Description
Our AnoDye Blue G is an industrial standardised, water soluble dyestuff for the chemical adsorptive dyeing of anodised aluminium. Aluminium Ano Dye Blue G provides blue shades.
Technical Characteristics
| Properties | |
| Chemical Character | Azo-dyestuff, metal complex, No heavy metal |
| Appearance | fine granules |
| Density | 600 g/l |
| Solubility in water | 5 g/l at 20°C |
| Storage stability | good , in closed original containers |
Application conditions
Concentration, dyeing temperature and time
| Concentration | Dyeing Temperature | Dyeing Time | |
| Light Shades | 0,1 – 0.5 g/l | 25 – 60°C | 2 – 10 min |
| Medium shades | 0,5 – 1.0 g/l | 25 – 60°C | 5 – 15 min |
| Dark shades | 1,0 – 3,0 g/l | 25 – 60°C | 20 – 30 min |
Special Remarks
-
- This dyestuff dyes very extensively
- We can’t stress enough to remove all acid residues clinging to the work and to reduce acid retention in the oxide pore itself. Rinse work pieces thoroughly after anodising. A minimum of two rinses is recommended, with the second rinse at over-flow. The dye baths are sensitive to sulphate and aluminium; anodised objects should therefore be rinsed thoroughly before dyeing..
- The best dye-bath stability is achieved by :- cold dyeing (20 – 25 °C)
– a pH not below 5,5
– a high dye concentration (1 – 3 g/l)
- Water sealing lightens the dyeing and it becomes slightly yellowish.
- Ammonium compounds should not be used for controlling of the pH or to buffer dye bath solution.
- The presence of ammonium compounds in the sealing solution may cause leaching and loss of colour.
- Use sodium acetate for dye buffer.
- Dye may be dissolved separately outside the dye bath. Use demineralized water for better dye bath stability.
- The life of dye bath is reduced by water containing ammonium ions.
