2991. ----- [RUHRCHEMIE, A. G.] [Oxo Compounds.] German Patent Appl. --, no date. FIAT Reel K-20, frames 225-228, Sept. 16, 1938; PB 70,211.

Draft of a patent specification. Valuable Oxo compounds can be obtained by conducting olefinic hydrocarbons over a catalyst under pressures up to 50 atm. and at temperature up to 100° in the presence of CO or gases containing it.