Pigments are finely crushed organic or synthetic insoluble particles that provide color when they are added to coatings and paint formulations.  Some of the most popular classes of pigments are:

Organic pigments

Inorganic pigments

Functional pigments

Special effects pigments

While organic pigments are unable to disperse as easily and create aggregates (clumps made of tiny particles of color) Inorganic pigments are easier to disperse in resin. Functional fillers give the desired properties to the coating such as corrosion inhibitors, and other special effects pigments can create optical effects, such as metal, hammer finishes, and various color perceptions depending on the angle. Pigment Green 7

Differentialities between Pigments and Dyes

Pigments are organic or inorganic colored white, black, or colored substances that are almost not soluble within the media where they're used. Pigments are distinct and distinctive that giving the medium its color and opacity.

The smallest of units are referred to as primary particles. The shape and structure of these particles are influenced by their crystallinity. In the process of producing pigment,s primary particles typically form agglomerates and then aggregate. When dispersing the pigment in the polymer typically, high shear is needed to break the aggregates (improved the strength of tinting). The pigments must be able to resist the dissolution of solvents they come in contact with during application, or else problems like "bleeding" and migration may occur. Additionally, based on the requirements of the specific application, pigments should be impervious to weathering, light as well as heat, and chemical reactions like alkalis and acids. Pigment Green 7 Manufacturer