2962. ----- [RUHRCHEMIE, A. G.] [Lubricating Oils.] French Patent 827,761, May 3, 1938; appl. filed Oct. 11, 1937. Chem. Zentralb., 1938, II, p. 2217; Chem. Abs., vol. 32, 1938, p. 8764.

Mixtures of hydrocarbons are condensed with known condensing agents, for example, AlCl₃. The starting material is gasoline, the different fractions of which have following densities to within 1% above or below, the temperature being the mean boiling temperature of that fraction, 50° = 0.6510, 60° = 0.6635, 70° = 0.6755, 80° = 0.6860, 90° = 0.6960, 100° = 0.7055, 110° = 0.7120, 160° = 0.736, 170° = 0.74, 180° 0.743, 190° = 0.7465, 200° = 0.75, 210° = 0.753, and 220° = 0.7555.