MODERN CATALYTIC SYSTEMS WITH TRANSITION METAL BASED ON COMONOMER INCORPORATION AND METHODS FOR PREPARING ETHYLENE HOMOPOLYMERS OR COPOLYMERS OF ETHYLENE AND OLEFINS USING THEM Russian patent published in 2016 - IPC C08F4/6592 C08F4/656 C08F210/16 C08F110/02 

FIELD: chemistry.

SUBSTANCE: invention relates to catalytic methods for obtaining copolymers of ethylene and α-olefins. Claimed is method for obtaining copolymer of ethylene and α-olefin with application of catalytic composition, including titanium compound, which is derivative of cyclopentadienyl of formula I,

where M stands for titanium; R¹ and R² independently represent (C₁-C₇)alkyl group; D stands for -N(R⁵)-, where R⁵ stands for (C₁-C₂₀)alkyl group; R³ and R⁴ independently stand for (C₁-C₂₀)alkyl group; X independently stands for halogen atom or (C₁-C₂₀)alkyl group; and n equals 2.

EFFECT: claimed method makes it possible to obtain highly molecular copolymer, which has weight average molecular weight 80000~500000 and distribution of molecular weight (Mw/Mn) 1,5~4,1 with ethylene content 50 wt % or more on industrial scale, with copolymer density constituting 0,860~0,940 g/cm³.

4 cl, 6 ex