Catalyst composition for polyethylene polymerization and preparation method of controlled crosslinked polyethylene using the same

The present invention relates to a process for the preparation of crosslinked polyethylene using a catalyst composition, and this for polyethylene polymerization. By the present invention, applying the catalyst composition to mix (混用) a metallocene catalyst compound with a specific metal of two or more as a main catalyst, a conventional peroxide initiators or the without proceeding the cross-linking reaction with radiation, the crosslinking excellent moldability than polyethylene has, it is possible to provide a polyethylene resin having improved withstand voltage characteristics than the metallocene PE-RT as a metal.