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Return to Abstracts of Patents Return to Abstracts of Patents 1000-1249 Patent Abstracts1245. ------. [I. G. FARBENINDUSTRIE A. G.] [Halogenating Hydrocarbons.] French Patent 842,219, June 8, 1939. Chem. Abs., vol. 34, 1940, p. 5090. Substances obtained for catalytic hydrogenation of CO, under normal or high pressure, or their dehydration products, or their polymerization products obtained after the hydrogenation, are treated with a halogen and a sulfurous, selenious or tellurious anhydride. |