Patent ID: 6800701
Filing Date: 2004-10-05
Classification: C07C,C07F,C08F,Y10S

Abstract:
An olefin polymerization process comprising contacting one or more olefin monomers under polymerization conditions with a catalyst composition comprising an activating cocatalyst and a metal complex corresponding to the formula:CpM(Z)z(X)x(L)l(Xâ€²)x, where Cp is an aromatic, polycyclic, fused ring ligand or inertly substituted derivative thereof comprising at least: (1) a cyclopentadienyl ring, (2) a 6, 7, or 8 membered ring other than a 6-carbon aromatic ring, and (3) an aromatic ring, with the proviso that said 6, 7, or 8 membered ring (2), is fused to both the cyclopentadienyl ring (1), and the aromatic ring (3), said Cp having up to 60 atoms other than hydrogen; M is a metal selected from Groups 3-10 or the Lanthanide series of the Periodic Table of the Elements; Z is either: a) a cyclic ligand group containing delocalized &pgr;-electrons, including a second or third, fused, polycyclic ligand, Cp, said Z being bonded to M by means of delocalized &pgr;-electrons and optionally also covalently bonded to Cp through a divalent bridging group, Zâ€², or b) a divalent moiety of the formula â€”Zâ€²Yâ€”, wherein, Zâ€² is SiR62, CR62, SiR62SiR62, CR62CR62, CR6&boxH;CR6, CR62SiR62, â€”BR6, BR6Lâ€³, or GeR62; Y is â€”Oâ€”, â€”Sâ€”, â€”NR5â€”, â€”PR5â€”; â€”NR52, or â€”PR52; R5, independently each occurrence, is hydrocarbyl, trihydrocarbylsilyl, or trihydrocarbylsilylhydrocarbyl, said R5 having up to 20 atoms other than hydrogen, and optionally two R5 groups or R5 together with Y form a ring system; R6, independently each occurrence, is hydrogen, or a member selected from hydrocarbyl, hydrocarbyloxy, silyl, halogenated alkyl, halogenated aryl, â€”NR52, and combinations thereof, said R6 having up to 20 non-hydrogen atoms, and optionally, two R6 groups form a ring system; Lâ€³ is a monodentate or polydentate Lewis base optionally bonded to R6; X is hydrogen or a monovalent anionic ligand group having up to 60 atoms not counting hydrogen; L independently each occurrence is a neutral ligating compound having up to 20 atoms, other than hydrogen, and optionally L and X are bonded together; Xâ€² is a divalent anionic ligand group having up to 60 atoms other than hydrogen; z is 0, 1 or 2; x is 0, 1, 2, or 3; 1 is a number from 0 to 2, and xâ€² is 0 or 1.