Abstract: The preparation of particular fluorescent silane dye compositions is disclosed. These silane dye compositions have particular utility as reactants in the preparation of silicone polymeric fluorescent dyes which can be ideally used as chemical indicators in biological sensors.

Abstract: Formulations of a cationic dye component (e.g., Azure A-Azure B-Azure C mixtures), an anionic dye component (e.g., Eosin Y) and an alcohol solvent (e.g., methanol or methanol-glycerol mixtures) are stabilized by an amino acid or its acid addition salt (e.g. lysine hydrochloride or glycine or a mixture of these).

Abstract: A colored thermoplastic resin composition is provided which comprises a thermoplastic resin and a colorant in the form of an alkyleneoxy-substituted chromophore group provided in said thermoplastic resin in a minor amount sufficient to provide coloration to said thermoplastic resin. A process for preparing colored thermoplastic resins is also provided.

Abstract: An organic photochromic composition comprising spiro [indoline-2,3'-[3H]-naphth [2,1-b] [1,4] oxazine] dye (spirooxazine dye) and unconventional ultraviolet stabilizers. The ultraviolet stabilizers improve the light fatigue resistance of the spirooxazine (S.O.) dye and will not hinder the photocolorability of the photochromic composition. The unconventional ultraviolet stabilizers belong to the class of hindered amine light stabilizers (HALS) and excited state quenchers.

Abstract: Stabilized staining solutions containing dyestuffs and stabilizers, which contain dimethylammonium sulfate as a stabilizer.

Abstract: Disclosed herein is a base material having dyed membrane(s) on the surface thereof, the dyed membrane(s) being obtained by a process comprising the steps of applying a photoreactive resin composition (D), which comprises (i) a copolymer (A) of a vinyl monomer having photosensitive group(s) and another vinyl monomer which is copolymerizable with the vinyl monomer having photosensitive group(s) and has group(s) having an affinity for an anionic dyestuff, (ii) an initiator (B) of photo-reaction as an optional component of the photoreactive resin composition (D) and (iii) a solvent (C), onto the surface of the base plate, thereby forming a membrane from the thus applied resin composition (D) on the surface of the base material, irradiating the thus formed membrane(s) with activating light, thereby initiating a reaction in the membrane, and thereafter dyeing the thus treated membrane with the anionic dye.

Abstract: A method of applying a dye image to a plastic member and the image bearing member thereby formed. A disperse dye having a melting point which is below the thermal deflection temperature of the plastic of the member and a vaporization point which is above said deflection temperature is applied to a surface of the member in a desired image. The dye bearing plastic is then heated to a temperature which is above the melting point of the dye and below the thermal deflection temperature of the plastic, but which is nevertheless high enough to cause some softening of said plastic. The dye is then permitted to diffuse into the plastic to provide a sharp, clear and durable image thereon.

Abstract: Compounds of the formula ##STR1## in which R.sub.1 and R.sub.2 are unsubstituted or substituted phenyl or naphthyl, and R.sub.3 and R.sub.4 are alkyl, alkoxycarbonyl, phenyl, benzoyl or benszl, are suitable for dyeing high molecular weight organic material.

Abstract: A process for transfer printing onto solid substrates made of plastics or having a surface layer of varnish or plastic is described. According to the invention described a sheet dye carrier at a temperature suitable for dye transfer is pressed to a preferably preheated surface and/or to a limited area of the surface to be printed by means of superatmospheric gas pressure, in particular by means of a flowing gas. Additionally the surface to be printed is maintained at a temperature below the thermoplastic range during the transfer process.

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 colored thermoplastic resin composition is provided which comprises a thermoplastic resin and a colorant in the form of an alkyleneoxy-substituted chromophore group provided in said thermoplastic resin in a minor amount sufficient to provide coloration to said thermoplastic resin. A process for preparing colored thermoplastic resins is also provided.

Abstract: Process for mass-coloring high-molecular organic material, which comprises using a metal complex of the formulae I and/or Ia ##STR1## in which R is a hydrogen or chlorine atom or a methyl or methoxy group, R.sub.1 is a hydrogen atom, C.sub.1 -C.sub.4 -alkyl or phenyl which is unsubstituted or substituted by halogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, --NO.sub.2, --CONH.sub.2 --CONHR.sub.2 or C.sub.2 -C.sub.5 -N-alkylcarbamoyl, X is --CH.dbd. or --N.dbd., M is a divalent transition metal, and A is phenyl or substituted phenyl and R.sub.2 is alkyl, phenyl or substituted phenyl.The resulting colorations are distinguished by high tinctorial strength and good fastness properties, such as light, weathering and migration fastness properties.

Abstract: Transfer sheets are provided which include a polyethylene imine as a blocking agent and which are useful in the heat transfer dye printing of various materials such as textiles. The polyethylene imine is capable of completely or partially blocking the transfer of sublimable dyes which have been imprinted on the transfer sheet while having no effect on other dyes which also have been imprinted on the transfer sheet. By using such transfer sheets, designs can be printed which are not otherwise obtainable by conventional techniques. The invention further concerns the method of making such sheets, their use in the printing of various materials, and the materials which have been so printed.

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: Spherical particles of cured epoxy resin having an average size not larger than 50 .mu.m can be produced by adding a water-soluble amine curing agent to an emulsion of uncured epoxy resin.It is possible to prepare spherical particles incorporating a UV absorber or inorganic particles, to dye these particles with an acid dye, and to subject them to electroless plating.In addition, after-treatment of the cured particles enhances their heat resistance and destroys the epoxide groups left unreacted inside each particle.These particles may be used as an ingredient of cosmetic and coating compositions, as a toner of electrostatic copiers, and for other applications.

Abstract: A method of applying a dye image to a plastic member and the image bearing member thereby formed. A disperse dye having a melting point which is below the thermal deflection temperature of the plastic of the member and a vaporization point which is above said deflection temperature is applied to a surface of the member in a desired image. The dye bearing plastic is then heated to a temperature which is above the melting point of the dye and below the thermal deflection temperature of the plastic, but which is nevertheless high enough to cause some softening of said plastic. The dye is then permitted to diffuse into the plastic to provide a sharp, clear and durable image thereon.

Abstract: Silane quinacridone dyes, composite pigments obtainable therefrom by association with an inorganic substrate, and the processes for preparing them. The dyes have the general formula: ##STR1## wherein X is an --SO.sub.2 NHR group, where R is an alkyl group, linear or branched, having from 1 to 6 carbon atoms, a cycloalkyl group, a phenyl group optionally substituted by one or more alkyl or alkoxy groups (C.sub.1 -C.sub.6), a halogen; Y and Z indicate a silane group having the formula: ##STR2## wherein R.sub.1 is an alkoxy group (C.sub.1 -C.sub.2), R.sub.2 is an alkyl group (C.sub.1 -C.sub.4) or a phenyl group; n is 3, 4 or 5; q is 0 or 1; p and m are integers, such that when q is 1, p is 2 and m is 0, 1 or 2, and when q is 0, p is 3 and m is 0, 1, 2 or 3; W indicates an --SO.sub.3 H group; a, b and c are 0 or 1, selected in such a way that the sum a+b+c is equal to 1.

Abstract: The compound of the formula, ##STR1## a pigment existing in a yellow (.alpha.) modification and an orange (.beta.) modification, the latter being obtained by treatment of the .alpha. form with boiling organic solvents, is useful for the mass pigmenting of synthetic plastics and resins, free from or containing solvents, such as viscose, cellulose acetate, polyethylene, polystyrene, polyvinyl chloride and synthetic leathers and rubbers, of surface coatings such as paints and lacquers and of inks and for pigment printing, textile coating and pigmenting paper in the mass.

Abstract: A thick coat of polyester powder is imparted onto a heated spectacle frame, some of the powder is removed from the frame hinges and replaced with a thin coat, the coated product is baked to fuse the powder and subsequently immersed in a heated aqueous dispersion of a disperse type dye, and the dyed product is subsequently reheated to a temperature sufficient to cause dye diffusion into the fused coating.

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: There is described a process for producing, in a continuous manner, a gradient dyeing across the width of a long strip of a plastic sheet and an apparatus used therefor. In a preferred embodiment of the invention, the orientation of the plastic strip is maintained substantially constant during the passage through a dye bath, and the dye liquid level is repetitively varied by use of a liquid level control means. This invention is particularly useful for making gradient-dyed plastic sheets which in turn are used for making sunglass lenses.

Abstract: In the printing of dyes onto substrates, the pretreatment of the substrates with low levels of calcium or sodium salts or other gelling/insolubilizing agents effectively reduces dye usage.

Abstract: A pattern is applied to a travelling web, such as a rug, by delivering a carrier liquid with individually spaced apart quantities of a pattern liquid therein to the surface of the rug. The pattern liquid is delivered into or onto the carrier liquid via various types of applicator means and the individual quantities of pattern liquid are maintained in spaced apart relation at least until being deposited onto the nap of the rug.

Abstract: A solution for coating plastic material for tinting and the method of making said solution is described. The process for coating plastic material and for tinting the material is also described. This solution and process provides scratch resistance to the surface of the coated polycarbonate and CR-39 lenses, absorbs dye and permits the plastics to absorb the dye and adheres strongly to the plastic surface.

Abstract: The storage and light stability of an anthocyanin food colorant obtained by extraction from grape pomace is enhanced by combination with tannic acid.

Abstract: Plastic articles of thermoplastic or thermoset plastic are penetrated with dispersed dyes in one or more colors in clearly defined patterns, the penetrated portion or surface of the article being free of dye adhesive and dye carrier and in some cases having a surface texture imparted thereto.

Abstract: There are described a new class of organic dyes containing silane groups, the composite pigments obtainable therefrom by associating them with a substrate (SiO.sub.2, TiO.sub.2, Al.sub.2 O.sub.3), and the processes for preparing same.The silane organic dyes have the formula (I): ##STR1## wherein all substituents are defined later. The silane dyes (I) are utilized per se for dyeing natural fibres, such as wool, and man-made fibres, such as the polyamide, polyester, polyacrylic fibres and the like, while the composite pigments prepared from said dyes by association with an inorganic substrate are employed in paints, air enamels and stoving enamels, in the pigmentation of plastics, in the inks, in the printing of textiles etc.

Abstract: There is described a process for producing, in a continuous manner, a gradient dyeing across the width of a long strip of a plastic sheet and an apparatus used therefor. In a preferred embodiment of the invention, the orientation of the plastic strip is maintained substantially constant during the passage through a dye bath, and the dye liquid level is repetitively varied by use of a liquid level control means. This invention is particularly useful for making gradient-dyed plastic sheets which in turn are used for making sunglass lenses.

Abstract: A dyestuff of the formula ##STR1## wherein X.sub.1 denotes amino, cyanamino, acetylamino, guanidino, ureido or hydroxyl;Y.sub.1 and Z.sub.1 denote hydroxyl or amino, with the proviso that at most 2 of the 3 radicals X.sub.1, Y.sub.1 and Z.sub.1 denote hydroxyl;R.sub.1 represents hydrogen, nitro, chlorine, bromine, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, nitrile, C.sub.1 -C.sub.4 -alkylsulphonyl, trifluoromethyl, phenylsulphonyl, benzylsulphonyl, phenoxy, carbo-C.sub.1 -C.sub.4 -alkoxy, carbophenoxy, carbonamido, C.sub.1 -C.sub.4 -alkylcarbonylamino, benzoylamino, sulphonamido, or carbonamido or sulfonamide mono-substituted or disubstituted by C.sub.1 -C.sub.4 -alkyl, phenyl, or benzyl; andR.sub.2 and R.sub.3 represent hydrogen; chlorine C.sub.1 -C.sub.4 -alkyl, carbo-C.sub.1 -C.sub.4 -alkoxy, carbonamido; carbonamido mono-substituted or disubstituted by C.sub.1 -C.sub.4 -alkyl, phenyl, or benzyl, or C.sub.1 -C.sub.4 -alkoxyand a process for coloring substrates using such dyestuff.

Abstract: Apparatus and method for coloring or patterning Easter eggs in which a dish-shaped container having an inner surface that is non-absorbent of liquid dye is provided with inwardly-extending projections adapted to receive coloring dye. The egg to be patterned is coated with coloring material and, while the material remains wet, is rolled around the interior of the container by a swirling motion.

Abstract: Described is a process for the production of negligibly dusty preparations of dyes and/or optical brighteners, which process comprises mixing an adhesive as e.g. sorbitol and a dust binding surface active agent into a mixture of dye or optical brightener and, optionally, further additives.

Abstract: Polymeric dyes of the general formula I ##STR1## where A is the radical of a methylene-active compound, which may or may not be quaternized,B.sup.1 and B.sup.2 are bridge members which may or may not be quaternized or B.sup.2 may be a direct bond,n is number >1,p is the number of positive charges,R is hydrogen, chlorine, bromine, hydroxyl, C.sub.1 -C.sub.8 -alkyl, nitro, C.sub.1 -C.sub.8 -alkoxy, C.sub.1 -C.sub.8 -alkoxycarbonyl, cyano, hydroxycarbonyl, unsubstituted or substituted carbamyl or unsubstituted or substituted amino,R.sup.1 is hydrogen, chlorine, hydroxyl, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy orR and R.sup.1 together are an unsubstituted or substituted fused ring, or R and R.sup.1 together with B.sup.2 are a heterocyclic radical andA.sup..crclbar. is an anion.

Abstract: A unitary laminate is produced bearing a permanently visible pattern of indicia. The laminate comprises a binder layer, containing pigment, and a transparent layer, each formed of hydrophobic synthetic polymer. Sublimable dyestuff is heat transferred from an auxiliary carrier web to the transparent layer to submerge the pattern into an external surface of the transparent layer.

Abstract: Disclosed is a Romanowsky stain having improved stability characteristics which comprises a methanol solution of Methylene Blue, an azure dye and the free acid of Eosin Y.

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: The present invention is a stabilized Romanowsky type stain solution. The stain solution which comprises azures, Methylene Blue and an eosin dye in methanol solution, is stabilized by the addition thereto of a stabilizing amount of a combination of dimethylamine hydrochloride and a second amine of the formula R.sub.2 NH.sub.2.sup.+ Cl.sup.- or R.sub.3 NH.sup.+ Cl.sup.- where R is ethyl, n-propyl or n-butyl.

Abstract: Water-fast printing of paper stock using a colorant solution containing water-soluble polymeric dyes is accomplished by a three step process. Step 1 is selecting a paper stock characterized as containing at least 250 ppm by weight of cation, particularly a polyvalent metal cation (especially Ca.sup.2+ or Al.sup.3+). In step 2, a colorant solution is applied to the paper. This solution is water-based, containing up to 30 wt % of an organic paper-penetrating agent (such as an alkanol), and at least 500 ppm of one or more anionic group-possessing polymeric colorants. In step 3, the solvent is exhausted by either evaporation (which may be aided by the application of heat) or diffusion into the paper stock, or by a combination of both.

Abstract: Dyeing of plastic articles, particularly sunglass lenses is conducted by use of a dye bath composition comprising a dye and a mixed solvent. At least about 70 weight % of the mixed solvent consists of glycerol and ethylene glycol whose relative ratio is in the range of from 95:5 to 20:80. The dyeing method and the dye bath composition are very advantageous for manufacturing sunglass lenses having high optical and aesthetic quality, particularly for dyeing hard-coated polarized lenses.

Abstract: Compounds of the formula ##STR1## in which A--X-- is the radical of a diazo component,X-- is ortho to the azo group and is a metallizable substituent or a substituent convertible to a metallizable group,Y is --OH or --NH.sub.2,Z is methyl or carboxy,R is hydrogen, halogen, methyl or sulpho,andB is the radical of a coupling component of the heterocyclic, acyclic active methylene or monocyclic benzene series, which coupling component of the monocyclic benzene series contains an amino and/or hydroxy group which groups may be alkylated or acylated, and--N.dbd.N--B is bound to the 3- or 4-position of ring D,which compounds contain at least one water-solubilizing group,and metal complexes thereof, with the proviso that when the compounds are unmetallized, B is other than amonocyclic benzene coupling component radical. The metal complexes are useful as dyes for the dyeing and printing of anionic dyeable.

Abstract: Disclosed is a cell-staining solution which contains Azure B, Eosin Y, and a stabilizing amount of diethylamine hydrochloride in methanolic solution, which produces a Romanowsky-type staining effect.

Abstract: A method for making a decorated, water-resistant, rigid panel comprising supplying a cured, pre-coated rigid panel having a clear, water-resistant polymeric coating on one surface of the panel and a printed sheet having a design, picture or other form of decoration on one surface thereof, said decoration being formed by a sublimable coloring agent. The rigid panel and the printed sheet are originally maintained at room or ambient temperature. The coated surface of the rigid panel and the decorated surface of the printed sheet are brought into physical contact, and their surfaces are maintained in contact for a brief period of time by applying light pressure thereto. While the surfaces are maintained in contact, heat is applied thereto for a short period of time to sublime the coloring agent and cause it to be transferred to and penetrate into the polymeric coating on the surface of the rigid panel.

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 pharmaceutical tablet consists of a substrate containing a medicament and may be covered with a coating, said coating including a pigment comprising a natural water insoluble edible powder dyed with an edible natural dye. The pigment for coloring the tablet, or other pharmaceutical products, as well as food and cosmetics, is made by suspending a natural water insoluble edible powdered substrate in an aqueous vehicle and dyeing the suspended powdered substrate with an edible natural dye. The liquid is removed to obtain the dry pigment powder of the invention which then can be suspended in a suspending medium and used for coating products to be colored such as food, drug and cosmetic products.

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: This invention deals with the coloring or dyeing of polyoxymethylene resins and particularly with preventing color migration therein. Color migration in molded articles of colored polyoxymethylene resins is prevented by dyeing the articles with disperse dyes, and treating the articles with a compound having one or more isocyanate groups, for example, a urethane prepolymer.

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: Compounds of the general formulaA.sup.1 .dbd.CH--B--CH.dbd.A.sup.2where A.sup.1 and A.sup.2 are the radical of a quaternized methylene-active compound and B is a bridge member.The compounds according to the invention are very suitable for coloring ligneous and lignin-free paper stock.

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.