The coal tar colours of Farbwerke vorm. Meister Lucius & Brüning : Hoechst on Main : and their application in dyeing cotton and other vegetable fibres (1907)
Farbwerke vorm. Meister Lucius & Brüning · New York : H.A. Metz · leaf 66
nd closing different valves, thecirculation is now reversed, viz. the liquidpressed through the material from withinto without. Each manipulation takes about1 min., and these are repeated until thedesired shade is obtained. For this processthe Dianil and Thiogene Colours are suitable.The thicker… … Fig. 9.
Coal-tar colors · Dyes and dyeing
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