Disperse Dyes – Shade Card

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Disperse Dyestuffs are characterised with high degree of dispersion and are specially suitable for dyeing in various forms either alone or as a mixture with other fibres.

DYEING METHODS :

Disperse Dyes are applied to polyester fibres / fabrics by the following methods :

1. Carrier Dyeing at boil.
2. High temperature dyeing at 130°C.
3. Thermosol dyeing at 180-210°C. for 30-60 seconds.

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Description

Disperse Dyestuffs are characterised with high degree of dispersion and are specially suitable for dyeing in various forms either alone or as a mixture with other fibres.

DYEING METHODS :

Disperse Dyes are applied to polyester fibres / fabrics by the following methods :

1. Carrier Dyeing at boil.
2. High temperature dyeing at 130°C.
3. Thermosol dyeing at 180-210°C. for 30-60 seconds.

Carrier Dyeing Method :

The following general recipe is recommended :

  • X%     Disperse Dyestuff
  • 1 g/l     Dispersing Agent
  • Y g/l Carrier
  • M:L:R 1:10
  • pH adjusted to 5 with acetic acid.

Set the dyebath at 60°C. with dispersing agent and acetic acid to pH 5 and work the material for 10 minutes. Add emulsified carrier and treat the material for 10 minutes. Add dispersed Disperse Dyestuff and treat the material for 10 minutes at 60°C. and raise to boil within 45-60 minutes and dye at this temperature for 60-120 minutes depending on the depth of shade. The material is rinsed and reduction cleared.

2. High Temperature Dyeing Method.

The following general recipe is recommended : X%     Disperse Dyestuff 1 g/l     Dispersing Agent M:L:R: 1:10 pH adjusted to 5 with acetic acid. Set the dyebath at 60°C with dispersing agent and acetic acid to pH 5 and treat the material for 10 minutes. Add dispersed Disperse Dyestuff and treat for 10 minutes. Raise the temperature to 125-130°C. with 60 minutes and dye at this temperature for 60-90 minutes depending on the depth of shade. The bath is cooled to 90°C and drained at this tern

REDUCTION CLEARING

In order to achieve maximum brilliancy of shade and fastness properties especially in medium and deep shades, the dyeings are given a reduction clear treatment as follow :

The dyed goods are first given a hot rinse at 80″C and then treated as follow :

  • 4-5 g/l  Caustic Soda
  • 3-4 g/l  Sodium Hydrosuphite
  • 1 g/l  non-ionic detergent at 70°C
  • Rinse-acidify with acetic acid, rinse and dry.

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