Return to Abstracts of Patents Return to Abstracts of Patents 750-999 Patent Abstracts803. ------. [GIESEN, J., HANISCH, H., AND DALLY, M.] (I. G. Farbenindustrie A. G.). Purifying Methanol. United States Patent 2,115,553, Apr. 26, 1938. Chem. Abs., vol. 32, 1938. p. 4610. Crude product obtained by catalytic hydrogenation of C oxides under pressure is mixed with H2O and centrifuged to separate the mixture into an upper oily layer containing the separable impurities and a lower MeOH-H2O layer. |