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PATENTS 2939.----- [RUHRCHEMIE, A. G.] Improving Liquid Hydrocarbons. British Patent 464,393, Apr. 12, 1937. Chem. Abs., vol. 31, 1937, p. 7243. Hydrocarbons, for example, lubricating oils, benzines, gas oils, lignite-tar oils, hydrogenation oils, and oils synthesized from CO and H2 are improved by adding polymerization products obtained by treating mixtures of propylene and ethylene, or gases containing such mixtures, with polymerizing agents, for example, BF3, ZnCl2, FeCl3, AlCl3, at < O°. Reaction accelerators, for example, HgCl2, or retardants, for example, H2O, Al2O3, ZnO, may be present. In examples, (1) 30, 50, or 80% of polymer is added to a refrigerator oil and (2) 100 lb. of mixed C3H6, C2H4, C2H6, C3H8 and CH4, obtained from coke-oven gas by adsorption and cooling, are fed during 5 hr. into 20 lb. of a paraffin oil containing 10 lb. of twice-used AlCl3, a temperature of --30° and pressure of 9.5 atm. being maintained; after 10 hr. the temperature is allowed to rise to atm., the pressure is relieved, and the hydrocarbons are dissolved in petroleum ether, purified by 30% H2SO4 and 30% NaOH and freed from solvent. |