Alumon Brown A2RL

Alumon Brown A2RL

Alumon Brown A2RL is a dye in powder form and gives copper shade on anodized aluminum, It has good fastness to light, Weather.

Chemical Properties
Physical Form Dry Powder
appearance Dark Brown Powder
Chemical description Metalized azo dye.
Light Fatness Good
Heat Fastness Good
ANODIZING RECOMMENDED
Applicable condition are as:
coating thickness 12 - 25 microns
Concentration 4 - 5 g/l
Temperatures 55 – 60 C
pH Range 5.5 +- 0.5
Buffering the bath must be buffered with
8 g/l sodium acetate tri hydrate
0.4 ml/l acetic acid for pH 5.5
Time 10-15 Minute.
Water Quality preferably de –ionized;

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.