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Arthur George Bloxam
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16,876. Bloxam, A. G., [Chemische Fabrik Brugg Akt.-Ges. vorm. Dr. Zimmermann & Co.]. Aug. 22. Dyes, artificial.-Sulphurized dyes, which dye cotton directly greenish-black shades from hot baths containing sodium sulphide, sodium carbonate, and common salt, or sodium sulphate, are produced by heating benzene mono-sulphonate, a toluene monosulphonate, or a xylene monosulphonate, or a corresponding sulphonic acid, sulphonic chloride, or sulphonamide, with sulphur and an alkaline sulphide, or with a polysulphide, or with sulphur and an alkali, ultimately to 280‹ or 300‹ C. The mass is used for dyeing as it is, or it is dissolved in water and the dye-stuff is precipitated from the solution by an acid.
GB190116876D1901-08-221901-08-22Manufacture of Greenish Black Sulphurised Directly Dyeing Dyestuffs for Cotton.
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