NOVEL CATALYTIC COMPOSITION BASED ON NICKEL AND LIGAND OF PHOSPHINE TYPE AND LEWIS BASE AND USE THEREOF IN OLEFIN OLIGOMERIZATION METHOD

摘要

FIELD: chemical engineering.;SUBSTANCE: invention relates to a catalytic composition containing at least one nickel precursor with oxidation degree (+II), and at least one phosphine ligand of formula PR¹R²R³, in which the groups PR¹R²R³ are identical or distinct and are not necessarily related to each other, the activating agent selected from the group that produces chlorine- and bromocarbon saturated aluminium hydrocarbon compounds, used separately or in a mixture, and at least one Lewis base, wherein the molar ratio of the phosphine ligand to the nickel precursor is less than or equal to 5, the molar ratio of the combination of the Lewis base and the phosphine ligand to the nickel precursor is 5 to 30, the molar ratio of the activating agent to the nickel precursor is greater than or equal to 6 and less than or equal to 30.;EFFECT: achieved is effective production of above-mentioned catalytic composition.;11 cl, 7 ex