释义 |
coal-tar pitch
coal-tar pitch n (Elements & Compounds) a residue left by the distillation of coal tar: a mixture of hydrocarbons and finely divided carbon used as a binder for fuel briquettes, road surfaces, and carbon electrodes coal-tar pitch
coal-tar pitch[′kōl ¦tär ‚pich] (materials) Dark-brown to black amorphous residue from the redistillation of coal tar; melts at 150°F (66°C); used as a thermoplastic. coal-tar pitch, tarA dark brown to black hydrocarbon obtained by the distillation of coke-oven tar; softening point near 150°F (65°C); used in built-up roofing as a waterproofing agent.MedicalSeetar |