247.    ---------------. [ BERTHELOT, C.] [Synthetic and Substitute Lubricants.]  Chim. et Ind., vol. 53, 1945, pp. 160-166; Chem. Abs., vol. 42, 1948, p. 6096.

                  To replace imported petroleum products, lubricants can be obtained from anthracene oil, rosin oil, shale oil, low-temperature tar, and coal (by hydrogenation or by Fischer-Tropsch synthesis).  The development of vegetable-oil production in North Africa will provide open-chain material for Friedel-Crafts syntheses on a C₁₀H₈ nucleus, and the chemical or electrical polymerization of C₂H₄ can also yield lubricants.