Patent GB-191019545-A (GB)
Title: Manufacture and Production of New Azodyestuffs.
Inventor: NEWTON PHILIP ARTHUR
IPC: C09B39/00
Filed: 1910-08-20
Granted: 1911-07-20
Abstract: 19,545. Newton, P. A., [Farbenfabriken vorm. F. Bayer & Co.]. Aug. 20. Samples furnished. Azo dyes.-Monazo dyes are obtained by combining the diazo compounds of aminobenzoyl-2- amino-5-naphthol-7-sulphonic acids or sulphaminobenzoyl-2-amino-5-naphthol-7-sulphonic acids or their substitution products with the symmetrical area of 2-amino-5-naphthol-7-sulphonic acid or with 5:5<1>-dioxy-2:2<1>-dinaphthylamine-7:7<1>-disulphonic acid. Primary disazo dyes are obtained by combining two molecular proportions of the above diazo compounds or a mixture thereof, or one molecular proportion of one of these compounds and one molecular proportion of another diazo body such as diazotized p-nitraniline, with one molecular proportion of one of the above second components. The products dye cotton orange-red, red, or bluish-red shades, which can be developed on the fibre with diazotized p-nitraniline, giving scarlet and bordeaux shades. The following products are specified: - monoazo dyes from, 2-p-aminobenzoylamino-5-naphthol-7-sulphonic acid and the urea of 2:5: 7-acid, 2-p-sulphaminobenzoylamino-5-naphthol-7-sulphonic acid or 2-m-aminobenzoylamino-5-naphthol-7 -sulphonic acid and 5:5<1>-dioxy-2:2<1>-dinaphthylamine - 7 : 7<1> - disulphonic acid, and the disazo dye from 2-m-sulphaminobenzoylamino-5-naphthol-7-sulphonic acid and the urea of 2:5:7-acid. Specification 22,097/10 is referred to. According to the Provisional Specification, azo dyes are obtained by combining diazotized aminoarylacidylaminonaphthols or their sulphonic acids, such as aminobenzoylaminonaphthols, sulphaminobenzoylaminonaphthols, chloraminophenylcarbonylaminonaphthols, aminomethoxyphenylcarbonylaminonaphthols, aminophenylaminocarbonylaminonaphthols or their sulphonic acids, with azo dye components or with azo dyes capable of coupling; dyes so obtained can be further diazotized and combined with components. All these products can be combined on the fibre with diazotized p-nitraniline. The following products are specified: -monoazo dyes from, paminobenzoyl-2:5:7-acid and m-phenylenediamine, acetoacetic ester, the urea of 2:5:7-acid or 5:5<1> - dioxy - 2 : 2<1> - dinaphthylamine - 7 : 7<1> - disulphonic acid; m-aminobenzoyl-2:5:7-acid and benzoyl-2:5:7-acid, 2:5:7-acid, 2:8:6-acid, or 1:3:6-acid ; primary disazo dyes from, p-aminobenzoyl-2:5:7-acid, aniline or dehydrothiotoluidine sulphonic acid and the urea of 2:5: 7-acid; two molecules of m-aminobenzoyl-2:5:7-acid and the urea of 2 : 5 : 7-acid ; sulphaminobenzoyt-1:6- aminonaphthol, aniline, and the urea of 2:5:7- acid; sulphaminobenzoyl-2:5:7-acid, alpha-naphthylamine, and 5:5<1>-dioxy-2:2<1>-dinaphthylamine-7: 7<1>-disulphonic acid; a secondary disazo dye from m-sulphaminobenzoyl-2:5:7-acid, m-toluidine, and benzoyl - 2:5:7 - acid; trisazo dyes from aminoazobenzene sulphonic acid, p-aminobenzoyl-2:5:7-acid, and the urea of 2:5:7-acid; 1-naphthylamine-3:6-disulphonic acid, alpha-naphthylamine, 5:5<1>-dioxy-2:2<1>-dinaphthylamine-7 7'-disulphonic acid, and m-aminobenzoyl-2:5:7- acid ; m-aminobenzoyl-2:5:7-acid, 1-naphthylamine-7-sulphonic acid, cresidine, and p-toluyl- 2:5:7-acid.