METAL CHELATE AND METHOD OF OLEFIN POLYMERIZATION Russian patent published in 2003 - IPC

FIELD: organic chemistry, polymers, chemical technology. SUBSTANCE: invention describes metal chelate corresponding to formulas (I) and (II) where M means Ti, Zr or Hf; R^A means hydrogen atom or lower alkyl; R^B means in each case independently methyl or phenyl; or, optionally, both groups R^B in common with N-atom form 5-6-membered heterocyclic ring; R^X and R^Y mean independently hydrogen atom, or R^X and R^Y are bound covalently each with other to form condensed ring optionally substituted with lower alkyl groups; R* means lower alkyl or cycloalkyl; X means in each case independently lower alkyl, lower cycloalkyldienyl or benzyl possibly substituted with di-(lower)-alkylamino-group; X' means coupled diene with possible terminal substitution with phenyl radicals. Invention relates also to method of polymerization of olefins in the presence of catalytic system comprising the above indicated metal chelate. EFFECT: improved method of polymerization, valuable properties of chelate. 9 cl, 3 dwg, 5 tbl