Binder

Plural: binders

Binder definition

A binder is a substance that holds pigment particles together and allows them to adhere to a surface. It is the component of paint that forms a continuous film as it dries, giving the paint its structure, durability, and finish.

Examples

Oil paint uses linseed oil as a binder to hold pigments and create a flexible, slow-drying film.

Acrylic paint uses an acrylic polymer binder that dries quickly and forms a plastic-like layer.

In watercolor, gum arabic acts as the binder, allowing pigments to dissolve and re-activate with water.

Context

In painting, pigments alone are just colored powders. Without a binder, they cannot stick to a surface or remain stable over time. The binder determines many key properties of the paint, such as drying time, gloss or matte finish, transparency, and flexibility. Understanding the binder helps artists predict how a paint will behave, age, and interact with other materials.

Core Principles

Derivation

From Old English bindan, meaning “to tie or fasten.” The term reflects the binder’s role in physically connecting pigment particles and anchoring them to a surface.

The Lexicon by Alex Righetto