METHOD OF PRODUCING A LIGAND OF 1-PHENYLETHANE-1,2-DIOL OF A PRE-CATALYST OF EPDM/EPM RUBBERS Russian patent published in 2021 - IPC C08F4/42 C08F210/16 C07C29/10 B01J37/04 B01J37/06 

FIELD: hydrocarbon process industry.

SUBSTANCE: invention relates to a method for producing a ligand of 1-phenylethane-1,2-diol precatalyst for producing ethylene-propylene EPDM rubbers, which is characterized in that styrene oxide, toluene and deionized water are mixed, the reaction mixture is stirred while heating to a temperature of 50-110 °C for 6-12 hours, followed by distillation of half of the volume of the reaction mixture, the resulting precipitate is cooled, filtered, washed twice with hexane and dried at room temperature at a pressure of 5 mbar for an hour.

EFFECT: technical result consists in simplifying the method for producing the ligand of 1-phenylethane-1,2-diol and increasing its yield.

1 cl, 2 tbl, 8 ex