PATENTS

2539. OCON, E. A. Manufacture of Branched-Chain Aliphatic Compounds. United States Patent 2,299,844, Oct. 27, 1942; appl. filed Jan. 2, 1940, Serial No. 312,027 (Cl. 44-54). Chem. Abs., vol. 37, 1943, p. 1722.

Method is employed for converting low-boiling, straight-chain, oxygenated derivatives of normal aliphatic hydrocarbons, such as are obtained by synthesis from CO and H2, into higher boiling isoaliphatic compounds of higher antiknock value suitable for motor fuel, which involves bringing a mixture of such oxygenated derivatives, normally gaseous olefins, and a reducing gas composed primarily of CO and containing <25% of H2, the combined CO and olefin content of the gaseous material being at least equal to the volume of oxygenated derivatives, into contact with a dehydrating catalyst, such as a dehydrated Cu-U phosphate, at a temperature in the range of 400-1,100 F. while maintaining the H2O vapor content of the reactants < 8% by volume.