Patent ID: 6649558
Filing Date: 2003-11-18
Classification: C07F,C08F,Y10S

Abstract:
A catalyst component for olefin polymerization which is an unbridged bis-phosphinimine complex defined by the formula:(Pl)2â€”Mâ€”Ln wherein M is a metal selected from group 2-14 10 metals; each Pl is independently a phosphinimine ligand defined by the formula: wherein each R1 independently selected from the group consisting of (a) a hydrogen atom, (b) a halogen atom, (c) C1-20 hydrocarbyl radicals which are (i) unsubstituted or (ii) further substituted by a halogen atom, (d) a C1-8 alkoxy radical, (e) a C6-10 aryl or aryloxy radical, (f) an amido radical, (g) a silyl radical of the formula: â€”Siâ€”(R2)3 wherein each R2 independently selected from the group consisting of hydrogen, a C1-8 alkyl or alkoxy radical, C6-10 aryl and C6-10 aryloxy radicals, and (h) a germanyl radical of the formula: Geâ€”(R2)3 wherein R2 is as defined above; L is an activatable ligand; n is 1, 2 or 3 depending upon the valence of M with the proviso that L is not a cyclopentadienyl, indenyl or fluorenyl ligand; and B an activator.