PATENT

3609. ----- [STEINKOHLEN-BERGWERK “RHEINPREUSSEN”].  [Recovering Olefins From Synthetic Mixtures.].  German Patent Appl. St 63,077, no date (Cl. IV d-23 b).  Auszüge deut. Patent-Anmeldungen, vol. 6, p. 784.

Olefinic hydrocarbons are obtained from the mixtures of hydrocarbons occurring in the hydrogenation of CO by treating them with liquid SO2 and removing the olefins, which settle out in the lower SO2 layer.