PATENTS

3927.            WIETZEL, R., SPEER, W., AND KAEHLER, H.  (I. G. Farbenindustrie A. G.).  Hydrocarbons of High-Boiling-Point Range Suitable for Use As Lubricating Oils.  United States Patent 1,798,288, Mar. 31, 1931; appl. filed Aug. 23, 1928, Serial No. 301,698.  Chem. Abs., vol. 25, 1931, p. 3160.

Mixture of oxides of C and H₂ is subjected to treatment with a catalyst containing, in addition to a metal of group 8 of the periodic system such as Fe and Co, a quantity of an alkali-metal compound, such as Na having, an alkalinity not substantially greater than that of Na₂CO₃ and comprising less than 0.5 part, calculated as alkali metal, per 100 parts of the group 8 metal; the treatment is effected at temperatures of 270°-350°, and the resulting hydrocarbons of low-boiling-point range are subjected to a treatment under  pressure at temperatures <250° in the presence of an inorganic anhydrous halide having a condensing action such as AlCl₃ which, when treated with H₂O, causes strong evolution of heat.