Abstract: Dyestuffs of the formula ##STR1## in which X designates OR.sub.2 or a group NHR.sub.2,Y designates H or a group NHR.sub.2 or OR.sub.2,Y' designates H or NHR.sub.1,R.sub.1 and R.sub.2 designate H, alkyl, cycloalkyl, aryl or aralkyl and if Y or Y' represents H,Q designates aryl, a thienyl radical or a group --OR.sub.2, --NHR.sub.3, --SO.sub.2 R.sub.3, --S--CO--R.sub.3, --CO--SR.sub.3, --SR.sub.3, --CH.dbd.NR.sub.3, --COOR.sub.3, --OCOR.sub.3, --OCOOR.sub.3, --NHCO--OR.sub.3, --O--SO.sub.2 --R.sub.3, --NH--CO--NHR.sub.3, --O--CO--NHR.sub.3, --CHO, --O--CH.sub.2 CH.sub.2 --OR.sub.3 or --SO.sub.3 R.sub.3,M designates H, halogen or Q,R.sub.3 designates alkyl, aralkyl, cycloalkyl or a heterocyclic radical or a radical Z of the formula ##STR2## wherein R.sub.4 and R.sub.8 denote H, halogen, CF.sub.3, alkyl or alkoxy andR.sub.5 and R.sub.6 denote R.sub.4, --SR.sub.3, --NO.sub.2, --OR.sub.3, --CO.sub.2 R.sub.3, --COR.sub.3, --SCOR.sub.3, --SO.sub.3 R.sub.3, --NHCONHR.sub.3, --OCONHR.sub.3, --OSO.sub.2 R.sub.

Abstract: Pigments of the formula ##STR1## in which Me=Zn, Cu, Co or preferably Ni,R=alkyl, cycloalkyl, aralkyl, aryl and hetaryl, where the mentioned radicals can be substituted, andAr=optionally substituted aryl,processes for their preparation, and their use.

Abstract: Anthraquinone-azo pyridone-containing compounds which in one of their tautomeric structures, correspond to the formula ##STR1## in which A denotes an .alpha.-anthraquinone radical which is free from sulphonic acid groups and is unsubstituted or substituted and preferably consists of at most 5 fused rings;R.sub.1 denotes hydrogen; alkyl, preferably C.sub.1 -C.sub.4 -alkyl; aryl, preferably phenyl or naphthyl; carboxyl; carboxylic acid ester, preferably carboxylic acid C.sub.1 -C.sub.4 -alkyl ester; or hydroxyl andR.sub.2 denotes hydrogen; halogen; nitro; cyano; unsubstituted or substituted carbamoyl or sulphamoyl; alkylcarbonyl, in particular (C.sub.1 -C.sub.4 -alkyl)-carbonyl; alkoxycarbonyl, in particular (C.sub.1 -C.sub.4 -alkoxy)-carbonyl; alkyl- or unsubstituted or substituted aryl-sulphone, preferably C.sub.1 -C.sub.

Abstract: Dyestuffs of the formula ##STR1## in which Y.sub.1, Y.sub.2, Y.sub.3, Y.sub.4 designate hydrogen, halogen, nitro, amino, alkylamino, arylamino, cycloalkylamino, aralkylamino, alkylthio, arylthio, cycloalkylthio, aralkylthio or hydroxyl, it being possible for the hydrocarbon radicals to be sustituted, with the proviso that(a) at least one of the substituents Y.sub.1, Y.sub.2, Y.sub.3 or Y.sub.4 does not denote hydrogen,(b) a maximum of two of the substituents Y.sub.1, Y.sub.2, Y.sub.3 and Y.sub.4 designate halogen and either(c.sub.1) X.sub.1, X.sub.3 represent halogen, --R.sub.1, --OR.sub.1 or --SR.sub.1, R.sub.1 denoting optionally substituted alkyl, it being possible for the alkyl chain to be substituted by an oxygen atom or several non-adjacent oxygen atoms, optionally substituted aryl, optionally substituted cycloalkyl, optionally substituted aralkyl or an optionally substituted heterocyclic radical and X.sub.2 designating hydrogen, or(c.sub.2) X.sub.1, X.sub.

Abstract: Azine pigments having the probable structure ##STR1## wherein the rings designated by T, R', X and X' can be substituted or expanded to naphthalene systems. The pigments can be prepared by reacting compounds having the probable structures ##STR2## in the presence of hydrazine. The compounds having the probable structures (IV) and (IVa) are formed by reacting isatoic anhydrides or anthranilic acid esters or anthranilic acid amides with at least one mol of an aminoiminoisoindolenine.

Abstract: Red pigment of the formula ##STR1## a process for its preparation and its use.

Abstract: Pigments which, in one of their tautomeric forms, have the formula ##STR1## in which R signifies --CH.sub.3 or ##STR2## and which, in the event that R is --CH.sub.3, are present in the .beta.-modification which is characterized by the lattice plane spacings d/.ANG. 13.33, 12.67, 9.17 and 15.15 having the relative intensities 100, 100, 60 and 2%, process for their preparation and their use.

Abstract: Anthraquinone dyestuffs of the formula ##STR1## in which R.sub.1 represents alkyl, aralkyl, --CO--X-alkyl, --CO-- X-aralkyl, --CO--X-aryl, --O-alkyl, --O-aralkyl, --O-- aryl, --CN, --NO.sub.2, --CF.sub.3, halogen or a heterocyclic radical andR.sub.2 represents H or R.sub.1,X representing O, S, NH or a direct bond andY.sub.1, Y.sub.2, Y.sub.3 and Y.sub.4 denoting hydrogen, --NH.sub.2, --OH, halogen, --NO.sub.2 or an arylmercapto group and at least one of the substituents Y.sub.1 -Y.sub.4 representing an arylmercapto group,it being also possible for the alkyl, aryl, aralkyl and heterocyclic radicals mentioned for R.sub.1 and Y.sub.1 -Y.sub.4 to be substituted, the preparation and use thereof, and dichroic material containing these anthraquinone dyestuffs.

Abstract: Anthraquinone dyestuffs of the formula ##STR1## in which R.sub.1 and R.sub.2 denote hydrogen, alkyl, cycloalkyl, aryl or aralkyl, and the said hydrocarbon radicals can be substituted, andQ denotes an aryl radical or heterocyclic radical or an --OR', --SR', --CH.dbd.N--R', ##STR2## --CHO or --SO.sub.2 --O--R' radical, whereinR' represents an aryl, aralkyl or heterocyclic radical, and the radicals mentioned for R' can be substituted,processes for their preparation, and liquid-crystalline materials containing anthraquinone dyestuffs.

Abstract: Isoindolazines which, in one of their tautomeric structures, have the formula ##STR1## where the rings designated X and T can be substituted andA.sup.1 and A.sup.2 represent the divalent radical of a compound having two replaceable hydrogen atoms on a C or N atom, in particular the divalent radical of an active methylene compound, of an amine, of a hydrazine, of a hydrazide or of a hydrazone,salts and complexes of these compounds, processes for their preparation, and their use as pigments.

Abstract: The partly known blue dyestuffs of the formula ##STR1## wherein R.sub.1 denotes hydrogen, alkyl, aralkyl, alkenyl, cycloalkyl or aryl,R.sub.2 denotes hydrogen or alkyl,Me.sup.(+) denotes a cation andn denotes 1 or 2,are highly suitable for the trichromatic dyeing of polyamide fibre materials, producing level dyeings thereon with a good standard of fastness.

Abstract: Process for the preparation of dimethyl succinylosuccinate, or the disodium salt thereof, by condensation of dimethyl succinate in a 35-45 percent by weight solution of sodium methylate in methanol, and a process for the preparation of dianilinodihydroterephthalic acids, the dimethyl esters and salts thereof, and of dianilinoterephthalic acids, and the dimethyl esters and salts thereof, starting from the disodium salt of dimethyl succinylosuccinate prepared according to the new process, without intermediate isolation.

Abstract: 1,4-Diamino-2,3-dicyano-anthraquinone is obtained in good yields and in high purity by reacting 1-amino-4-bromo-anthraquinone-2-sulphonic acid with ammonia and then reacting the 1,4-diamino-anthraquinone-2-sulphonic acid, which is not isolated as an intermediate, with cyanide ions, in formamide or N-methylformamide.

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: Process for working up aqueous nitric acid which is of a concentration above the azeotropic concentration and contains organic compounds in solution for suspension wherein said nitric acid of a concentration about the azeotropic concentration is distilled off in one or more rectification steps until the azeotropic nitric acid is obtained. In the process, certain specified ratios of nitric acid and water to organic constituents must be maintained.

Abstract: Anthraquinone dyestuffs of the formula ##STR1## wherein A is an optionally substituted anthraquinone radical andR is an optionally substituted aryl radical, are obtained in outstanding yields, and without pollution of the effluent, by reacting 1 mol each of amino-anthraquinone and cyanuric chloride in excess phenol in a one-pot process and at 50.degree.-200.degree. C. in the absence of acid acceptors and organic solvents.

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 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,m denotes an integer, preferably 1 or 2, andR.sub.1 denotes a hydroxyl group or a radical of the formula ##STR3## wherein R.sub.2 represents a substituent andn represents 0, 1, 2, 3 or 4,processes for their preparation, their use for pigmenting organic macromolecular substances and the material pigmented in this manner.