The manufacture of vat dyestuffs of the anthraquinone series
Реферат: Anthraquinone vat dyes are prepared by heating in the absence of such compounds as under the reaction conditions would split off hydrogen chloride to any substantial extent, a compound of the formula: Aryl-CO-NR-Aryl, wherein at least one aryl is an anthraquinonyl residue and both aryl residues contain a halogen atom in o-position to the CO- or NR-group respectively, R standing for hydrogen or a hydrocarbon radicle, with such a quantity of copper as is sufficient to combine with two halogen atoms with the formation of cupric halide. Solvents or diluents may be present, preferably those forming addition products with copper salts, such as pyridine or quinoline. The products are phthaloylphenanthridones. In examples, the following compounds are condensed with copper in nitrobenzene, pyridine quinoline or mixtures of these: 1-(o-bromobenzoyl)-methylamino - 2 - bromanthraquinone (prepared from 1-methylamino-2-bromanthraquinone and o-bromobenzoyl chloride), 1-(5-nitro - 2 - bromobenzoyl)-methylamino- 2 - bromanthraquinone (prepared from 1-methylamino-2-bromanthraquinone and 2-bromo-5-nitro-, benzoyl chloride, 1-(5-nitro-2-chlorbenzoyl)-methylamino - 2 - bromoanthraquinone, 2-(5 - nitro - 2 - brombenzoyl) - methylamino-1-chloranthraquinone, the condensation products of 1-amino-2-bromanthraquinone with 2-bromoanthraquinone - 1 - carboxylic acid chloride and 2-chloranthraquinone-3-carboxylic acid chloride, the condensation products of 1-methylamino - 2 - bromanthraquinone with 2 - bromo - and 2 - chlor - 1 - anthraquinone carboxylic acid chloride and 1-chloranthraquinone - 2 - carboxylic acid chloride. Reference is made to the reduction and benzoylation of those of the above products containing nitro groups. The products dye cotton yellow shades. Specification 8704/11, [Class 2 (iii)], is referred to.
Improvements in the manufacture and production of vat dyestuffs
Номер патента: GB444812A. Автор: . Владелец: IG Farbenindustrie AG. Дата публикации: 1936-03-23.