METHOD OF PRODUCING POLYOLEFINS USING SUPPORTED CATALYSTS

摘要

A method for preparing polyolefins is provided to control the molecular weight of the polyolefins easily by adding a first olefin polymerization catalyst and a second olefin polymerization catalyst separately. A method for preparing polyolefins includes the steps of: (i) mixing olefin with a supported catalyst for olefin comprising a first olefin polymerization catalyst, a cocatalyst, and a carrier; and (ii) thereto adding a second olefin polymerization catalyst before/after polymerizing the olefin using the supported catalyst for olefin. The first olefin polymerization catalyst and the second olefin polymerization catalyst comprise metallocene compounds.