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Alumon Black 415
Alumon Black 415 is black dye suitable for exterior application for Greenish Grey to Deep Black. The dye bath is stable against contamination by drag-in of sulfates or aluminum salts from the anodizing electrolyte.
| Physical appearance | Black to dark grey powder |
| Chemical description | metalized azo dyes |
| Light Fatness | 8+ |
| Heat Fastness | Excellent |
| Anodic coating thickness | 10-25 microns |
| Concentration | 2 - 8 g/l |
| pH | 4.5 - 6.0 |
| Buffering (If Required) | upto 8gm/Litre Sodium Acetate Upto 0.4ml/litre Acetic Acid |
| Dye bath temperature | 50° - 60° C |
| Immersion time | 20 sec – 20 minutes (depends upon shade) |
SEALING:
The dyed oxide film must be properly sealed properly using a hot sealing salt ANO SEAL CA-350 for best result.
Other Recommendation:
- Ammonium compounds shall 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 color.
- Use sodium acetate for dye buffer.
- Adequate care to be taken for proper rinsing to control drag-in for optimum tank life.
- 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.
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