Improved fillers dispersion
A good dispersion of fillers and pigments
is the requisite condition to achieve good stability
and for good shelf life
to the finished coating system. It also contributes to the required film properties
such as opacity, colour strength and gloss level
The process of dispersion of the fillers and pigments includes operation time, the use of the appropriate mechanical stirring equipment and the use of a dispersing agent.
The below graph shows the benefit of using dispersing agents to make slurries
. The dispersibility is considerably facilitated allowing an increase of filler content, while achieving easily pumpable slurries
(low viscosities), so it's very important to choose the right dispersing agent!
Figure 1: Dispersion of CaCO3 into water
Ecodis™ and Coadis™ types dispersing agents
from the Coatex range are the most recommended valuable tools facilitating the deflocculation of fillers and pigments.
The choice of the right dispersing agent
is also required to optimize the dispersion state.
Optimal dosage of dispersing agent
is determined by carrying out preliminary deflocculation curves. The lower the viscosity, the better the dispersion state and the better the predictable storage stability
Product recommendation per performance and formulation type:
- High loading in fillers: Ecodis™ P 50 / P 90
- High loading in oxide pigments and fillers: Coadis™ BR 3 / Coadis™ BR 4*
- High loading in TiO2 + fillers: Ecodis™ P 30
- TiO2 dispersion for Semi gloss/Gloss: Coadis™ 123 K
- TiO2 dispersion for Gloss: Coadis™ BR 85
Ready to use
All Coatex dispersing agents, thickeners, acrylics or polyurethanes are ready to use
Their liquid form
enables easily pumpable
use in addition no preparation solubilization
is needed resulting in better product flow.
*only for USA (dispersants)