• Cobalt is an extremely active and the most widely used drier in paints, coatings and inks, with a chemical formula C8H15CoO2.
• It is primarily an oxidation catalyst and acts as a surface drier. It is being the most effective drier promotes polymerization of media, hardens the paint film, improves gloss and water resistance and reduces brittleness of film.
• Cobalt is an effective accelerator for unsaturated polyester resin.
• It is also used as a catalyst for chemical reactions, as a rubber adhesion promoter, and a polyurethane catalyst.