Atmospheric dyeing of polyester calls for low-to-medium energy Orcocilacron™ disperse dyes with the addition of a carrier to further swell the fiber allowing increased penetration of the dye into the polyester fiber.

• Prepare and pre-scour polyester.
• Enter goods in bath at 120°F(49°C) containing:
  • Acetic to a pH of 5.5 – 6.0
  • 2.0% owg    Anionic Wetting Agent
  • 1.0 % owg    Orco Polylev B-400™
  • 6.0% owg     Orco Dye Carrier LLRS-2™  (dye carrier and dye solution should be mixed into bath separately)
• Circulate for 10 minutes and add
  • X% owg Orcocilacron™ dyes – use proper disperse dye preparation procedure
• Raise temperature to 205°F(96°C) and run for 50-120 minutes for maximum penetration.
• Cool back to 180°F(82°C) and rinse well at this temperature.
• Cool back to 120°F(49°C) while rinsing.
• After-scour(after-clear) with:
  • • 2 – 4% owg Reducing Agent such as Sodium Hydrosulphite
      at a temperature of 140°F(60°C) and run for 15 -20 minutes.
    • Drop bath and rinse well.

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