Application of dyestuffs to textiles, paper, leather and other materials (1920)
Matthews, J. Merritt (Joseph Merritt), 1874-1931 · New York, Wiley · leaf 560
tby the use of suitable dyeings with the substantive cotton colors and theneutrai dyeing acid colors for wool a great variety of effects are possible.10. Two-color Effects.—For the production of two-color effects it isbest to employ the two-bath method, dyeing the wool first in an acid bathand then… … Fig. 268.—Silk Finishing Machine. methods may also be employed, using acid dyes which may be applied in aneutral bath together with substantive dyes; but this method gives lessbrilliant colors, though it is possible to obtain fairly good effects if theneutral dyeing acid color is first added alone…
Dyes and dyeing · Textile fabrics
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