To find the best dispersing agent is often very time consuming, but there are
some important questions to answer before starting, to find the quickest way.
- Is the pigment organic or inorganic?
- If it is inorganic, which charge do the particles have?
(particles used for paint applications are always positively charged,
if not, they are pre-treated to be positively charged)
- Is the color paste going to be used in both water borne and solvent borne
paints?
Concentration
First we have to find the required amount of the dispersing agent for the different pigments.
One way is to produce the paste and measure the viscosity of it, as a function of the added
dispersing agent.
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