936. HARLAN, J. T. (Shell Development Co.). Production of Oxygenated Compounds. United States Patent 2,504,682, Apr. 18, 1950; appl. filed Nov. 8, 1946, Serial No. 708,625; 5 claims (Cl. 260-632). Chem. Abs., vol. 44, 1950, p. 6876.

Patent Abstracts

936. HARLAN, J. T. (Shell Development Co.). Production of Oxygenated Compounds. United States Patent 2,504,682, Apr. 18, 1950; appl. filed Nov. 8, 1946, Serial No. 708,625; 5 claims (Cl. 260-632). Chem. Abs., vol. 44, 1950, p. 6876.

Oxo synthesis is carried out in at least 2 stages. Fresh synthesis gas containing a major molecular amount of CO and a minor molecular amount of H₂ is supplied to the 1^st stage along with the reactant containing the ethylenic linkage, and the unreacted synthesis gas is continuously recycled in this stage. H₂, substantially free of CO, is supplied to the last stage and unreacted hydrogenating gas is recycled to this stage. Enough recycle gas from the last stage is continuously transferred to the gas stream and recycled to the 1^st stage to maintain the ratio CO : H₂=1 : 1 or above. Any gas vented is from the recycle gas in the 1^st stage. 5 United States patents cited.

See abs. 2048.

HARSHAW CHEMICAL CO. See abs. 2695.

HART, M. See abs. 3798, 3800, 3833.