Application of dyestuffs to textiles, paper, leather and other materials (1920)
Matthews, J. Merritt (Joseph Merritt), 1874-1931 · New York, Wiley · leaf 448
Copperas vat 25 per cent Zinc vat 10 per cent Hydrosulphite vat 1 to 2 per cent The Hochst Co. recommends the following method for preparing astock vat: Mix 25 lbs. of Indigo paste (20 per cent) with 1 gallon of luke-warm water, then add 1| gallons of caustic soda lye (76° Tw.); stir well,heat to… … Fig, •mmmmmmmmmmmmmmm 222.—Dipping Apparatus for Indigo Vat yellow after standing one hour a further addition of hydrosulphite must bemade. In starting a new dyevat first add 1^ ozs. of hydrosulphite for each100 gallons of water, stir up and allow to stand for two hours, then add the cold liquor is…
Dyes and dyeing · Textile fabrics
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