Abstract:
The present invention relates to a process for preparing a highly active metallocene catalyst supported on polymer bead for olefin polymerization, a metallocene catalyst prepared by the said process and a method for alkylene polymerization by employing the said catalyst. The process for preparing a highly active metallocene catalyst supported on polymer bead for olefin polymerization which comprises the steps of: dissolving divinylbenzene, vinylbenzylchloride, and an initiator in an organic solvent, mixing it with a suspension stabilizer of aqueous phase, and carrying out suspension-polymerization at the temperature of 40 to 80° C. to obtain polystyrene; swelling the polystyrene in dialcoholamine dissolved in an organic solvent at ambient temperature for 1 to 3 days, to give a polymer having a functional group of dialcoholamine; and, reacting the polymer with a metallocene compound (CpM*Cl3) dissolved in an organic solvent. The metallocene catalyst of the present invention can be used widely for ethylene polymerization, styrene polymerization and copolymerization, while replacing the conventional homogeneous catalysts.
Abstract:
PURPOSE: A method for preparing a highly active polymer dipped metallocene catalyst for the polymerization of olefins, a highly active polymer dipped metallocene catalyst prepared by the method, a polymerization method of alkylene using the catalyst and a polymerization method of alkylene and α-olefin using the catalyst are provided, which catalyst can be used in an ethylene polymerization and a styrene polymerization. CONSTITUTION: The preparation method of the catalyst comprises the steps of dissolving a divinyl benzene monomer, a vinyl benzyl chloride monomer and an initiator into an organic solvent, mixing the solution with an aqueous suspension stabilizer and preparing a polystyrene by suspension polymerization at 40-80 deg.C; swelling the polystyrene in an organic solvent where dialcoholamine is dissolved, at a room temperature for 1-3 days, to obtain a polymer having the function of dialcoholamine; and reacting the obtained polymer with an organic solvent where a metallocene compound CpM*Cl3 is dissolved. Preferably the organic solvent of the first, second and third steps are toluene, dioxane and ether or toluene, respectively. The metallocene compound contains Ti, Zr of Hf.