Patent ID: 6664349
Filing Date: 2003-12-16
Classification: B01J,C08F,Y10S

Abstract:
A process which comprises:(a) combining a Group 4 metal catalyst that contains at least one boraaryl ligand with a support selected from the group consisting of inorganic oxides, inorganic chlorides, and organic polymer resins; (b) forming a slurry of the supported catalyst in an organic solvent; (c) mixing the catalyst slurry with a trialkyl aluminum compound prior to adding the catalyst slurry to a polymerization reactor; and (d) polymerizing an olefin that comprises: i) from 50 to 100 mole % of ethylene; and ii) from 0 to 50 mole % of a C3-C10 &agr;-olefin in the presence of the product of step (c) and an activator, and in the absence of hydrogen, wherein the polymer has a long-chain-branch index (LCBI) greater than about 0.67.