3218. RUTLEDGE, T. F., SEGER, F. M., SACHANEN, A. N., AND GARWOOD, W.E. (Socony-Vacuum Oil Co.). Synthetic Lubricants. united States Patent 2,569,429, Sept. 25, 1951; Appl. filed Sept. 28, 1950, Serial No. 187,368; 19 claims (Cl. 260-450).

PATENTS

3218. RUTLEDGE, T. F., SEGER, F. M., SACHANEN, A. N., AND GARWOOD, W.E. (Socony-Vacuum Oil Co.). Synthetic Lubricants. United States Patent 2,569,429, Sept. 25, 1951; Appl. filed Sept. 28, 1950, Serial No. 187,368; 19 claims (Cl. 260-450).

Complex olefin mixture obtained by a Fischer-Tropsch reaction and boiling substantially within the rang 150°-600° F. is treated with a saturated solution of an alkali metal salt of a monohydroxy aromatic compound such as m-cresol (an aqueous solution of K m-cresylate is preferred). An extract layer and a raffinate layer are formed; the 2 layers are separated, and the raffinate layer is converted into the synthetic lubricant.