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Return to Abstracts of Patents Return to Abstracts of Patents 1250-1499 Patent Abstracts1333. ------. [I. G. FARBENINDUSTRIE A. G.] [Lubricating Oils.] French Patent 825,839, Mar. 15, 1938. Chem. Abs., vol. 32, 1938. p. 6854. Hydrocarbons are treated with silent electrical discharges, particularly high frequency discharges, the hydrocarbons of a paraffin nature, b. 170°-250°, such as can be extracted from mineral oils of a paraffin basis or pressure hydrogenation products or products obtained by treating oxides of C with H2. |