VERFAHREN ZUR HERSTELLUNG VON LEICHTEN ALPHA-OLEFINEN MIT VERBESSERTER REINHEIT DURCH OLIGOMERISIERUNG VON ETHEN

摘要

PCT No. PCT/FR95/00044 Sec. 371 Date Nov. 16, 1995 Sec. 102(e) Date Nov. 16, 1995 PCT Filed Jan. 13, 1995 PCT Pub. No. WO95/19332 PCT Pub. Date Jul. 20, 1995For obtaining of improved purity of light alpha olefines produced by oligomerization of ethylene, the ethylene is placed in contact with a catalyst obtained by mixture of a zirconium compound with an organic compound selected from the class of acetals and ketals and with a chlorinated or brominated aluminium hydrocarbyl compound, and that the raw oligomerization effluent is firstly treated with an amine, then subjected to vaporization so as to collect the alpha olefines in the vaporized fraction.