| 简介 |
The present invention provides a method for preparing a catalyst showing excellent catalyst activity and polymerization reactivity and useful for preparing a conjugated diene-based polymer which has an excellent modification ratio and improved compounding properties, by preparing a catalyst by preforming a lanthanide rare earth element-containing compound, an alkylating agent compound and a halogen compound, with a conjugated diene-based monomer and then aging at a specific temperature for specific time, a catalyst and a method for preparing a conjugated diene-based polymer using the same. |
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