FIELD: chemistry.
SUBSTANCE: invention relates to a catalyst composition for ethylene oligomerisation. The composition contains the following: (a) a binuclear complex of chromium (II); (b) a ligand of general formula R1R2P-N(R3)-P(R4)-N(R5)-H, where R1, R2, R3, R4 and R5 are independently selected from C1-C10-alkyl, aryl- and substituted aryl; and (c) an activator or cocatlayst. An ethylene oligomerisation method is also provided.
EFFECT: catalyst composition increases selectivity during oligomerisation of ethylene.
12 cl, 2 tbl, 4 ex
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