| abstract |
The present invention relates to a method for preparing a high-purity metallocene catalyst capable of providing varying selectivity and high activity to a polyolefin copolymer and, particularly, can prepare a high-purity metallocene catalyst by adding, after forming a metallocene compound by reacting a ligand compound and a zirconium compound, a step of converting lithium chloride, which is contained as a reaction by-product in the metallocene compound, into a complex form, thereby effectively removing the same in the next step of extracting a catalyst. |