What are true solvents, cosolvents, and diluents?

For volatile drying inks, there are What are the common solvent types and what role do each play?

For volatile drying inks, the solvents used can be divided into the following three categories.

True Solvent

The solvent that can dissolve the polymer resin in this type of ink is the true solvent of the resin.

Co-solvent (latent solvent)

It itself cannot dissolve the polymer resin used, but within a certain limited amount, it can provide a certain degree of solubility when mixed with a true solvent.

Thinner

This kind of solvent cannot dissolve the polymer resin used and has no dissolving effect. However, within a certain limited amount, it can be mixed with the real solvent. It plays a diluting role and is cheaper than the real solvent and co-solvent used. It can cut costs.

Special Reminder

Classification of these solvents It is relative. A certain solvent acts as a true solvent in a certain type of system, but may also be used as a diluent in another system.