Preparation method of metallocene catalyst for slurry process and preparation method of polyethylene copolymer for water pipe using the same

摘要

The present invention relates to a process for preparing a metallocene catalyst suitable for a CSTR slurry production facility and a process for producing a polyethylene copolymer having excellent processability and long-term high-temperature pressure resistance characteristics by using the metallocene catalyst, and more particularly, Mixing a solid polymethyl aluminoxane composition particle, a metallocene, an antistatic agent, and a hydrocarbon solvent having a carbon atom of 4 to 14 carbon atoms to form a slurry; Polymerizing the polyethylene by mixing and stirring the slurry, the alkyl aluminum, the hydrocarbon solvent having carbon atoms of 4 to 14 carbon atoms and the ethylene monomer prepared in the step 1; And a step of filtering and drying the obtained polyethylene, and a polyethylene copolymer produced by the method.