Application of dyestuffs to textiles, paper, leather and other materials (1920)
Matthews, J. Merritt (Joseph Merritt), 1874-1931 · New York, Wiley · leaf 395
be lost in dyeing.Only concentrated sodium sulphide should be used with the Sulphur Yellows, and thebest method for dissolving these dyes is to first stir them up into a paste with their ownweight of caustic soda, and then to add the sulphide and hot water. t According to a patent of the Berlin… … Fig. 193.—Dyeing on Bent Sticks forSulphur Dyes. DISSOLVING SULPHUR DYES 377 soluble leuco-derivative. In the case of the black and brown dyes, how-ever, this reduction to a leuco-compound is not so apparent. On the other hand, in the case of Sulphur Black, for instance, the coloris taken up by the…
Dyes and dyeing · Textile fabrics
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