CATALYST SYSTEM, PRODUCTION METHOD THEREOF AND POLYOLEFINS OBTAINED BASED ON SAID SYSTEM Russian patent published in 2012 - IPC C08F4/76 C08F4/08 C08F4/10 C08F4/14 C08F10/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a catalyst system for producing polyolefins. The catalyst system contains a halide complex of a group 4 metal with a polydentant organic ligand from (4R,5R)-2,2-R¹,R²-α,α,α',α'- tetra(C₆R³R⁴R⁵R⁶R⁷)-1,3-dioxolan-4,5-dimethanol derivatives, where R1 and R2 are groups, identical or different, which are selected from a group comprising substituted or unsubstituted C1-C20 linear or branched alkyl, C3-C20 cycloalkyl, C6-C20 aryl and C10-C20 condensed aromatic groups; R3-7-alkyl (C1-C5), aryl, fluorine, trifluoromethyl; or 2-(2-hydroxy-2,2-diphenylethylamino)-1,1-diphenylethanol and an organoaluminium compound. The system further contains at least one metal halide selected a group comprising lithium, sodium, magnesium, zinc, scandium and aluminium. Molar ratio of the halide complex of the group 4 metal, the metal halide selected a group comprising lithium, sodium, magnesium, zinc, scandium and aluminium and the organoaluminium compound is in the range of 1:0,1-500:10-5000, preferably, 1:1-300:100-1000. The invention also discloses a method of producing the catalyst system and a polyolefin.

EFFECT: invention increases catalytic activity and reduces the amount of expensive cocatalyst - methylalumoxane.

5 cl, 3 dwg, 24 ex