ORGANOCHROMIUM/ METALLOCENE COMBINATION CATALYST FOR PRODUCING BIMODAL RESINS

摘要

This invention relates to the field of olefin polymerization catalyst compositions, and methods for the polymerization and copolymerization of olefins, including polymerization methods using a supported catalyst composition. In one aspect, the present invention encompasses a catalyst comprising the contact product of at least one metallocene compound, at leas t one organochromium compound, at least one chemically-treated solid oxide, an d at least one organoaluminium compound.