摘要:
The invention relates to water-insoluble quinophthalone dyestuffs of the formula ##STR1## in which T represents W--Ar or ##STR2## and Ar denotes aryl,W denotes oxygen, sulphur or N--R,R denotes hydrogen or alkyl,A denotes alkylene, O R.sub.1 denotes alkyl or aryl,R.sub.2 denotes hydrogen or alkyl,X denotes halogen, alkyl, alkoxy, nitro or acylamino,Y denotes hydrogen or halogen,Z denotes hydrogen, alkyl or halogen andn denotes a number from 0 to 3The new dyestuffs and their mixtures are distinguished by good affinity to polyester fibres and good general fastness properties.
摘要:
In the reaction of a nitroanthraquinone with ammonia in a solvent at elevated temperature to produce the corresponding aminoanthraquinone, the improvement which comprises effecting the reaction in the presence of an ammonium halide. Advantageously, the nitroanthraquinone is an .alpha.-nitroanthraquinone, the ammonium halide is at least one of ammonium chloride and ammonium bromide, and the solvent comprises at least one member selected from the group consisting of water, nitrobenzene, a glycol, an acid amide and sulfolane.
摘要:
Quinoline derivatives, especially those of the formula ##STR1## wherein X represents halogen, nitro or CF.sub.3,Z represents hydrogen, alkyl or aryl,Y represents hydrogen, OH, CN, COR or SO.sub.3 H,R represents alkyl, alkoxy or aryl andn represents an integer from 0 to 4,are obtained in high yields when corresponding aromatic orthodichloromethyl isocyanates are converted by hydrolysis and decarboxylation into the corresponding ortho-aminoaldehydes and these are subjected to a condensation reaction with carbonyl compounds containing an active .alpha.-methylene group.The process products are starting materials for dyestuffs, insecticides and others.
摘要:
The invention relates to a novel process for the preparation of 1-acylamino-5(8)-chloroanthraquinones, which are starting materials for the preparation of vat dyes. It is characterized in that 1,5(8)-dichloroanthraquinones is reacted with ammonia at temperatures of 190.degree. to 240.degree. C., the amino groups in the reaction mixture are completely acylated and the more sparingly soluble diacylaminoanthraquinone is separated off from the more readily soluble monoacylaminochloroanthraquinone.The new process yields reaction products which are purer and cheaper than those which are obtained by conventional methods. Moreover there are smaller waste water problems.
摘要:
Reactive dyestuffs of the formula ##STR1## WHEREIN R.sub.1, R.sub.2, R.sub.3, X, Y and Z have the meaning given in the description and their use for the dyeing and printing of materials which contain hydroxyl groups and materials which contain N, such as cotton, wool and the like, by the customary processes.