Patent ID: 7446073

Claim:
A supported catalyst system for polymerizing ethylene alone or in combination with one or more olefin(s), comprising a support and a cyclic germanium bridged catalyst compound and an activator, wherein the cyclic germanium bridged catalyst compound is represented by the formula: L A (R′GeR′) x L B MQ n (I) wherein: M is a Group 3 to 7 transition metal; each of L A and L B is an unsubstituted or substituted ligand, wherein L A and L B may be the same or different, wherein the ligand is selected from the group consisting of cyclopentadienyl ligands, cyclooctatetraendiyl ligands, indenyl ligands, benzindenyl ligands, fluorenyl ligands, octahydrofluorenyl ligands, azenyl ligands, azulene ligands, pentalene ligands, phosphoryl ligands, pyrrolyl ligands, pyrazolyl ligands, carbazolyl ligands, borabenzene ligands, and hydrogenated versions of each; pentadiene ligands, imide ligands, amide ligands, phosphide ligands alkoxide ligands, carbolide ligands, borollide ligands, porphyrin ligands, phthalocyanine ligands, corrin ligands, polyazamacrocycle ligands, said ligands bonded to M; (R′GeR′) x is a cyclic bridging group bridging L A and L B , and the two R's are joined to form a cyclic ring or ring system with Ge; independently, each Q is a monoanionic ligand, or optionally two Q's together form a divalent anionic chelating ligand; n is 0, 1 or 2 depending on the formal oxidation state of M; x is an integer from 1 to 4; and wherein the catalyst is capable of producing a polymer having a molecular weight distribution of greater than 2.5 to less than 8, at a temperature from about 60 to about 115° C.