CATALYST COMPONENTS FOR POLYMERISATION OF OLEFINS Russian patent published in 2017 - IPC C08F4/651 C08F10/00 

FIELD: chemistry.

SUBSTANCE: solid catalyst component contains Mg, Ti, Cl and an electron donor compound of formula

(I),

in which X and Y are selected from R¹, -OR¹ and -NR₂, and B is oxygen or sulfur, S is sulfur, R¹ is selected from the hydrocarbon groups C₁-C_15, optionally containing a heteroatom selected from halogen and O, which can be joined together to form one or more rings, R is hydrogen or R¹, and A is a divalent bridging group with a chain length between two bridging bonds of 1 to 10 atoms, and has the formula - (ZR²_m)_n-, where Z is independently selected from C, the group R², equal to or different from each other, are hydrogen or hydrocarbon radicals C₁-C₂₀, which can be connected to form one or more cycles, m is a number equal to the valence of Z, and n is an integer of 1 to 10. The polymerization catalyst comprises a reaction product between a solid catalyst component and an alkyl aluminium compound; and optionally an external electron-donor compound.

EFFECT: excellent balance of chemical activity and stereospecificity.

14 cl, 1 tbl, 18 e