CATALYST COMPONENTS AND CATALYSTS FOR OLEFIN POLYMERIZATION OBTAINED FROM THEM Russian patent published in 2021 - IPC C08F4/649 C08F110/02 C08F4/651 C08F4/654 

FIELD: biochemistry.

SUBSTANCE: invention relates to catalyst components for the polymerization of olefins CH₂=CHR, with R representing hydrogen or a hydrocarbon radical with 1-12 carbon atoms, catalysts for the polymerization of olefins and a process for the (co)polymerization of olefins. Catalyst components for olefin polymerization contain Ti, Mg, chlorine and an internal donor selected from esters of aliphatic monocarboxylic acids (EAA) and another internal donor selected from cyclic ethers (CE). The EAA / CE molar ratio is 0.2 to less than 20, the Mg / Ti molar ratio is 10 to 40, and the Ti atoms are present as titanium tetrachloride. The catalyst contains a reaction product of a solid catalyst component and one or more alkyl aluminum compounds.

EFFECT: increased morphological stability of the catalyst and at least acceptable activity and ability to maintain constant polymer properties.

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