PATENTS 3189.----- [RUHRCHEMIE, A. G.] [Separating Mixtures of Esters and Paraffins.] German Patent Appl. R 118,283, no date (Cl. IV d-12 o). Auszüge deut. Patent-Anmeldungen, vol. 6, p. 319. Mixtures of sulfuric acid esters of high-molecular hydrocarbons and paraffin hydrocarbons are first neutralized with alkali and then continuously extracted with low-boiling hydrocarbons. Addition to German Patent Appl. R 116,698 (abs. 3096). |