Organic Alumino dyes
New colour impulses for the anodising sector
What are organic Alumino dyes used for?
Organic Alumino colourants are available in powder form, in a huge variety of shades and a wide range of light-fastness rates. Originally developed for the leather, textile and paper industries, the dyes have been advanced and optimised to ensure they are suitable for pre-treating aluminium. Alumino dyes offer new colour stimuli for indoor and outdoor applications. The dyeing process is carried out as usual, subsequent to anodising and rinsing.
Currently available dye colours
Alumino dye
Colour character
Colour
Alumino HF Black BFW
Reddish-blue black
Alumino HF Navy Black 200%
Bluish black
Alumino HF Black 2 F
Greenish black
Alumino HF Black B
Light bluish black
Alumino HF Red
Intense red
Alumino Brilliant Lemon Yellow BF
Intense neon yellow
Alumino Olive Brown HR
Olive brown
Advantages:
Numerous colour shades available
Alumino dyes for anodised surfaces are already applicable at ambient temperature
Rapid dyeing is possible in many cases
A variety of shades from light to dark can be achieved by adjusting the bath parameters
Alumino dyes produce intense colour hues
Various degrees of light fastness are possible, depending on the intended use (indoor/outdoor)
Economical operation due to low make-up concentration
Photometric determination technique for bath monitoring
Alumino dye
Colour character
Colour
Alumino Brown H
Reddish brown
Alumino HF Blue HR
Intense blue
Alumino HF Green H
Forest green
The colours listed above only represent an extract from the currently available range of dyes. The colour fields are intended as an approximate assessment of the various colours.
Typical bath parameters for dyeing surfaces in organic black
Alumino HF Black BFW for an intense reddish-blue black color:
Concentration:
5 g/l Alumino HF Black BFW
pH value:
5.0 – 6.0
Bath temperature:
25 - 45 °C
Dyeing time:
1 – 10 minutes
Light fastness:
Rating > 9 (ISO 2135, for intense black; 500h)