Patent ID: 7985816

Claim:
A process for polymerizing one or more olefins, comprising contacting under polymerization conditions one or more olefin monomers with a catalyst system comprising a transition metal compound and an activator having the following formula (2): [R n AH] + [Y] − , (2) wherein [Y] − is a non-coordinating anion, A is nitrogen, phosphorus or oxygen, n is 3 if A is nitrogen or phosphorus, and n is 2 if A is oxygen, and the groups R are identical or different and are a C 1 to C 3 alkyl group, wherein at a given reaction temperature the weight average molecular weight (Mw) of the polymer formed increases or at least does not substantially decrease with increasing monomer conversion, wherein the transition metal compound is represented by the formula: wherein M is zirconium or hafnium; n is 0 or 1; T is selected from dialkylsilyl, diarylsilyl, dialkylmethyl, ethylenyl (—CH 2 —CH 2 —) or hydrocarbylethylenyl wherein one, two, three or four of the hydrogen atoms in ethylenyl are substituted by hydrocarbyl, where hydrocarbyl can be independently C 1 to C 16 alkyl or phenyl, tolyl, xylyl and the like, and when T is present, the catalyst represented can be in a racemic or a meso form; L 1 and L 2 are the same or different indenyl rings, that are each bonded to M; X 1 and X 2 are, independently, hydrogen, halogen, hydride radicals, hydrocarbyl radicals, substituted hydrocarbyl radicals, halocarbyl radicals, substituted halocarbyl radicals, silylcarbyl radicals, substituted silylcarbyl radicals, germylcarbyl radicals, or substituted germylcarbyl radicals; or both X are joined and bound to the metal atom to form a metallacycle ring containing from about 3 to about 20 carbon atoms; or both together can be an olefin, diolefin or aryne ligand, and is represented by the formula: wherein M, n and T are as defined above, R 2 is hydrogen, and R 3 , R 4 , R 5 , R 6 and R 7 are hydrogen, a heteroatom, a substituted heteroatom group, a substituted or unsubstituted alkyl group, and a substituted or unsubstituted aryl group, where when the polymerization process is a homogeneous process the monomer concentration is up to 15 mol/L.