814. GILLILAND, E. R., MORRELL, C. E., CARLSON, C. S., AND ROBERTSON, N. C. (Standard Oil Development Co.). [Extractive Distillation of Alcohols from Closely Boiling Aqueous Mixtures.] United States Patent 2,551,593, May 8, 1951; appl. filed Jan. 28, 1

Patent Abstracts

814. GILLILAND, E. R., MORRELL, C. E., CARLSON, C. S., AND ROBERTSON, N. C. (Standard Oil Development Co.). [Extractive Distillation of Alcohols from Closely Boiling Aqueous Mixtures.] United States Patent 2,551,593, May 8, 1951; appl. filed Jan. 28, 1947, Serial No. 724,840; 13 claims (Cl. 202-39.5). Chem. Abs., vol. 46, 1952, p. 521.

Controlled use of H₂O as a reflux medium is the method by which closely boiling oxygenated organic compounds, particularly H₂O-miscible alcohols, are separated. Flowsheets of the apparatus are given, along with tables listing boiling points of various oxygenated compounds and their azeotropes.

GIRDLER CORP. See abs. 2754.