The Universal Selection Source: Coatings Ingredients

Selection Guide

Techno Brief: Pigment Technologies

Pigments are added to paints and coatings formulations to impart color, bulk or a desired physical and chemical property to the wet or dry film. In this selection guide you will find out more about pigments, their types, properties, applications in the coatings industry and much more.

Light Fastness

Light fastness is evaluated in relation to the whole pigmented system, not just the pigment. The binder imparts a varying degree of protection to the pigment, so the same pigment will tend to have better light fastness in a polymer than it will in paint. Pigments will nearly always have a much poorer light fastness in a printing ink system, where there is less resin to protect the pigment, and where there is a double effect of light passing through the pigmented layer, being reflected by the substrate and back through the pigmented layer.

Other pigments that may influence light fastness in a pigmented system are mentioned below:

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