NON-METALOCENE PRECATALYSTS SOLUBLE IN ALKANE Russian patent published in 2023 - IPC C07F7/00 C08F4/642 C08F4/659 C08F210/16 

FIELD: chemical compounds.

SUBSTANCE: compound of formula (1) where M is Zr or Hf, where each R is independently -CH₂SiR¹R²R³, where each R¹, R² and R³ independently represents unsubstituted (C₁-C₁₅)alkyl. Also provided are a method for synthesizing a compound of formula (1), a solution of a compound of formula (1) in an alkane solvent, a catalyst system containing a compound of formula (1) and an activator, and a method for producing a polyolefin polymer using the proposed catalyst system.

EFFECT: compound (1) provides a solution to the problem of instability associated with known non-MCN pre-catalysts that are insoluble in alkanes, since compound (1) can be stored as a solution in alkanes without an activator.

9 cl, 1 dwg, 2 tbl, 12 ex