Sub-Product

VDR or Petroleum Tar is a black viscous substance obtained after distilling the Fuel and Oil fractions from petroleum. The yield of Tar from various Petroleum is 15–30 wt-%. The main components of Tar are Oil not distilled during the Fractionnation of Petroleum: Petroleum Resins, Solid Asphaltic Substances, and substances of an Acidic Nature. Tar has a Density of 0.95–1.0g/cm³ and a Conventional Viscosity of 18°-45°at 100° C. Tar is also the name for concentrated residues of Petroleum Oil that undergo multistage refining processes to obtain high-quality Motor Oils.