PATENT

3746.  THIEME, C.  [Producing Fatty Acids by Ozonizing Mixtures of Olefin-Containing Hydrocarbons.]  German Patent 744,080, Jan. 11, 1944; appl. T 50,522, filed June 12, 1938; (Cl. 12 o-11).  FIAT Reel E 29, frames 618-619; PB 70,432.

Olefinic products obtained by the hydrogenation of coal or CO are ozonized in the cold, the resulting oxonides cracked preferably under oxidation and in presence of alkalies, and the fatty acids thus formed separated from the soaps.  Example:  100 gm. of a Fischer-Tropsch diesel oil of specific gravity 0.769, I No. 12.69, viscosity 1.20 at 20°, flame point 89°, and solidifying point –3.5° was ozonized to saturation at room temperature.  The oil was saponified with Na OH with simultaneous passage of air therethrough until the aldehydes formed were oxidized to acids.  The saponifiable oils were oxidized to acids.  The saponifiable oils were then separated by shaking with petroleum ether, the soaps extracted from the residue with 50% alcohol and decomposed with H₂SO₄.  There were obtained  6.39 gm. of H₂O insoluble, clear yellow, liquid fatty acid besides 1.13 gm. of H₂O soluble fatty acid.  The H₂O insoluble fatty acid was completely soluble in petroleum ether, therefore, free from oxyacids.   The amount of unsaponifiable, unozonized oils was 90 gm.