Montan Wax :
Montan Wax is derived by solvent extraction of lignite. The composition of montan wax varies geographically with production, but includes varying amounts of wax, resin and asphalt. Montan wax is also known as lignite wax or OP wax. The largest traditional use of Montan wax is in the formulations of carbon paper inks. Montan wax is hard and brittle and has a high melt point; its properties are similar to those of natural plant waxes such as carnauba, which it can replace.