Patent ID: 6323294
Filing Date: 2001-11-27
Classification: C07F,C08F,Y10S

Abstract:
A process for the polymerization of olefins comprising contacting one or more C.sub.2-100,000 olefins under polymerization conditions with a catalyst comprising:A.1) a metal complex of formula 1A, and2) an activating cocatalyst, the molar ratio of 1) to 2) being from 1:10,000 to 100:1, orB. the reaction product formed by converting a metal complex of formula 1A to an active catalyst by use of an activating technique, wherein the metal complex of formula 1A corresponds to the formula:CpZMX.sub.x L.sub.l X'.sub.x' (1A);whereCp is a cyclopentaphenanthrenyl ring system ligand optionally substituted with one or more ligand groups selected from hydrocarbyl, silyl, germyl, halide, hydrocarbyloxy, hydrocarbylsiloxy, hydrocarbylsilylamino, di(hydrocarbyl)amino, hydrocarbyleneamino, di(hydrocarbyl)phosphino, hydrocarbylenephosphino, hydrocarbylsulfido, halo-substituted hydrocarbyl, hydrocarbyloxy-substituted hydrocarbyl, silyl-substituted hydrocarbyl, hydrocarbylsiloxy-substituted hydrocarbyl, hydrocarbylsilylamino-substituted hydrocarbyl, di(hydrocarbyl)amino-substituted hydrocarbyl, hydrocarbyleneamino-substituted hydrocarbyl, di(hydrocarbyl)phosphino-substituted hydrocarbyl, hydrocarbylenephosphino-substituted hydrocarbyl, or hydrocarbylsulfido-substituted hydrocarbyl ligand groups, said ligand group having up to 40 atoms not counting hydrogen atoms, and optionally two or more of the foregoing ligand groups may together form a divalent derivative, and further optionally one or more carbons of the cyclopentaphenanthrenyl ring system may be replaced by a nitrogen or phosphorus atom;M is titanium, zirconium or hafnium in the +2, +3 or +4 formal oxidation state;Z is either a cyclic or noncyclic ligand group containing delocalized .pi.-electrons, including a second cyclopentaphenanthrenyl ring system group as herein previously disclosed for Cp, said Z being bonded to M by means of delocalized .pi.-electrons and optionally covalently bonded to Cp through a divalent bridging group, or Z is a divalent moiety lacking in delocalized .pi.-electrons that is covalently bonded to Cp and M, or such a moiety comprising one .sigma.-bond by which it is bonded to Cp, and a neutral two electron pair able to form a coordinate-covalent bond to M, said Z comprising boron, or a member of Group 14 of the Periodic Table of the Elements, and also comprising nitrogen, phosphorus, sulfur or oxygen;X is a monovalent anionic ligand group having up to 60 atoms other than hydrogen;L independently each occurrence is a neutral ligating compound having up to 20 atoms;X' is a divalent anionic ligand group having up to 60 atoms;x is 0, 1, 2, or 3;l is a number from 0 to 2, andx' is 0or 1.