Patent ID: 7612009

Claim:
A metal complex catalyst, which is a reaction product of: A) at least one metal complex represented by Formula 2: wherein: M I is lanthanum, cerium, praseodymium, neodymium, or promethium; N is nitrogen; X, independently each occurrence, is fluoride, chloride, bromide or iodide or an —OR group, wherein R, independently each occurrence, is hydrogen, or a group having 1 to 80 atoms (not counting hydrogen), selected from hydrocarbyl, hydrocarbylsilyl, halo-substituted hydrocarbyl, hydrocarbyloxy-substituted hydrocarbyl, acyl-substituted hydrocarbyl, arylcarbonyl-substituted hydrocarbyl, hydrocarbylamino-substituted hydrocarbyl, hydrocarbylsilyl-substituted hydrocarbyl, acyl or arylcarbonyl; D is THF, 1,2-dimethoxyethane, triethylamine, tetramethylethylenediamine, or Et 2 O or; y is the number 1, 2, 3, 4, 5, or 6; t is the number 0, 1, 2 or 3; R A and R B , independently each occurrence, are each a group having from 1 to 80 atoms (not counting hydrogen), selected from hydrocarbyloxy-substituted hydrocarbyl, hydrocarbylamino-substituted hydrocarbyl, or hydrocarbylsilyl-substituted hydrocarbyl; and wherein the two ligands (R A )(R B )N are only linked via M I ; and B) at least one activator selected from: a) C 1-30 organoboron or organoaluminum compounds, b) polymeric or oligomeric alumoxanes, c) non-polymeric compatible, non-coordinating, ion-forming compounds, and d) hydrocarbyl sodium, hydrocarbyl lithium, hydrocarbyl zinc, hydrocarbyl magnesium halide, and dihydrocarbyl magnesium; and wherein A) and B) are brought together in a reaction medium at a temperature from −78° C. to 250° C.