BIS(TETRAHYYDRO-INDENYL) METALLOCENES AS OLEFIN-POLYMERIZATION- CATALYST

摘要

A new class of bridged bis(tetrahydro-indenyl)metallocenes of formula (I),wherein M is Zr or Hf; X are monoanionic sigma ligands; (ZR1i)j is a divalent group bridging the two tetrahydro-indenyl residues; R2 and R3 are halogen, alkyl, cycloalkyl, aryl, alklyaryl or arylalkyl radicals; p is 0-3; i is 1 or 2; j is 1-4; m is 1-2; and n is 0-8. Furthermore, catalysts systems for olefin polymerization containing them are described.