CATALYST COMPONENTS FOR OLEFIN POLYMERIZATION Russian patent published in 2020 - IPC B01J37/04 B01J35/00 C08F4/646 C08F10/00 C08F4/02 

FIELD: chemistry.

SUBSTANCE: invention relates to polymerization catalysts and use thereof. Described is a catalyst mixture for (co)polymerization of olefins CH₂=CHR, where R is hydrogen or a hydrocarbon radical with 1–12 carbon atoms, comprising: a mechanical mixture of (a) particles of a solid catalyst component containing titanium (Ti), wherein the titanium atoms are titanium compounds of formula Ti(OR²)_nX_4-n, where n is from 0 to 4; X is halogen, and R² is a hydrocarbon radical containing 1–10 carbon atoms, MgCl₂ , which is a compound Mg formed by a precursor, and chlorine (Cl); and (b) from 0.2 to 5.0 wt% with respect to the total weight of the catalytic mixture (a)+(b) particles of the solid compound having particles with size of 0.1 mcm to 1 mm and containing more than 50 wt% units of SiO₂ selected from silicon dioxide, silicates, diatomite; where particle size of solid catalyst component (a) ranges from 4 to 120 mcm; wherein solid catalyst component (a) has a sphericity factor higher than 0.60. Described is a catalyst system for (co)polymerization of olefins CH₂=CHR, where R is hydrogen or a hydrocarbon radical with 1–12 carbon atoms, including a product obtained by reacting the described catalytic mixture and an alkyl aluminum compound and use thereof.

EFFECT: increased flowability of the catalyst.

13 cl, 1 tbl, 25 ex