ACTIVATED CATALYTIC COMPONENTS FOR OLEFINS POLYMERIZATION Russian patent published in 2024 - IPC C08F4/00 C08F4/64 C08F4/654 C08F4/655 C08F4/656 C08F4/649 C08F10/00 B01J37/04 

FIELD: polyolefins.

SUBSTANCE: present invention essentially relates to a non-phthalate, highly active activated catalyst component for the production of polyolefins, which provides improved control over reaction kinetics. An activated and non-phthalate solid catalyst component for the polymerization of olefins is described, containing the reaction product of: (a) a halide-containing magnesium compound; (b) titanium compounds containing titanium with oxidation states of at least +3 and +2; (c) an organosilicon compound containing Si-O groups; (d) aluminium alkyl compounds; (e) a co-electron donor comprising a monobenzoate, wherein the co-electron donor is present in the catalyst component in an amount of from 0.01 to 5% by weight; (f) at least one internal electron donor, wherein the at least one internal electron donor is present in the catalyst component in an amount of from 1 to 15% by weight; and a polymer formed from an alpha olefin having the formula CH ₂ = CHR₁ where R₁ represents hydrogen or a C1-C7 alkyl group, and is present in the catalyst component in an amount of from 0.3 to 200 grams of polymer per gram of catalyst component. A method for producing said activated solid catalyst component includes: a) forming a catalyst precursor component; b) reacting the product obtained in step a) with a trialkylaluminum compound in the presence of an organosilicon compound; c) reacting the product obtained in step b) with an olefin and polymerizing the olefin to form a polymer coating on the solid catalyst component particles; d) isolating the activated solid catalyst component. A method for producing olefin polymers involves polymerizing an olefin in the presence of said activated solid catalyst component in a gas-phase polymerization reactor, wherein the activated solid catalyst component is produced outside the polymerization reactor and fed into the reactor.

EFFECT: high catalytic activity without initial accumulation of heat sufficient to destroy the catalyst, increased catalyst service life, stability for several months without changing the catalytic activity, improved catalyst morphology.

31 cl, 53 ex, 17 tbl, 6 dwg