COBALT-CONTAINING CATALYST COMPONENT FOR ETHYLENE POLYMERISATION INTO LOW MOLECULAR WEIGHT LINEAR POLYETHYLENE CONTAINING TERMINAL VINYL GROUPS, CATALYST AND ITS PREPARATION METHOD Russian patent published in 2023 - IPC B01J23/75 B01J27/10 B01J31/14 B01J31/18 B01J31/22 B01J37/04 C07F15/06 C08F4/42 

FIELD: chemistry.

SUBSTANCE: invention relates to an ethylene polymerization catalyst component, a catalyst for ethylene polymerization using the component, a catalyst preparation method. The ethylene polymerization catalyst component, namely, {2-[1-(2-R¹-6-R²-4-diphenylmethylphenylimino)ethyl]-8-(2-R¹-6-R²-4 diphenylmethylphenylimino)-5,6,7,8-tetra-hydroquinoline}cobalt(II) dichloride has the structure shown in general formula 1. The substituent R¹ is selected from the group consisting of alkyl C₁...C₄₀, where alkyl is a single valence substituent with the following formula: C_nH_2n+1 (1 ≤ n ≤ 40); cycloalkyl C₃...C₁₂, where cycloalkyl is a single valence substituent with the following formula: C_nH_2n-1 (3 ≤ n ≤ 12), cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, cyclonononyl, cyclodeucyl, cycloundecyl and cyclododecyl; halogen atom where halogen is a fluorine, chlorine and bromine. The substituent R² is selected from the group consisting of alkyl C₁...C₄₀, where alkyl is a monovalent substituent with the following formula: C_nH_2n+1 (1 ≤ n ≤ 40), - and an alkylaromatic substituent with the following formula: CH_3-x(Ar)_x (1 ≤ x ≤ 3), where Ar is a monovalent benzene radical with the following formula: C₆H₅ (n, x are integers).

EFFECT: invention obtains a catalyst component that was not described previously and ethylene polymerization catalyst containing the component, which temperature maximum efficiency is within the range of 50...60°C and use it for obtaining linear polyethylene containing terminal vinyl groups with MW of 0.9...92 kg/mol, MWD of 1.7...19.8 and melting point of 119...135°C.

9 cl, 2 dwg, 1 tbl, 49 ex