Patent ID: 8759459
Filing Date: 2014-06-24
Classification: B01J,C08F

Abstract:
1. A method of polymerizing olefins, comprising: combining, within a liquid medium under non-polymerization conditions in a mix tank, at least one chromium-based olefin polymerization catalyst and at least one additive capable of increasing the activity of the at least one chromium-based olefin polymerization catalyst such that the chromium-based olefin polymerization catalyst and the at least one additive contact to produce a contact product, wherein the liquid medium comprises a reducing agent and the at least one additive comprises zeolites, silica-alumina, silica-titania, silica-zirconia, clay, or any combination thereof; and introducing the contact product, as needed, into a polymerization reactor containing at least one olefin monomer under polymerization conditions.