Dispersant K 850

Dispersant K 850 is an APEO and Formaldehyde free, highly effective dispersant for anionic pigments and extenders in aqueous systems. The product is compatible with all common synthetic emulsions, creates little foam and is effective in a wide pH range. The use of Dispersant K 850 is very favourable in case of storage stability of highly filled emulsion paints and mostly avoids thickening.

• Appearance: Clear amber liquid
• Composition: Sodium salt of polycarboxylic acid
• Solid Content % ± 0,5: 30
• Viscosity 25°C LVT 2/60: 350 cps max.
• Density at 20°C: Approx. 1,2 g/ml
• pH: 9.0 – 10.5
• Solubility in Water: Soluble in Water
• Storage Stability: Protect from freezing

Dispersant K 850 is generally added in emulsion paints with 0,1 – 0,5% calculated on pigments / extenders. The actual quantity required essentially depends on the type of the pigments / extenders used and should be determined from case to case (determination of the optimum quantity of the dispersing agent). Dispersant K 850 can be added alone or combined with polyphosphates (e.g. Calgon N). For combined addition mixing proportions of 1:2 to 2:1 has proven to be effective. If more than 1% of Dispersant K 850 is added, it should be tested whether the water sensitivity of the film increases. In emulsion paint procedure, Dispersant K 850 normally has to be added before addition of pigments / extenders. If necessary, Dispersant K 850 can also be added later as a post-additive.