Interior Design and Decorating Finishes for the Home
All You Need to Know About Paint
Paint Additives
As we have learnt at the beginning of this topic, most paints and clear finishes have additives included in their makeup. There are various types of additives.
Dryers and Hardeners
Dryers
Dryers are incorporated into paints, which have a drying oil binder; this increases the absorption rate of oxygen, which speeds up the drying time.
Hardener (or catalyst)
Hardeners or Catalysts are added to paints with a particular synthetic resin binder.
They create a chemical change that alters the synthetic resin to a hard film.
It is a component of two pack coating which, when combined in the correct proportion activates the chemical reaction required to change the coating to a dry film.
Flatting Agents
This additive reduces the gloss of the dried film of paint.
Anti Skinning Agents
This additive is used to prevent the forming of a skin on top of the oil-based paint, which sometimes occurs whilst it is in the tin.
Thixotropic Agents
This additive gives the paint a smooth gel like quality, which means that it doesn't "drip" as much as other paints and it doesn't require stirring in the tin.
Plasticiser/Stabiliser
Plasticiser provides flexibility in the coating, stabiliser prevents component separation.
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