CATALYST COMPOSITION FOR OLIGOMERISATION OF ETHYLENE, OLIGOMERISATION METHOD AND METHOD OF PRODUCING CATALYST COMPOSITION

摘要

FIELD: technological processes.;SUBSTANCE: disclosed is a catalyst composition for oligomerisation of ethylene containing (i) an at least partially hydrolysed transition metal compound which can be obtained by controlled addition of water to a transition metal compound of the general formula MX_m(OR')_4-m or MX_m(OOCR')_4-m, where R' is an alkyl, alkenyl, aryl, aralkyl or cycloalkyl group, X is a halogen, preferably Cl or Br, and m denotes a number from 0 to 4, preferably 0-3; and (ii) an organoaluminium compound as a cocatalyst. The molar ratio of water to the transition metal compound is the range of (0.01-3):1. The invention also discloses a method for oligomerisation of ethylene and a method of producing the catalyst composition.;EFFECT: catalyst composition increases the degree of purity of obtained alpha-olefins and minimises formation of wax/polymer in the reactor.;12 cl, 2 tbl, 7 ex