Now let’s look at the definition of “dispersion”.
A similar word is “dissolution.”
“Dissolution” is to dissolve in a liquid into a molecular state.
“Dispersion” is to break up in a liquid into a particle state.
By the way, in colorants,
Molecules are dyes and particles are pigments.
“Dyes” ⇒ “dissolved” molecular states
“Pigment” ⇒ “dispersed” particle state
The particle size of pigment particles in general paints and printing inks is
about several tens of nm ~ several μm.
Dispersion is the crushing of the aggregation of secondary particles.
Ideally, each primary particle should be isolated.
It is very important and very difficult technology.
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