MONOMETALLOCENE CATALYST COMPRISING SCHIFF'S REAGENT BIS-LIGAND FOR POLYMERIZATION OF OLEFINS, METHOD FOR ITS PREPARING AND ITS USING Russian patent published in 2008 - IPC C08F4/6592 C08F10/02 

FIELD: organic chemistry, chemical technology, catalysts.

SUBSTANCE: invention proposes a catalyst of the following structural formula (I): wherein R₁ is chosen from methyl, n-butyl, isobutyl and tert.-butyl; R₂ and R₂' are chosen from hydrogen atom, propyl and isopropyl, respectively; R₃ is chosen from hydrogen atom and methyl; M represents Ti. The proposed catalyst is used for polymerization reaction of ethylene or co-polymerization reaction of ethylene with hexane of high molecular mass and the high rate of removal of co-monomer. Also, invention claims a method for synthesis of indicated catalyst that involves the following steps: (1) interaction of Schiff's reagent ligand of the formula (II) given in the invention description with alkaline metal alkyl derivative in organic medium for preparing alkaline metals salt ligand of Schiff's reagent; (2) interaction of alkaline metal salt of Schiff's reagent ligand with metal cyclopentadienyl chloride of the formula: CpMCl₃ in organic medium, removal of solvent, washing out a residue with organic solvent, filtration of a prepared compound and re-crystallization of filtrate.

EFFECT: improved method of synthesis and preparing.

7 cl, 2 tbl, 23 ex