Cyclopedia of textile work : a general reference library on cotton, woollen and worsted yarn manufacture, weaving, designing, chemistry and dyeing, finishing, knitting, and allied subjects (1907)
Chicago : American school of correspondence · leaf 206
as early as1873, that by fusing sodium sulphide with sawdust, and extractingthe fused mass with water, a dark brown colorincr matter could beobtained which dyed cotton directly a brownish color. Furtherexperimenting along this line led to the manufacture of a market-able coloring matter designated… … Fig. C3. Hydro-Extractor Underueatli Driven. ish shades which it produced possessed excellent fastness to light and washing. The process by which it is applied is somewhat different from that used for the more recent sulphur colors. It is as follows : The coloring matter is dissolved in boiling…
Textile industry · Textile fabrics
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