| abstract |
A catalyst component useful for the polymerization of olefins, which is a transition metallic compound having the following formula [I]:n whereinn M: a transition metal selected from Ti, Zr and Hf; R 1 : a monovalent C 1-6 hydrocarbyl group, or a monovalent C 1-6 hydrocarbyl group containing Si; R 2 : a divalent C 4-20 hydrocarbyl group, or a divalent C 4-20 hydrocarbyl group containing Si; R 3 : a divalent C 1-30 hydrocarbyl group, or a divalent C 1-30 hydrocarbyl group containing Si or Ge; and X and Y: H, halogen, a monovalent C 1-20 hydrocarbyl group, or a monovalent C 1-20 hydrocarbyl group containing N, 0 or Si. |