Application of dyestuffs to textiles, paper, leather and other materials (1920)
Matthews, J. Merritt (Joseph Merritt), 1874-1931 · New York, Wiley · leaf 213
of Alkali Blue.—The color-acids of a few of the acid dyes are insol-uble in water, and therefore acid cannot be added directly to the dyebath, but must beemplojed in a separate bath. This method is represented in the application of AlkaliBlue. Dj-e a test skein of woolen yarn in a bath of 300 cc.… … FiG. 135.—Printing Machine for Slubbing. (Vigoureux System.) ing 300 cc. of water and 5 per cent of sulphuric acid; enter at 160° F., bring to the boiland continue for twenty minutes. Notice that the full blue color of the dje is notdeveloped until the material is treated with the acid bath. Borax…
Dyes and dyeing · Textile fabrics
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