Coloration of Plastics is a key process which is mainly carried out to improve Plastics’ aesthetics and to enhance Plastics’ performance in use.

Pigments are of two types: organic and inorganic. Organic pigments are brighter, purer, and richer in colour than inorganic pigments; however, they are more susceptible to ultraviolet radiation damage, chemical damage, and colour bleeding. Also, organic pigments are translucent and therefore do not add to the hiding ability of the paint. Inorganic pigments are considered hiding or semi hiding pigments and are low priced. However, the colours of inorganic pigments tend to be earthy and muddy.

Inorganic pigment mainly gets used in plastics, paints, synthetic fibers and ink industry. It is useful where bright colours are required, organic pigments are used as they bolster high colour strength. Inorganic pigments include white opaque pigments which are commonly used to lighten other colours and also to provide opacity.