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 124
the dyebaths, therefore an addition of about 1 /* oz (100 g) Soda per lb.(ko.) dyestuff to the dyebaths (at the time of dissolving) suffices. The passage through the dyebath must last 3—4 minutes and the goods,when taken out, must be allowed to lie for about an hour before washing. The three… … Fig. 33. As seen from fig. 33 the apparatus consists of a small roller cistern, con-nected with a working broad-washing machine, containing powerful agitators. The dry cloth passes within 30 seconds through the colour liquid in theroller cistern which is kept at boiling temperature by indirect…
Coal-tar colors · Dyes and dyeing
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