METHOD OF PRODUCING CATALYST COMPONENTS FOR OLEFIN POLYMERIZATION Russian patent published in 2020 - IPC C08F4/654 C08F110/06 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing a solid catalyst component for (co)polymerization of CH₂=CHR olefins, in which R denotes hydrogen or a hydrocarbon radical with 1-12 carbon atoms, including a compound Ti and, optionally, an electron donor compound on carrier based on Mg chloride. Method includes one or more steps (a), carried out at temperature ranging from 0 to 150°C, in which the Mg-based compound of formula (MgCl_mX_2-m)·nC₂H₅OH, where m ranges from 0 to 2, n ranges from 0 to 6, and where X denotes halogen, reacts with a liquid medium containing a Ti compound having at least a Ti-Cl bond in an amount such that the Ti/Mg molar ratio is greater than 3 and at least one step (b) in which solid particles coming from step (a), are suspended in a liquid medium containing hydrocarbon at temperature of 10 to 100°C. Method is characterized by that at least one of said steps (a) and / or (b) is carried out in presence of 0.5 to 5 wt%, relative to total weight of Mg, particles of solid compound containing more than 50 wt% of SiO₂ units and having average particle size of 1-30 mcm.

EFFECT: disclosed method reduces the time required to deposit catalyst particles in the suspension while maintaining the same catalyst efficiency.

13 cl, 6 tbl, 32 ex