The coal tar colours of Farbwerke vorm. Meister, Lucius & Brüning, Hoechst on Main, Germany, and their application in wool dyeing (1910)
Farbwerke vorm. Meister Lucius & Brüning · New York, H. A. Metz · leaf 156
using the oxidation method of bleaching, the dyer is less limited in thenumber of colours suitable for dyeing; when bleaching with Sulphur dioxide, it is difficult toremove traces of this substance, which when present in the goods during dyeing, actsdestructively on many colours thus rendering it… … tinted with Methyl Violetafterwards stoved. The sulphuring is generally carried out in the so-called sulphur chamber or stove;this consists of a closed room in which Sulphur dioxide is generated by burning sulphur, orthe sulphur is burned in a separate oven and the gas conducted into the chamber.…
Dyes and dyeing
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