Abstract: Vat dyestuffs containing at least 80% by weight of one or more of the compounds of the formula ##STR1## wherein A and B independently of one another represent --NHV, --NHW or --NHZ,in whichV represents a radical of the formula ##STR2## W represents a radical of the formula ##STR3## and Z represents a radical of the formula ##STR4## R.sub.1 and R.sub.2 denote hydrogen or acylamino, but do not simultaneously denote acylamino,Hal denotes a halogen atom andn denotes the numbers 0, 1 or 2,yield deep and light-fast dyeings on cellulose fibres.They are advantageously obtained by the stepwise condensation of cyanuric chloride with corresponding aminoanthraquinones in the presence of a phenol.

Abstract: Nitrotrianthrimidecarbazoles of the formula ##STR1## in which the NO.sub.2 group is in the .alpha.- or .beta.-position and R.sub.1, r.sub.2 ; R.sub.3 and R.sub.4 designate hydrogen or halogen such as chlorine and bromine,their use as vat dyestuffs, a process for their preparation, and the use, as vat dyestuffs, of compounds which in the formula (I) have an NH.sub.2 group in place of the NO.sub.2 group.

Abstract: A process has been developed for the preparation of mixtures of dinitroanthraquinones with a high content of 1,5- and 1,8- dinitroanthraquinone by nitration with nitric acid in the presence of sulphuric acid with heating wherein anthraquinone, 1-nitroanthraquinone or a mixture of them is treated with about 1.5 to about 2.5 times the amount by weight of nitric acid, relative to the feed material, in the presence of about 0.75 times to twice the amount by weight, relative to nitric acid, of sulphuric acid, the temperature first being kept in the range from room temperature to about 50.degree. C. until at least 50% of the starting material or materials has been dinitrated, then adjusting the temperature to about 50.degree. C. to about 70.degree. C. to complete the dinitration.

Abstract: A process for the preparation of 1-amino-4-bromoanthraquinone-2-sulfonic acid or an alkali metal salt thereof by converting 1-aminoanthraquinone (which can be obtained by reduction of 1-nitroanthraquinone with sodium sulfide and/or sodium bisulfide or reaction of the 1-nitroanthraquinone with ammonia) by contacting the same with oleum at a temperature in the range of 90.degree. to 150.degree. C. optionally in the presence of an alkali metal sulfate and thereafter treating the so-sulfonated composition with bromine at a temperature in the range of from 60.degree. to 100.degree. C. 1-amino-4-bromoanthraquinone-2-sulfonic acid or an alkali metal salt thereof can be precipitated from the reaction mixture either by adjusting the sulfuric acid concentration thereof to 60 to 85 percent by weight or by stirring the reaction mixture into water, which optionally contains an alkali metal sulfate.

Abstract: Fabrics of synthetic fibres, preferably polyester fibres, can be printed in clear blue shades in accordance with the transfer printing principle if dyestuffs of the formula ##STR1## wherein R represents an alkyl radical with 2-6 C-atoms, are used.

Abstract: A process has been invented for the preparation of 1,5-dichloroanthraquinone which comprises reacting 1,5-dichloroanthraquinone with chlorine in the presence of at least 50% by weight of liquid phthalic anhydride, relative to the weight of 1,5-dinitroanthraquinone employed. The 1,5-dichloroanthraquinone is known to be a valuable starting material for the preparation of various dyestuffs.

Abstract: A process has been developed for the mononitration of anthraquinone to 1-nitroanthraquinone with nitric acid/sulphuric acid mixtures wherein anthraquinone is nitrated in a nitric acid/sulphuric acid mixture, in which the weight ratio of nitric acid to sulphuric acid is about 1:1 to about 2:1, in which the weight ratio of sulphuric acid to anthraquinone is about 0.5:1 to about 1:1 and in which the weight ratio of sulphuric acid to water is about 2.5:1 to about 5.5:1, the weight ratios relating to the sum of the materials employed, at temperatures in the range from about 45.degree. to 70.degree. C. until the anthraquinone content is less than 3% by weight, relative to the sum of the anthraquinone compounds.

Abstract: Use of the dyestuffs of the formula ##STR1## wherein R, Y and X have the meaning given in the description, for the dyeing of synthetic textiles, especially those of aromatic polyesters, by the transfer printing process.Prints obtained are distinguished by good fastness in use properties.

Abstract: A process has been invented for the isolation of 1,6- and 1,7-dinitroanthraquinone by treating mixtures containing these isomers with nitrobenzene.

Abstract: Anthraquinone dyestuffs of the general formula ##STR1## wherein IN EACH OF THE TWO ANTHRAQUINONE RADICALS SUBSTITUTED BY X, one X denotes chlorine and the other denotes hydrogen andR represents hydrogen or an optionally substituted benzoylamino group,And mixtures of the dyestuffs, in which the constituents of the mixture are 6-chloroanthraquinone and 7-chloroanthraquinone derivatives are suitable as a vat dyestuff for the dyeing of cotton in strong brown color shades with excellent fastness to light and vat processing.

Abstract: Use of the dyestuffs of the formula ##STR1## wherein R, Y and X have the meaning given in the description, for the dyeing of synthetic textiles, especially those of aromatic polyesters, by the transfer printing process.Prints obtained are distinguished by good fastness in use properties.

Abstract: Process for dyeing and printing synthetic fibre materials using compounds of the formula ##STR1## in which R represents an optionally substituted phenyl radical, as well as special new dyestuffs within the above formula.

Abstract: A crane boom pivotal about a horizontal axis is monitored as to loading over a prolonged period, e.g. a period of about 24 hours, by providing a position-dependent output representing the maximum permissible load moment on the boom at a particular position thereof relative to its support and a load sensor responsive to the instantaneous loading (load moment) of the boom. These two sensors provide inputs to a quotient-forming comparator whose output is applied to a 24-hour disk or tape recorder. The output of the quotient-forming comparator also controls a device for immobilizing the drive system for the boom, preventing it from exceeding its maximum permissible load.

Abstract: Compounds of the formula ##STR1## wherein R represents cycloalkyl or the ##STR2## group wherein R.sub.1 and R.sub.2 denote alkyl and Y denotes hydrogen, chlorine, bromine, amino, alkylamino, cycloalkylamino, aralkylamino, arylamino, acylamino or arylmercapto, with the proviso that the nitro group is in the 5- or 8-position of the anthraquinone nucleus if Y denotes hydrogenAs well as their production and their use for the dyeing of synthetic fibres.

Abstract: The invention relates to the preparation of partially known anthraquinone compounds of the formula ##STR1## wherein Z.sub.1 represents an optionally substituted hydrocarbon radical,Z.sub.2 represents hydrogen or alkyl, one X represents a chlorine atom and the other X denotes a hydrogen atom, by subjecting technical chloroanthraquinone mixtures to a fractional vacuum distillation and reacting the 1,6(1,7)-dichloranthraquinone fraction thereby obtained with amines of the formula HNZ.sub.1 Z.sub.2.Moreover the invention relates to novel compounds of the above formula wherein Z.sub.2 is H and Z.sub.1 is alkyl, alkenyl, aralkyl or cycloalkyl. They are good dyestuffs for synthetic fibres or dyestuff intermediates.

Abstract: A crane boom, pivoted at one end to the chassis or body of the crane, is swung about a horizontal axis by a hydraulic drive mechanism, e.g. a double-acting piston-and-cylinder arrangement. A control system for this boom comprises a device which monitors the instantaneous load moment on the boom and the maximum load moment permissible for the particular position of the boom (as a function of this position) and compares these two parameters in a quotient-forming comparator whose output is applied to a set point adjusting element via a logic circuit or connection device. The set point generating unit forms part of the actuating system for the crane.

Abstract: Compounds of the formula ##SPC1##In which R represents an alkyl, alkenyl, cycloalkyl or aralkyl radical, one X represents a nitro group and the other X represents hydrogen and their mixtures. They are very suitable for the dyeing of synthetic fibres, such as fibres of polyesters.

Abstract: Process for dyeing and printing synthetic fiber materials using compounds of the formula ##SPC1##In whichR represents an optionally substituted phenyl radical, as well as special new dyestuffs within the above formula.

Abstract: Dyestuffs which contain sulphonic acid groups and correspond to the formula ##SPC1##In which R.sub.1 and R.sub.2 denote lower alkyl radicals with 1 - 3 carbon atoms, which may be substituted; A means an optionally substituted aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic radical; n stands for 0, 1 or 2; and R.sub.4 denotes a sulphonic acid group when n = 0 and denotes hydrogen or a sulphonic acid when n = 1 or 2.The dyestuffs are eminently suitable for the dyeing and printing of natural and synthetic polyamide fiber materials.

Abstract: Compounds of formula ##SPC1##Wherein R.sub.1 and R.sub.2 independently of one another denote optionally substituted alkyl radicals with 1-3 C atoms and R.sub.3 represents hydrogen or an optionally substituted alkyl radical with 1-5 C atoms, as well as compounds of the formula ##SPC2##Wherein R.sub.4 represents an alkyl group which is optionally substituted by hydroxyl or alkoxy groups, and R.sub.5 and R.sub.6 represent hydrogen or an amino group which is monosubstituted or disubstituted by a straight-chain alkyl group or a cycloalkyl group, with the proviso that R.sub.5 and R.sub.6 do not simultaneously represent hydrogen, and processes for their production.