Patent ID: 6870015
Filing Date: 2005-03-22
Classification: C08F,Y10S

Abstract:
1. A catalyst component for addition polymerization comprising: (i) a transition metal compound having (a) two cyclopentadiene type anion skeleton-carrying groups, which are linked with each other directly or through a bridging group, and (b) a hafnium atom as its central metal, and (ii) a transition metal compound having (a) two substituted cyclopentadiene type anion skeleton-carrying groups, which are not linked with each other, and (b) a zirconium atom or a titanium atom as its central atom; wherein said cyclopentadine type anion skeleton-carrying group of the transition metal compound (i) is an η said substituted cyclopentadine type anion skeleton-carrying group of the transition meetal compound (ii) is an η