 -alkyl,X represents a bridge member which is not fibre-reactive andn and m independently of one another represent 1 or 2,are outstandingly suitable for dyeing and printing substrates containing hydroxyl and/or amide groups, in particular for printing paper by the ink-jet method.

Abstract: The present invention relates to a dye-containing light-polarizing film wherein a disazo dye represented by the formula (I) is used: ##STR1## wherein Me represents a transition metal, being copper, nickel, zinc or iron, R represents a 1-naphthol or 2-naphthol residue which is bonded to azo group at the position adjacent to its hydroxyl group forming a complex bond together with the transition metal and which may have a substituent such as a sulfonic acid, sulfonamide, amino, acylamino or arylamino group or a hydroxyl group not adjacent to the azo group, X and Y represent a hydrogen atom, a C.sub.1 -C.sub.4 alkyl, lower alkoxy, carboxylic acid, sulfonic acid, sulfonamide, sulfonalkylamide, amino, acrylamino or nitro group or a halogen atom, and Z represents a hydrogen atom or a C.sub.1 -C.sub.4 alkyl or lower alkoxy group, said formula (I) having from 1 to 3 sulfonic acid groups.

Abstract: This invention relates to disazo dyes, and their metal complexes, which are useful for dyeing cellulosic fibers in lightfast and washfast hues. In addition, these dyes have high water solubility, a high degree of fixation, acceptable migration and high water solubility with reasonable cost.The disazo dyes have the structure: ##STR1## Wherein: R is selected from ##STR2## Wherein the azo bonds are ortho to the --OH or NH.sub.2 groups;R.sub.1 is H, lower alkyl, lower alkoxy, or --CO.sub.2 M;R.sub.2 is H, lower alkyl, lower alkoxy, Cl;R.sub.3 is lower alkylene;R.sub.4 is H, --lower alkyl;R.sub.5 is H, lower alkyl, --CO.sub.2 M;R.sub.6 is OH or --NH.sub.2 ;R.sub.7 is H, --CH.sub.2 SO.sub.3 M;M is H, Na, Li, K, Mg, Ca, NH.sub.4 ; ##STR3## and n is 0, 1, 2.

Abstract: This invention is that of an improved process for preparing 1:1 copper complex disazo compounds which comprises treating a disazo compound of the following general formula (2): ##STR1## wherein: M is hydrogen or the equivalent monovalent or divalent metal andY is the vinyl group or CH.sub.2 --CH.sub.2 --Z wherein Z is a radical that can be eliminated by an alkaline agentwith a copper donor at a temperature from about 70.degree. to about 130.degree. C. and at a pH from about 3 to about 6. The compounds of the process of the invention are used as dyestuffs.

Abstract: Complexes of the formula ##STR1## or a water-soluble salt thereof each cation of which is independently a non-chromophoric cation, wherein X is chloro or hydroxy,m is 1 or 2, andn is 0 or 1, with the proviso that m + n is 2, with the proviso that one of the asterisked bonds is in the 1-position and the other asterisked bond is in the 2-position, and mixtures thereof, are useful for dyeing or printing hydroxy group- or nitrogen-containing organic substrates, preferably textile material consisting of or containing cellulose fibers, most preferably cotton, alone or blended with other suitable textile fibers. The resulting dyed or printed textile material may be aftertreated with a polymeric polybasic amino compound in order to improve the wet fastness of these dyeings and printings.

Abstract: Azo dyes of the formula ##STR1## and external salts thereof, wherein F is the residue of a monoazo or disazo compound in 1:1 metal complex form or of a trisazo, disazoazoxy or tetrakisazo compound in metal-free or 1:1 metal complex form,each X is independently --NR.sub.2 --Q--NR.sub.3 R.sub.4 or --NR.sub.2 --Q--N.sup..sym. R.sub.5 R.sub.6 R.sub.7,whereinQ is linear or branched C.sub.2-6 alkylene or --NH--CO--CH.sub.2 --,R.sub.2 is hydrogen or C.sub.1-4 alkyl,each of R.sub.3 and R.sub.4 is independently hydrogen; C.sub.1-6 alkyl; C.sub.2-6 alkyl monosubstituted by cyano or hydroxy in the 2-, 3-, 4-, 5- or 6-position; phenyl(C.sub.1-3 alkyl); phenyl(C.sub.1-3 alkyl) having, on the phenyl ring, 1, 2 or 3 substituents selected from chloro, C.sub.1-4 alkyl and C.sub.1-4 alkoxy; C.sub.5-6 cycloalkyl or C.sub.5-6 cycloalkyl substituted by 1, 2 or 3 C.sub.1-4 alkyl groups or --NR.sub.3 R.sub.

Abstract: Use of mono-copper complexes of dyestuffs of the formula ##STR1## wherein X is H or SO.sub.3 H andR is H, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, carboxyl, halogen or sulpho,and of mixtures thereof with the bis-copper complexes of (II) in amounts of up to 50% by weight, for dyeing natural and synthetic materials, in particular cellulose materials, leather, wool and polyamide.