Patent ID: 6234950
Filing Date: 2001-05-22
Classification: C08F,Y10S

Abstract:
A catalyst component for olefin polymerization comprising an organometallic complex defined by the formula: ##STR5##wherein Cp is selected from cyclopentadienyl, substituted cyclopentadienyl, indenyl, substituted indenyl, fluorenyl, and substituted fluorenyl; M is a metal selected from titanium, zirconium and hafnium; X is an activatable ligand and n is selected from 1 and 2; said HPI is a heterosubstituted phosphinimine ligand which is bonded to the metal M, and wherein said HPI is defined by the formula: ##STR6##wherein R.sup.1 is independently selected from the group consisting of a hydrogen atom, a halogen atom, C.sub.1-20 hydrocarbyl radicals which are unsubstituted by or further substituted by a halogen atom, a C.sub.1-8 alkoxy radical, a C.sub.6-10 aryl or aryloxy radical, a silyl radical of the formula:--Si--(R.sup.2).sub.3wherein each R.sup.2 is independently selected from the group consisting of hydrogen, a C.sub.1-8 alkyl or alkoxy radical, C.sub.6-10 aryl or aryloxy radicals, and a germanyl radical of the formula:Ge--(R.sup.2).sub.3wherein R.sup.2 is as defined above; and H.sup.1 is a heterosubstituent having a nitrogen atom bonded to said phosphorus atom, with the provisos that a=0, 1 or 2, b=1, 2 or 3 and a+b=2 or 3.