FIELD: chemistry.
SUBSTANCE: disclosed is a catalyst system for highly selective trimerisation of ethylene into 1-hexene, which consists of a chromium (III) complex with a branched structure, having one or more substitutes in a hydrocarbon SNS skeleton, and an activator which is a mixture of trimethylaluminium and methylaluminoxane, wherein the molar ratio of the components of the catalyst system [Cr]:TMA:MAO is equal to 0.4%:49.8%:49.8%.
EFFECT: catalyst provides high selectivity of the process of trimerising ethylene into 1-hexene while minimising formation of a polymer by-product.
2 cl, 1 tbl, 4 ex
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