Abstract: A self-dispersible metal complex colorant is represented by formula 1, which has improved storage stability, may embody various colors and has improved fastness, such as light resistance, water resistance and the like: wherein each of A1 and A2 is independently a moiety which includes a substituted or unsubstituted C2-C30 alkenylene group having at least one double bond and is conjugated with an azo group; each of X1 and X2 is selected from the group consisting of a hydroxy group, a C1-C4 alkoxy group, a carboxyl group, and a substituted or unsubstituted amino group; M is a polyvalent transition metal; L is a neutral or anionic ligand; T is a mono- or poly-substituted hydrophilic functional group; n is an integer between 1 and 3; and J is a linker. The self-dispersible metal complex colorant may be used in various fields employing colors, such as fibers, foods, drugs, cosmetics, coatings, inks or ceramics.

Abstract: A metal complex colorant represented by formula 1 may embody various colors and has improved fastness, such as light resistance, water resistance and the like: wherein each of A1 and A2 is independently a moiety which includes a substituted or unsubstituted C2-C30 alkenylene group having at least one double bond and is conjugated with an azo group; each of X1 and X2 is selected from the group consisting of a hydroxy group, a C1-C4 alkoxy group, a carboxyl group, and a substituted or unsubstituted amino group; M is a polyvalent transition metal; L is a neutral or anionic ligand; n is an integer from 1 to 3; and J is a linker. The metal complex colorant may be used in various fields employing colors, such as fibers, foods, drugs, cosmetics, coatings, inks or ceramics.

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: Disclosed is a method of producing a disazo pigment, in which a coupling reaction is carried out while feeding, into an acidic aqueous solution, a tetrazo aqueous solution containing a tetrazo component of benzidines and a coupler aqueous solution containing a coupling component, wherein the coupling component is a mixture comprising a main component represented by the formula (1): CH3COCH2CONH—X, wherein X represents a phenyl group optionally having one or the same or different plural substituents selected from the group consisting of a methyl group, methoxy group and chlorine atom; a first additional component represented by the formula (2): CH3COCH2CONH—Y, wherein Y represents a phenyl group having a substituent selected from the group consisting of —CONR2 group, —SO2NR2 group and —NHCOR group, and the phenyl group may further have a substituent selected from the group consisting of a methyl group, methoxy group, chlorine atom, —CONR2 group, —SO2NR2 group and &mdas

Abstract: The invention provides a 1:2 metal complex in which at least one of the complexants is a polyazo compound of formula ##STR1## wherein --A.sub.1 --(CO).sub.p --OH signifies the radical of a diazo component of formula H.sub.2 N--A--(CO).sub.p --OH, in which the substituent --(CO).sub.p --OH is in ortho-position to the diazotizable amino group --NH.sub.2, --A-- is the ortho-bivalent radical and p signifies 0 or 1, or a modified derivative thereof,--X-- signifies an aromatic bivalent radical,--B.sub.1 signifies the radical of a coupling component HB, or a modified derivative thereof,m signifies 0 or 1,n signifies 0, 1 or 2and M signifies hydrogen or a cation, with the proviso that m+n=1 or 2,or a mixture of such complexes and to the use thereof as dyestuffs, in particular for the dyeing of a substrate dyeable with anionic dyes, especially of leather or pelts.

Abstract: 1:1 and 1:2 metal complexes comprising the unit of the formula ##STR1## wherein A and B, independently, are radicals of diazo or coupling components, with the proviso that when one of A and B is a radical of a diazo component, the other is a radical of a coupling component,T is --SO.sub.2 N(R.sub.1)-- or --N(R.sub.1)SO.sub.2 --, wherein R.sub.1 is hydrogen, C.sub.1-4 alkyl, C.sub.1-4 alkyl substituted by phenyl or carboxy or C.sub.2-4 alkyl substituted in the .beta.--, .gamma.-- or .delta.--position by phenoxy, C.sub.1-4 alkyl, chloro or hydroxy, with the proviso that T is --N(R.sub.1)SO.sub.2 -- when A is the radical of a diazo component and T is --SO.sub.2 N(R.sub.

Abstract: The novel compounds of the general formula I ##STR1## where A is a radical of a coupling or diazo component which, if necessary after conversion, is capable of complex formation, Ar is an unsubstituted or substituted aromatic or heterocyclic radical, D is a radical of a diazo component and Me is a Co.sup.2+, Cu.sup.2+, Zn.sup.2+, Mn.sup.2+ or Ni.sup.2+ ion, and the ring B can be further substituted, are very useful for dyeing cellulose fibers, polyesters and blends of cellulose fibers and polyesters.The present dyes are lightfast and fast to washing and to solvents.

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.