| 摘要 |
1, 141, 638. Fused electrolyte process for producing organic compounds. IMPERIAL CHEMICAL INDUSTRIES Ltd. Jan.12, 1967 [Jan.14, 1966], No. 1937/66. Addition to 1, 078, 154. Heading C7B. The process of the parent invention of producing organic isocyanates, urethanes or ureas is modified in that the electrolytic cell contains a melt comprising ammonium cyanate, the anode contacting (1) a compound capable of producing cyanate ions and (2) an aromatic compound containing at least one H atom on the aromatic ring and/or an olefinic compound. The molten ammonium cyanate may be the compound (1) or provided by melting urea. The compound (1) may be a mixture having an empirical formula A (M(OCH) 4 ) n , in which A is an alkali or alkaline earth metal and n is its valency, and M is Al, B or Fe. The organic compound (2) may be fed through a porous graphite anode which may be impregnated with Pt or Pd; alternatively, the anode may consist of a porous mixture of PTFE and Pt or Pd, or porous Pb or Pd. A stainless steel cathode may be used with specified anode or the electrodes may be of Pt or C. The cell may be U-shaped or divided into two compartments by a porous sintered glass electrolyte barrier to prevent the isocyanates from contacting the cathode. |
