Abstract:
A process for the manufacture of blue anthraquinonoid disperse dyes based on 1,5(1,8)-diamino-4,8(4,5)-dihydroxyanthraquinone, wherein 1,5(1,8)-dinitro-4,8(4,5)-dimethoxy-anthraquinone or mixtures of these compounds are reduced, in 20 to 45% strength by weight oleum, with sulfur at -10* to +50*C in the presence of boric acid, and the product of the reduction is brominated in sulfuric acid or 0 to 5% strength by weight oleum or in organic solvents until the product thus obtained contains 12 to 30% by weight of bromine. Dyes which give deep and, in particular, light-fast dyeings, above all on fibrous materials consisting of linear polyesters, are obtained.
Abstract:
IN WHICH ONE X is chloro and the other X is hydrogen or each X is chloro; and WITH AIR OR OXYGEN OR WITH 10 TO 30% BY WEIGHT NITRIC ACID TO FORM THE CORRESPONDING CARBOXYLIC ACID FOLLOWED BY CYCLIZATION OF THE LATTER. 1-CHLOROANTHRAQUINONE-2,3-DICARBOXYLIC ANHYDRIDE OR 1,4-DICHLOROANTHRAQUINONE-2,3-DICARBOXYLIC ANHYDRIDE IS OBTAINED IN A GOOD YIELD. Each is a valuable dye intermediate.
A process for the production of an anthraquinone-2,3dicarboxylic anhydride bearing chlorine as a substituent in the 1-position or in the 1- and 4-positions by oxidation of a trimethyl compound of the formula:
Abstract:
The production of 3,6-dihalodiphenylalkanes by reaction of a diphenylalkane with a halogen and the novel 3,6dihalodiphenylalkanes themselves. The new compounds which can be prepared according to the process of the invention may be used as dispersing agents in dye/styrene mixtures and also as dyeing auxiliaries. They are also valuable starting materials for the production of dyes and pesticides.
Abstract:
Azo disperse dyes containing an N-substituted 3-amino-6nitrophthalimide as diazo component and an aniline coupling component. The dyes give yellow to blue colorations particularly on polyesters; these colorations have good fastness properties. In which
Abstract:
1,4-DIAMINOANTHRAQUINONES BEARING IN POSITION 2 A 1,2,4OXADIAZOLE GROUP WHICH IS SUBSTITUTED IN POSITION 3 BY AN AROMATIC OR ALIPHATIC RADICAL. These anthraquinone derivatives are valuable blue disperse dyes for use in dyeing and printing synthetic textile materials.
Abstract:
1442670 1-Nitroanthraquinone BASF AG 30 Oct 1973 [31 Oct 1972] 50329/73 Heading C2C 1-Nitroanthraquinone is separated from a mixture containing 1-nitro-anthraquinone, optionally in admixture with 2-nitroanthraquinone together with one or more dinitro-substituted anthraquinones, by treating the mixture to effect reaction of the dinitroanthraquinone(s) with a compound containing one or more methylene groups activated by the presence in the compound of one or more carbonyl groups, the reaction being effected in the presence of from 0À1 to 10% by weight based on the total weight of the starting mixture of an initiator for the reaction and in an aprotic polar organic solvent which optionally contains water in an amount of not more than 10% by weight to form a mother liquor containing in dissolved form the material resulting from the reaction together with any 2-nitroanthraquinone present in the starting mixture and containing 1-nitroanthraquinone in undissolved form. The initiator is preferably a compound which yields nitrite, halide, thiocyanate, alcoholate or phenolate ions and the compounds containing activated methylene groups are preferably aliphatic, cycloaliphatic, araliphatic and heterocyclic unsubstituted or substituted ketones, beta-hetocarboxylic esters or amides, betacarbonyl compounds and cyclic carbonamides.
Abstract:
The invention comprises dyes of the formula wherein X is amino, or alkylamino; Y is hydrogen, amino, alkylamino, hydroxy, piperidinyl or alkylmercapto; Z is a linear or branched chain alkyl of up to 8 carbon atoms which may bear alkoxy, cyano, unsubstituted or substituted carbamoyl or carbalkoxy groups, or denotes an aralkyl radical or the propinyl group. The compounds are prepared by reacting a carboxylic hydrazide of the formula where Z11 is No2 or as Y, either with CS2 in a alkaline reacting agent, and simultaneously or subsequently reacting with an alkylating agent which yields Z, or with a mercapto formamide chloride of the formula where R1 and R2 are substituted or unsubstitute alkyl or aryl radicals or together with the nitrogen form a piperidinyl or morpholino ring, and subsequently reducing the nitro group to an amino group. The mercapto formamide chloride may be formed in situ by treating a dithiocarbamic ester of the formula with chlorinating agents.
Abstract:
Anthraquinone dyes of the formula wherein X is -NH2 or -OH, Y is a -NH2, alkylamino, aralkylamino, arylamino, morpholyl, -OH, alkoxy, alkyl- or aryl-mercapto group and R is an alkyl, alkyl ether, alkyl-mercapto, alkoxy, alkylamino, aralkylamino or arylamino group or an aromatic radical possibly substituted by halogen atoms, alkyl or alkoxy groups are employed to dye or print materials of aromatic polyesters. The dyes may be prepared according to the methods described in Specifications 789,759 and 986,045.ALSO:Dyeing or printing aromatic polyester materials is effected by applying a composition containing as dyestuff: wherein X is -NH2 or -OH, Y is a -NH2, alkylamino, aralkylamino, arylamino, morpholyl, -OH, alkoxy, alkyl- or aryl-mercapto group and R is an alkyl, alkyl ether, alkylmercapto, alkoxy, alkylamino, aralkylamino or arylamino group or an aromatic radical possibly substituted by halogen atoms, alkyl or alkoxy groups. The dyes may be applied in finely divided form at 95-140 DEG C. or printed on and later steamed. Carriers may be coemployed. Examples are given.
Abstract:
Diazotisable aromatic amines for use in the preparation of azo dyes (see Division C4) are obtained by halogenating, preferably chlorinating 2-nitroaryl-4, 6-dihydroxytriazines -(1, 3, 5), exchanging a halogen atom for the radical of an amine and catalytically reducing the nitro group. 2-(3-aminophenyl) -4- morpholino 6-choro-1, 3, 5-triazine is obtained by chlorinating 2-(3-nitrophenyl)-4 6-dihydroxy-1, 3, 5-triazine), reacting the product with morpholine and reducing the product with hydrogen using a Raney nickel catalyst. 2-(3-aminophenyl) -4- phenylamino-6-chloro-1, 3, 5-triazine is prepared by a similar process. Specification 874,519 is referred to.ALSO:The invention comprises water-soluble monoazo, disazo or polyazo dyes containing one or more water-solubilizing groups, preferably one or more sulphonic acid groups and having the general formula in which A denotes an unsubstituted aromatic radical or a substituted aromatic radical, X denotes a halogen atom, preferably a chlorine or bromine atom or the group wherein R1 denotes an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radical or a hydrogen atom, R2 denotes an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radical, or the radicals R1 and R2 together with the nitrogen atom may form a heterocyclic ring which may also contain other hetero atoms and E denotes the radical of a coupling component which may in turn contain an azo group and also once again the radical The dyes are produced by reacting a diazotized 2 - aminoaryl - 6 - halo - 4 - amino - 1,3,5 - triazine which is substituted at the amino nitrogen in the 4-position with a compound capable of coupling. Disazo dyes are obtained by converting monoazo dyes containing a diazotizable amino group into diazo compounds and coupling with suitable coupling components or by reacting monoazo dyes capable of coupling with any aromatic diazo compounds. Coupling components specified include various hydroxynaphthalene sulphonic acids, amino hydroxynaphthalene sulphonic acids and N-acyl derivatives thereof and such pyrazolones as 1-(2-methyl - 4 - sulphophenyl) - 3 - methyl -, 1 - (2 - chloro - 5 - sulphophenyl) - 3 - methyl -, 1 - phenyl - 3 - carboxy - pyrazolones (5). The diazo components may be obtained by halogenating 2-nitro-aryl 4,6-dihydroxytriazines (1, 3, 5) exchanging a halogen atom for the radical of an amine and reducing the nitro group (see Division C2) Amines specified from which the radical NR1R2 may be derived include aniline, morpholine, piperidine and thiomorpholine-dioxide. Examples are furnished. The dyes are suitable for dyeing wool, silk, synthetic polyamides, polyurethanes, leather and natural or regenerated cellulose. Specification 874,519 is referred to.