ETHYLENE OLIGOMERIZATION IN THE PRESENCE OF COMPLEX CATALYTIC SYSTEMS ON THE BASIS OF STERICALLY HINDERED BI- AND BIS-PHENOLATE COMPOUNDS OF ZIRCONIUM

Ethylene oligomerization reaction in the presence of complex catalytic systems consisting of sterically hindered bi- and bis-phenol compounds of zirconium, containing various cycloalkyl and tert-butyl substituents in aromatic ring, and alkylaluminium chloride, has been investigated. Their high efficiency in ethylene oligomerization reaction identified. It has been found that in the presence of catalytic system consisting of tichloro{2,2’-methylene[6-(1-methylcyclohexyl]4-methylphenolate} of zirconium and (C₂H₅ )₂AlCl in optimal conditions, a yield of narrow fraction cut of linear α-olefines
C₆-C₁₀ reaches up to 80% mass per converted ethylene, and selectivity on 1-octene in this case exceeds the parameters of known catalytic systems and to make up 50% converted ethylene.