1050. ------ [HIBSHMAN, H. J.]. (Standard Oil Development Co.). Recovery of Organic Oxygen-Containing Compounds From Mixtures of Hydrocarbon Oils. United States Patent 2,626,276, Jan. 20, 1953; appl. filed Dec. 13, 1947, Serial No. 791,592; 4 claims (

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Patent Abstracts

1050. ------ [HIBSHMAN, H. J.]. (Standard Oil Development Co.). Recovery of Organic Oxygen-Containing Compounds From Mixtures of Hydrocarbon Oils. United States Patent 2,626,276, Jan. 20, 1953; appl. filed Dec. 13, 1947, Serial No. 791,592; 4 claims (Cl. 260-450). Chem. Abs., vol. 47, 1953, p. 4075.

The mixture of O₂-containing compounds and hydrocarbon oils is extracted with S dioxide in conjunction with a wash solvent insoluble in S dioxide, preferably in a liquid-liquid extraction whereby the O₂-containing compounds dissolve in the S dioxide forming the extract phase, leaving the raffinate phase composed substantially of the hydrocarbons and the wash solvent. 1 literature ref., 3 foreign patents, and 5 U. S. patents cited.