| 摘要 |
1,240,337. Olefinoxides. FARBENFABRIKEN BAYER A.G. 27 June, 1968 [27 June, 1967], No. 26139/68. Heading C2C. [Also in Division C7] An olefin, such as propylene, ethylene or butene, is converted to its oxide in an electrolytic cell comprising a bipolar electrode (see Division C7). In oxidizing propylene to propylene oxide in an electrolytic cell divided by a diaphragm into anode and cathode zones, the cell is filled with aqueous KCl solution and the propylene together with an inert gas, mainly propane, are introduced into an anode zone. Propylene chlorohydrin is formed and passes through the diaphragm to the cathode zone where it is dehydrohalogenated into propylene oxide. It leaves the cell partly in solution in the electrolyte and partly in gaseous form together with H 2 formed at the cathode. Some 1,2-dichloropropane is also formed. |
