VANADIUM CATALYST SYSTEM FOR COPOLYMERISATION OF ETHYLENE, PROPYLENE AND DIENE (VERSIONS) AND METHOD OF PRODUCING ETHYLENE, PROPYLENE AND DIENE COPOLYMERS Russian patent published in 2012 - IPC C08F210/16 C08F210/18 C08F4/20 C08F4/14 B01J27/198 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing ethylene, propylene and diene copolymers, also known as SKEPT rubber, having high molecular weight and a narrow molecular-weight distribution. The catalyst used is a vanadium compound of formula: Z₁, Z₂ is a heteroatom which can be selected from O, S, N; B is a heteroatom which can be selected from O, S; X is a halogen which can be selected F, Cl, Br, I, preferably CI, Br; A is a carbon-containing fragment which can be selected from C₁-C₁₀ aliphatic series, preferably or C₆-C₂₄ aromatic series, preferably , or a C₁-C₁₀ heteroaromatic compound with one or three N atoms; A₁ is a carbon-containing fragment which can be selected from the C₁-C₁₀ aliphatic series, preferably CH₃, C₂H₅, C₃H₇, C₄H₉, or a C₆-C₂₄ aliphatic series, preferably C₆-C₁₂; A₂ is a carbon-containing fragment which can be selected from a C₁-C₁₀ aliphatic series, preferably CH_3; C₂H₅, C₃H₇, C₄H₉, or a C₆-C₂₄ aromatic series, preferably C₆-C₁₂; k=0 or 1; m=3 or 4; n=1 or 2. The invention also describes other versions of a vanadium catalyst system and a method of producing an ethylene, propylene and diene copolymer.

EFFECT: high output of copolymer on 1 g of metal.

22 cl, 1 tbl, 23 ex