OBTAINING POLYOLEFIN PRODUCTS Russian patent published in 2019 - IPC C08F4/6592 C07F17/00 

FIELD: chemistry.

SUBSTANCE: disclosed is a method of methylating a catalyst composition with substantially normalizing the enantiomeric distribution. Method of producing the catalyst composition involves: suspending metallometric compound in dimethoxyethane (DME); addition of RMgBr solution in DME, where R is a methyl group or a benzyl group, and where RMgBr is more than 2.3 equivalents relative to the metallocene compound; stirring for at least four hours to obtain alkylated metallocene compound; and recovering an alkylated metallocene compound, wherein the alkylated compound has a meso/rac ratio of enantiomers from 0.9 to 1.2.

EFFECT: said conditions provide an alkylation procedure which results in substantially uniform composition from the stereochemical viewpoint.

5 cl, 4 dwg, 12 tbl