| 摘要 |
1482161 Oligomerizing ethylene SHELL INTERNATIONAL RESEARCH MAATSCHAPPIJ BV 23 Sept 1974 [24 Sept 1973] 41307/74 Addition to 1353873 Heading C5E Linear α-olefins are produced by oligomerizing ethylene in the liquid phase using a reaction solvent selected from C 4 -C 7 α,#-alkane diols and C 3 -C 7 alkylene carbonates in the presence of a catalyst composition produced by contacting in the presence of ethylene and a polar organic solvent (a) a divalent nickel salt, (b) a boron hydride and (c) dicyclohexylphosphinopropionic acid or an alkali metal salt thereof. Suitable reaction solvents are 1,4-butane diol, 1,5-pentane diol, ethylene carbonate and 1,2- propylene carbonate. The oligomerization may be carried out at 80-150‹ C. and 35-176 atmospheres gauge. |
