PATENTS

2834. ----- [ROTTIG, W.]  (Ruhrchemie A. G.).  [Process of Extracting Oxygen Compounds From Hydrocarbon Mixture.  United States Patent 2,581,712.  Jan. 8, 1952; appl. filed Aug. 8, 1949, Serial No.  109,226;  in France, Aug. 12, 1948;  2 claims (Cl. 260-450).

            Treatment of mixtures of aliphatic hydrocarbons, such as result from the catalytic hydrogenation of CO. for removing the oxygenated compounds is discussed.  The mixtures are treated in 2 stages:  1^st with polyvalent alcohol such as glycol and then with a mixture of polyvalent alcohol and a low-molecular-weight monovalent alcohol such as MeOH in the proportion of 1:2 parts.  This is followed with a water wash to remove any residual alcohols.  The extracted oxygenated compounds are separated from the solvent by simple distillation.