Application of dyestuffs to textiles, paper, leather and other materials (1920)
Matthews, J. Merritt (Joseph Merritt), 1874-1931 · New York, Wiley · leaf 240
ach skein and plait it with some strands of white woolen yarn, andthen scour the samples so prepared in a lukewarm dilute soap solution containing about5 grams of soap per liter. Ne.xt wash in fresh water, and allow the two tests to dry, andcompare them as to the loss of color and as to the amount… … Fig. 144.—Warp Dyeing Machine for Long Chain System.(H. W. Butterworth & Sons Co.) after-treated, however, with solutions of metallic salts (such as chrome) the color changesto black and becomes very fast. Prepare a bath containing 300 cc. of water, 4 per centof sulphuric acid, 20 per cent of…
Dyes and dyeing · Textile fabrics
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