PATENTS

      1603.  ------.  [I. G. FARBENINDUSTRIE, A. G.]  [Synthetic Products From Industrial Gases.]  French Patent 690,091.  Feb. 17, 1930.  Chem. Zentralb., 1931. I. p. 1,554: Chem. Abs., vol. 25. 1931. 9. 1062.

            In the manufacture of synthetic products such as alcohols, aldehydes, acids, or NH₃ from industrial gases containing CO, excess CO in the gas not required for the synthesis is removed by using it for the preparation of Fe carbonyl.