Abstract: A process for making a colored article of manufacture is disclosed. Accordingly an article of manufacture is first prepared of a material selected from the group consisting of metal, wood, glass, ceramic, masonry and polymeric materials. A polymeric coating (superstrate) is then applied to at least a portion of the surface of the article. At least a portion of the superstrate is brought into contact with a material system that contains (i) water, (ii) a carrier, (iii) a dye and (iv) a diol, under conditions calculated to bring about diffusion of said dye into said superstrate.

Abstract: The invention relates to a process for mass dyeing of polyacrylonitrile, wherein there is incorporated into a solution of acrylonitrile polymer or copolymer a pigment preparation which comprises 10 to 60% by weight of a pigment, 15 to 85% by weight of a glycol-based solvent, 5 to 25% by weight of a surfactant, and 0 to 10% by weight of customary additives, the percentages being based on the total weight of the pigment preparation.

Abstract: The invention relates to a process for mass dyeing of polyacrylonitrile, wherein there is incorporated into a solution of acrylonitrile polymer or copolymer a pigment preparation which comprises 10 to 60% by weight of a pigment, 15 to 85% by weight of a glycol-based solvent, 5 to 25% by weight of a surfactant, and 0 to 10% by weight of customary additives, the percentages being based on the total weight of the pigment preparation.

Abstract: The present invention is directed to processes for colorization of molded articles made from engineering plastics. In particular, the processes are used to colorize ice skate blade holders and goalie skate cowlings.

Abstract: The present invention relates to a method of protecting organic material, especially from the pharmaceutical, food and nutrition sectors, from light, which method comprises applying to or incorporating in a carrier material a combination of the dye of formula (1) the dye of formula (2) and a UV absorber and, optionally, further dyes, and positioning the so-treated carrier material between the light source and the organic material to be protected

Abstract: In the method of the present invention a plastic article (e.g., a molded article of thermoplastic polycarbonate) is immersed at least partially in a dye bath which includes one or more dyes, water, at least one carrier, and at least one diol. The dye bath contains: (i) at least one dye (e.g., a static and/or photochromic dye); (ii) water; (iii) at least one carrier represented by the following general formula I, R—O—(CH2)n—OHI wherein R is a radical selected from linear or branched C1–C18 alkyl, benzyl, benzoyl and phenyl, and n is 2 or 3; and (iv) a diol selected from at least one of linear or branched C2–C20 aliphatic diols, poly(C2–C4 alkylene glycol), cycloaliphatic diols having from 5 to 8 carbon atoms in the cyclic ring, monocyclic aromatic diols, bisphenols and hydrogenated bisphenols. In an embodiment of the present invention, the carrier is ethyleneglycol butyl ether, and the diol is diethylene glycol.

Abstract: A process for tinting a molded article is disclosed. The process entails applying by spraying or by flow coating a hot, dye-solution onto at least a portion of the surface of a molded article to obtain a tinted article and washing the tinted article. In addition to the dissolved dye, the dye solution that is substantially free of particulate matter contains an aqueous solution of a carrier and an optional emulsifier. The article is one molded of a thermoplastic molding composition. In an embodiment of the invention, the dye solution is prepared by filtering a hot aqueous solution through a bag filter that contains a dye to obtain a hot, dye-solution. In a further embodiment, activated carbon is used to purify the dye solution to obtain a dye-free aqueous solution.

Abstract: Hair dyeing composition on the basis of an oxidation dyestuff precursor reacting with peroxide, comprising at least one developing and/or coupling substance selected from the group a) 3-chloro-p-aminophenol and/or 2-chloro-p-aminophenol, b) 2-methyl-5-aminophenol, 2-methyl-5-hydroxyethyl aminophenol, 2-methyl-5-?-hydroxypropyl aminophenol, 2-methyl-5-methyl aminophenol, 2-methyl-5-ethyl aminophenol, 2-methoxy-5-aminophenol, 2-methyl-4-methoxy-5-aminophenol and/or 2-methyl-4-methoxy-5-hydroxyethyl aminophenol and c) 1-methoxy-2,4-diaminobenzene, 1-?-hydroxyethyloxy-2,4-diaminobenzene, 1-(1,2-dihydroxypropyloxy)-2,4-diaminobenzene, 1-methoxy-2-amino-4-?-hydroxyethyl aminobenzene, 1,3-bis-(2,4-diaminophenoxy)-propane, 2,4-diamino-5-methyl-phenetol and/or 1-?-hydroxyethyloxy-5-methyl-2,4-diaminobenzene.

Abstract: A process of dyeing a molded article is disclosed. The process entails immersing at least a portion of the article in a dyeing bath, retaining the portion in the bath for a period of time sufficient to allow an amount of dye to diffuse into the article, and removing said article from the bath. The molded article comprises a polymeric resin such as (co)polyester, (co)polycarbonates, acrylonitrile-butadiene-styrene, polyamide, polyurethane, polyalkyl(meth)-acrylate, allyldiglycol carbonate and styrene copolymers. The dyeing bath contains in addition to dye, water, a plasticizing agent and a leveling agent.

Abstract: A process for tinting of articles molded from a polymeric resin is disclosed. Preferably, the article is molded from polycarbonate and the process entails immersing the molded article in a dye bath that contains water, dye, a carrier and an optional surfactant. The carrier is a compound conforming to R1[—O—(CH2)n]mOR2  (i) wherein R1 and R2 independently denote H or C1-18 alkyl, benzyl, benzoyl or phenyl radical which may be substituted in the aromatic ring by alkyl and or halogen, preferably R1=butyl, R2=H, n is 2 or 3 and m is 2 to 35. The method is especially useful in the manufacture of tinted lenses.

Abstract: A process of dyeing a molded article is disclosed. The process entails immersing at least a portion of the article in a dyeing bath, retaining the portion in the bath for a period of time sufficient to allow an amount of dye to diffuse into the article, and removing said article from the bath. The molded article comprises a polymeric resin such as (co)polyester, (co)polycarbonates, acrylonitrile-butadiene-styrene, polyamide, polyurethane, polyalkyl(meth)acrylate, allyldiglycol carbonate and styrene copolymers. The dyeing bath contains in addition to dye, water, a plasticizing agent and a leveling agent.

Abstract: A coding scheme to identify the connections an optical fiber is to form in an optical assembly is provided. The coding scheme consists of a series of colors, typically four, provided along the fiber length. The combination of colors identifies the connection the fiber is to form. Colors are transferred to the optical fiber by sublimation of the dye at a relatively low temperature. The sublimed dye then diffuses into the outer coating of the optical fiber.

Abstract: Dibenzonaphthyrone of formula (I) wherein A1 and A2 independently of each other are unsubstituted or mono- to tetra-substituted o-C6-C18arylene, with the proviso that formula (I) does not represent a dibenzonaphthyrone of the formula The invention further relates to processes for the preparation thereof, to the use thereof for colouring/pigmenting high-molecular-weight organic material and to substance compositions comprising dibenzonaphthyrones.

Abstract: There has been found1) a method for reducing the toxicity of spent liquors from dyeing with cationic dyes or mixtures thereof, characterized by the step of dyeing with cationic dyes having a computed electrostatic shielding energy (idealized hydration energy) of .gtoreq.50 kcal/mol,2) cationic, generally low toxicity dyes, their preparation and use for dyeing.

Abstract: Dyestuffs of the formula (I) ##STR1## wherein Z represents SO.sub.2 or CO,A represents optionally substituted alkyl or aryl andp denotes 1 or 2,which are particularly suitable for the bulk dyeing of plastics, in particular thermoplastics, have been found.

Abstract: Cationic 1,3,4-thiadiazole dyestuffs of the formula ##STR1## in which the symbols used have the meaning given in the description, corresponding anhydrobases, processes for the preparation of the cationic 1,3,4-thiadiazole dyestuffs, their use for dyeing and printing various materials and as dichroic dyestuffs in polarizing films, and various materials which comprise such dyestuffs.

Abstract: Water-insoluble azo colorants, their preparation and use The invention relates to monoazo and disazo compounds of the formula (I) ##STR1## in which D is the radical of a carbocyclic or heterocyclic diazo or bisdiazo component, R.sup.1 and R.sup.2, independently of one another, are each a substituted or unsubstituted aryl or heteroaryl radical, X.sup.1 and X.sup.2, independently of one another, are each ring-forming ether oxygen or a substituted or unsubstituted imide grouping and n has the value 0 or 1, in which rings A and B, independently of one another, can each be additionally substituted and/or carry substituted or unsubstituted fused rings.These new compounds of the formula (I) are obtained by coupling diazotized amines or diamines of the type D--NH.sub.2 or H.sub.2 N--D--NH.sub.2 with (benzoxazol-2-yl)- or (benzimidazol-2-yl)-arylacetamides.Depending on the presence and length of alkyl chains, the compounds of the formula (I) are suitable for use as pigments, disperse dyes or oil-soluble dyes.

Abstract: There are described rhodamine derivatives of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each hydrogen or substituted or unsubstituted C.sub.1 -C.sub.4 -alkyl, or R.sup.2 is paired off with R.sup.5 or R.sup.4 with R.sup.6 to form 1,3-propylene, which can be substituted,R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are each hydrogen or methyl,R.sup.9 is hydrogen, substituted or unsubstituted C.sub.1 -C.sub.4 -alkyl or a radical of the formula (C.sub.2 H.sub.4 O--).sub.n H, where n is 2 or 3, andAn.sup..crclbar. is the equivalent of an anion derived from an addition or condensation polymer that contains acid groups, novel cyclic rhodamine dyes, and the use of the novel rhodamine derivatives and cyclic rhodamine dyes for dyeing polyacrylonitrile fibers, for incorporation into polymers or for preparing inks.

Abstract: The process for chemically modifying metal-free, organic material for improving one or more properties thereof such as water dispersibility, compatibility with other organics, or increased chemical reactivity, wherein the process includes providing material with from 1-6 sulfonylhalide groups or sulfonate ester groups or mixtures thereof, and contacting the material under sulfonamido forming conditions with one or more reactants containing one or more poly(oxyalkylene) moieties, each of the reactants having from 1 to 4 functional amine groups, and each of the poly(oxyalkylene) moieties being comprised of from about 4 to about 200 epoxide reactant residues at least about 50 mole percent of which residues contain 2-4 carbons.

Abstract: Metal-free compounds of the formula ##STR1## 1:1 and 1:2 metal complexes thereof, and acid addition salts of metal-free compounds of said formula and 1:1 and 1:2 metal complexes thereof, whereinB is hydrogen; C.sub.1-4 alkyl; C.sub.1-4 alkyl monosubstituted by C.sub.1-4 alkoxy; C.sub.2-4 alkyl substituted by hydroxy; C.sub.5-6 cycloalkyl; C.sub.5-6 cycloalkyl substituted by 1 to 3 C.sub.1-4 alkyl groups; phenyl(C.sub.1-3 alkyl); phenyl(C.sub.1-3 alkyl) the phenyl group of which is substituted by 1 to 3 substituents selected from C.sub.1-4 alkyl, C.sub.1-4 alkoxy and halo; --A--NH--R.sub.2 ; --A'.sub.4 --N(R.sub.7).sub.2 ; --A.sub.4 --N.sup..sym. (R.sub.8).sub.2 R.sub.9 A.sup..crclbar. or --N(R.sub.7).sub.2,R is hydrogen; C.sub.1-4 alkyl; C.sub.5-6 cycloalkyl; C.sub.5-6 cycloalkyl substituted by 1 or 2 C.sub.

Abstract: Azo compounds of the formula I ##STR1## wherein X is --H, --CH.sub.3, --CF.sub.3, --NO.sub.2, --COOR.sub.1, --NHCOR.sub.2 or --COHN.sub.2, and R.sub.1 and R.sub.2 are as defined in claim 1, are suitable for pigmenting high-molecular organic material.

Abstract: A waterless dye composition for apparel and other articles, made from thermoplastic materials, comprises an aliphatic polyester of a higher alkanoic acid and a polyol, of the formula (ACOO).sub.2-6 B, wherein A is alkyl of 8-22 carbon atoms and B is the residue of a polyhydric alcohol, other than glycerol, of 2-6 hydroxyl groups and an organic colorant. The compositions can further comprise an aromatic polyester of the formula C.sub.6 H.sub.z' --COOR.sub.1).sub.z, wherein z is 3, 4, 5, or 6; z' is 6-z; and R.sub.1 is higher alkyl; and/or a cycloaliphatic diester of the formula ##STR1## wherein R is substituted or unsubstituted straight or branched chain alkyl of 4-20 carbon atoms, polyoxyalkylene of the formula HO(C.sub.x H.sub.y O).sub.n C.sub.x H.sub.y --or phosphated polyoxyalkylene of the formula (HO).sub.2 P(.dbd.O)O(C.sub.x H.sub.2x O).sub.n C.sub.x H.sub.2x or a salt thereof, wherein (C.sub.x H.sub.2x O).sub.n is (CH.sub.2 CH.sub.2 O).sub.n, (C.sub.3 H.sub.6 O).sub.n or (CH.sub.2 CH.sub.2 O).sub.p (C.

Abstract: A material is, herein disclosed for collecting radionuclides and heavy metals that comprises an acrylic fiber element having MnO.sub.2 and/or ferrocyanide compound of the formula K.sub.2 M.sup.II [Fe(CN).sub.6 ] (wherein M.sup.II is a divalent metal such as cobalt, zirconium, zinc or nickel) supported thereon. The material of the present invention is used in collecting and concentrating radionuclides present in liquid radioactive wastes discharged from nuclear power plants and other facilities using radioisotopes such as hospitals and non-destructive testing laboratories. The material is also used in collecting and concentrating radionuclides and heavy metals present in the seawater, rivers and industrial waste-water.

Abstract: Threads and fibres of synthetic polymers containing from 0.1 to 5% by weight, based on the polymer, of one or more than one compound corresponding to the formula (I) ##STR1## wherein R represents hydrogen or alkyl,R.sup.1 represents halogen, hydroxyl, optionally substituted alkyl, optionally substituted alkoxy, optionally substituted phenoxy, a group --S(O).sub.p -alkyl which is optionally substituted in the alkyl portion, nitro, optionally substituted amino or a condensed carbocyclic or heterocyclic group,p stands for the numerical value 0, 1 or 2,R.sup.2 represents halogen, alkyl which is optionally substituted, alkoxy, alkylmercapto, nitro, cyano, carboxylic acid amide or a condensed carbocyclic group,m represents an integer from 0 to 5,n represents an integer from 0 to 4, the substituents being either identical or different when m and/or n has a value greater than 1, and X, Y and Z are identical or different and represent a nitrogen atom, the group .dbd.CH-- or ##STR2## where R.sup.

Abstract: A waterless dip dye composition for non-textile and general-utility articles comprises an aromatic ester of the formula ArCOOR.sub.2, ArCOO--R.sub.1 --OOCAr or (ArCOO).sub.z --R.sub.3, wherein R.sub.1 is alkylene of 2-8 carbon atoms or polyoxyalkylene of the formula --C.sub.r H.sub.2r (OC.sub.r H.sub.2r).sub.s, in which r is 2 or 3 and s is 1 to 15; R.sub.2 is substituted or unsubstituted alkyl or alkenyl of 8-30 carbon atoms; R.sub.3 is the residue of a polyhydric alcohol having z hydroxyl groups; Ar is substituted or unsubstituted mono- or bicyclic aryl of up to 15 carbon atoms and z is 3-6, admixed with at least 0.5% by weight of a dyeing assistant agent and an organic colorant.A process for coloring non-textile and general-utility articles, fabricated from polyester, polyamide, polyurethane, acrylic, halogenated polyolefin or epoxy plastic, comprises exposing an article to the foregoing compositions, maintained at a temperature from about 100.degree. C.

Abstract: A waterless dip dye composition for apparel- and textile-related articles comprises an aromatic ester of the formula ArCOOR.sub.2, ArCOO--R.sub.1 --OOCAr or (ArCOO).sub.z --R.sub.3, wherein R.sub.1 is alkylene of 2-8 carbon atoms or polyoxyalkylene of the formula --C.sub.r H.sub.2r (OC.sub.r H.sub.2r).sub.s, in which r is 2 or 3 and s is 1 to 15; R.sub.2 is substituted or unsubstituted alkyl or alkenyl of 8-30 carbon atoms; R.sub.3 is the residue of a polyhydric alcohol having z hydroxyl groups; Ar is substituted or unsubstituted mono- or bicyclic aryl of up to 15 carbon atoms and z is 3-6, admixed with at least 0.5% by weight of a dyeing assistant agent and an organic colorant.A process for coloring apparel- and textile-related articles, fabricated from polyester, polyamide, polyurethane, acrylic, halogenated polyolefin or epoxy plastic, comprises exposing an article to the foregoing compositions, maintained at at a temperature between 100.degree. C.

Abstract: A waterless dye composition for apparel and other thermoplastic articles comprises an aromatic polyester of the formula C.sub.6 H.sub.z' --(COOR.sub.1).sub.z, wherein z is 3, 4, 5, or 6; z' is 6 - z; and R.sub.1 is higher alkyl; and/or a cycloaliphatic diester of the formula ##STR1## wherein R is substituted or unsubstituted straight or branched chain alkyl of 4-20 carbon atoms, polyoxyalkylene of the formula HO(C.sub.x H.sub.y O).sub.n C.sub.x H.sub.y -- or phosphated polyoxyalkylene of the formula(HO).sub.2 P(.dbd.O)O(C.sub.x H.sub.2x O).sub.n C.sub.x H.sub.2xor a salt thereof, wherein (C.sub.x H.sub.2x O).sub.n is (CH.sub.2 CH.sub.2 O).sub.n, (C.sub.3 H.sub.6 O).sub.n or (CH.sub.2 CH.sub.2 O).sub.p -- (C.sub.3 H.sub.6 O).sub.q, n is 2-22, and the sum of p+q is n; and an organic colorant.

Abstract: A waterless dye composition for apparel and other articles, made from thermoplastic materials, comprises an aliphatic polyester of a higher alkanoic acid and a polyol, of the formula (ACOO).sub.2-6 B, wherein A is alkyl of 8-22 carbon atoms and B is the residue of a polyhydric alcohol, other than glycerol, of 2-6 hydroxyl groups and an organic colorant. The compositions can further comprise an aromatic polyester of the formula C.sub.6 H.sub.z' --(COOR.sub.1).sub.z, wherein z is 3, 4, 5, or 6; z' is 6-z; and R.sub.1 is higher alkyl; and/or a cycloaliphatic diester of the formula ##STR1## wherein R is substituted or unsubstituted straight or branched chain alkyl of 4-20 carbon atoms, polyoxyalkylene of the formula HO(C.sub.x H.sub.y O).sub.n C.sub.x H.sub.y -- or phosphated polyoxyalkylene of the formula (HO).sub.2 P(.dbd.O)O(C.sub.x H.sub.2x O).sub.n C.sub.x H.sub.2x or a salt thereof, wherein (C.sub.x H.sub.2x O).sub.n is (CH.sub.2 CH.sub.2 O).sub.n, (C.sub.3 H.sub.6 O).sub.n or (CH.sub.2 CH.sub.2 O).sub.

Abstract: A waterless dye composition for apparel and other thermoplastic articles comprises a bisterephthalate diester of an alkylphenoxypolyethoxyethanol and an organic colorant. Aromatic polyesters of the formula C.sub.6 H.sub.z' --(COOR.sub.1).sub.z, wherein z is 3, 4, 5, or 6; z' or 6 - z and R.sub.1 is higher alkyl and/or cycloaliphatic diesters of the formula ##STR1## wherein R is substituted or unsubstituted straight or branched chain alkyl of 4-20 carbon atoms, polyoxyalkylene of the formula HO(C.sub.x H.sub.y O).sub.n C.sub.x H.sub.y -- or phosphated polyoxyalkylene of the formula(HO).sub.2 P(.dbd.O)O(C.sub.x H.sub.2x O).sub.n C.sub.x H.sub.2xor a salt thereof, wherein (C.sub.x H.sub.2x O).sub.n is (CH.sub.2 CH.sub.2 O).sub.n, (C.sub.3 H.sub.6 O).sub.n or (CH.sub.2 CH.sub.2 O).sub.p --(C.sub.3 H.sub.6 O).sub.q, n is 2-22, and the sum of p+q is n can be admixed with the terephthalate composition.

Abstract: A key button molded of a synthetic resin and having on the top surface thereof a character or symbol printed with a coloring agent comprising a dye and a solvent which is capable of dissolving the dye and the synthetic resin, wherein the character or symbol is durably formed on the top surface by the action of the solvent on the surface and body to cause the dye to permeate the surface and the body.

Abstract: The present invention concerns our discovery that decorative sheets and coverings comprising polyvinyl chloride and having substantially non-migratable through-color images may be prepared using cationic dyestuffs. These coverings may be prepared by providing a variety of polyvinyl chloride-containing substrates with image compositions comprising cationic dyestuffs and a suitable binder, and then treating these materials such that the cationic dyestuffs migrate into the substrate. Through-color images are obtained which are substantially non-migrating, even under severe conditions.

Abstract: Dyestuffs of the formula ##STR1## are used for coloring organic solvents, mineral oil products, waxes, plastics and surface coatings, wherein R is alkyl having 1 to 7 carbon atoms, R.sup.1 is alkyl having 1 to 8 carbon atoms or alkenyl having 3 or 4 carbon atoms, and R.sup.2 is hydrogen, alkyl having 1 to 8 carbon atoms or alkenyl having 3 or 4 carbon atoms.

Abstract: A colored, porous fluorocarbon material is provided wherein a porous layer of a colored dyeing-site resin is formed on all surfaces of the fluorocarbon material. This new material is made by a process whereby an auxiliary solvent which does not readily dissolve a dyeing-site resin, if at all, is added to a solution of the dyeing-site resin in a main solvent, and this is coated onto the surfaces of the fluorocarbon material and dried. The material may be dyed by adding dyestuff to the aforesaid solution or it may be dyed after coating and drying. The coated fluorocarbon material can be stretched.

Abstract: A colorant preparation containing(A) a colorant which is sparingly soluble or insoluble in water,(B) a plasticizer based on an ester and(C) a reaction product of a fatty acid ester of a polyhydric alcohol and ethylene oxide, a process for the production of this preparation and its use for pigmenting plastics.

Abstract: The invention relates to a homopolymer or copolymer of acrylonitrile which comprises from 0 to 30% by weight, incorporated by polymerization, of comonomer units which are free from ionic groups, said polymers having a K-value of from 50 to 100, a dye absorption capacity for cationic dyes of at least 0.5% by weight, a conductivity, measured in dimethylformamide solution, of at least 10.mu. Siemens, and from 0.2 to 1.5% by weight of sulphur fixed to said polymer as well as to a process for the production thereof.

Abstract: Anthraquinone-azomethine compounds of the formula ##STR1## or of the tautomeric formula ##STR2## in which A denotes an anthraquinone radical which is free from sulphonic acid groups and is optionally further substituted and which preferably consists of at most 5 fused rings,R.sub.1 denotes hydrogen, optionally substituted aryl, preferably ##STR3## hetero-aryl, cycloalkyl or C.sub.1 -C.sub.12 -alkyl, it being possible for the alkyl chain to be interrupted by oxygen or sulphur and/or to be substituted by hydroxyl groups or N(R.sub.3).sub.2 groups, --N(R.sub.3).sub.2 or ##STR4## R.sub.2 denotes a substituent, R.sub.3 denotes hydrogen, C.sub.1 -C.sub.4 -alkyl, cycloalkyl oroptionally substituted aryl,m denotes 1, 2, 3 or 4 andn denotes 0, 1, 2, 3, 4 or 5, processes for their preparation and processes for pigmenting organic macromolecular substances using the new anthraquinone-azomethine compounds.

Abstract: Anthraquinone derivatives which, in one of their tautomeric structures, correspond to the formula ##STR1## in which A denotes an anthraquinone radical which is free from sulphonic acid groups, is optionally further substituted and preferably consists of at most 5 fused rings,m denotes a number from 1 to 4, preferably 1 or 2,R denotes a substituent andn denotes 0, 1, 2, 3 or 4,processes for their preparation, their use for pigmenting organic macromolecular substances, and the material pigmented in this manner.

Abstract: Anthraquinone-azomethine compounds of the formula ##STR1## or of the tautomeric formula ##STR2## or of the tautomeric formula ##STR3## in which A denotes an anthraquinone radical which is free from sulphonic acid groups and optionally further substituted and which preferably consists of at most 5 fused rings,R.sub.1 denotes hydrogen, C.sub.1 -C.sub.4 -alkyl, hydroxy-C.sub.1 -C.sub.4 -alkyl, optionally substituted phenyl, carboxyl, carboxylic acid, C.sub.1 -C.sub.4 -alkyl ester or hydroxyl,R.sub.2 denotes hydrogen, halogen, nitro, cyano, optionally substituted carbamoyl or optionally substituted sulphamoyl, sulphonic acid C.sub.1 -C.sub.4 -alkyl ester, sulphonic acid aryl ester, C.sub.1 -C.sub.4 - alkylcarbonyl, C.sub.1 -C.sub.4 -alkoxycarbonyl, optionally substituted benzoyl, alkyl or optionally substituted phenyl sulphone, or a hetero-aromatic radical, for example a radical of the formula ##STR4## or of the formula ##STR5## or of the formula ##STR6## R.sub.

Abstract: Anthraquinone derivatives which in one of their tautomeric structures correspond to the formula ##STR1## in which A denotes an anthraquinone radical which is free from sulphonic acid groups, is optionally further substituted and preferably consists of at most 5 fused rings,m is a number from 1-4 and preferably 1 or 2,R.sub.1 is hydrogen or a C.sub.1 -C.sub.4 -alkyl group andR.sub.2 is a cyano group or a radical of the formula ##STR2## or a radical of the formula ##STR3## in which formulae R.sub.3 is hydrogen, a straight-chain or branched alkyl group of a cycloalkyl radical,R.sub.4 is a substituent,n is 0, 1, 2, 3 or 4 andp is 0, 1, 2, 3, 4 or 5,processes for their preparation and their use for pigmenting organic macromolecular substances.