How to One-Bath Bleach & Dye Cellulosics using Orcolitefast™ and Orcomine™ Dyes


    • Prepare and pre-scour goods as necessary.
    • Enter goods into dyebath set at 100°F(38°C) with 0.5% on weight of goods(owg) and circulate for 10 minutes.
    • Add the following chemicals and run for 15 minutes at 100F(38C):
      • 3-4 %                        Hydrogen Peroxide 35% on weight of bath(owb)
      • 0-1.5 % owb            Sodium silicate
      • 25-0.5 % owb         Caustic Soda 50% (less than pH of 9 if processing rayon)
      • 5-1.0 % owg           Orcoterge ALK-N Conc™
      • 25% owb                 Peroxide Stabilizer
    • Add properly prepared Orcolitefast™ or Orcomine™ direct dyes and run for 10 minutes.
    • Slowly raise temperature to 205°F(96°C) and run for one hour.
    • Add 1-10 g/L, dependent on depth of shade, of Glauber’s Salt 20 minutes after reaching 205°F and then again after another 20 minutes for exhaustion of the dye.  More salt additions might be necessary for darker shades.  If levelness is a problem, the number of salt additions may be increased with the proportional decrease amount of salt.
    • Cool back to 120°F(49°C).
    • A cold “salt-rinse” might be necessary to help minimize dye wash-off/migration.
    • Rinse cold until clear.
    • After-fix if necessary using Orcofix EC™, Orcofix F-NF™, or Orcofix DS™ depending on your requirements.

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