GB113141A - Manufacture of New Copper Compounds of Substantive Azodyestuffs. - Google Patents

Abstract

113,141. Imray, O., (Soc. of Chemical Industry in Basle). Feb. 8, 1917. Disazo dyes, copper compounds of. The substantive disazo dyes obtained by coupling a tetrazotized p-diamine of the diphenyl series, having at least one alhyloxy group in o-position to an amino group, with one molecular proportion of 2 : 5 : 7-aminonaphthol sulphonic acid or an alkyl, aryl, or acidyl derivative thereof and one molecular proportion of a 1 : 8-aminonaphthol sulphonic acid or a derivative thereof, or with two molecular proportions of 2 : 5 : 7 - acid or a derivative thereof, are converted by treatment with copper or copper compounds into soluble copper compounds which dye cotton, wool, silk, mixed goods, straw, wood, paper, leather, etc.; they may also be used in printing or for the manufacture of lakes. Examples are given of the production of copper compounds of the dyes obtained from the following sets of components :- dianisidine, 1 - acetylamino - 8 - naphthol - 2 : 4 - disulphonic acid and phenyl - 2 : 5 : 7 - acid; dianisidine, 1 : 8 : 2 : 4 - acid, and phenyl - 2 : 5 : 7 - acid; dianisidine, acetyl - 1: 8 : 3 : 6 - acid, and acetyl-2 : 5: 7 - acid; dianisidine and two molecules of phenyl - 2 : 5 : 7 - acid; diphenetidine, 1 : 8 : 2 : 4 - acid, and phenyl - 2 : 5 : 7 - acid; 3-ethoxybenzidine, 1 : 8 : 3 : 6 - acid, and phenyl - 2 : 5 : 7 - acid; 6-methyl - 3 - ethoxybenzidine, 1 : 8 : 2 : 4 - acid, and phenyl 2 : 5 : 7 - acid; 5 - bromdianisidine, acetyl - 1 : 8 : 2 : 4 - acid, and phenyl - 2 : 5 : 7 - acid; 3 - ethoxybenzidine - 6 - sulphonic acid, acetyl - 1: 8: 4 - acid, and phenyl - 2 : 5 : 7 - acid. Specifications 12250/15, 12932/15, 101,601, 102,881, and 103,251 are referred to. 5 - Bromdianisidine is prepared by treating dianisidine with sodium bromide in sulphuric acid solution.