초록 |
In this study, the preparations of ultra high molecular weight polyethylene using immobilized titanium or zirconium complexes with bis(phenoxy-imine) ligands were investigated. Using silica as a carrier, methods for the effective activation and immobilization of the single-site catalysts were studied. Employing the immobilized catalyst, the polymerization characteristics of ethylene were investigated at various metal contents, temperature and pressure. Acknowledgements: This work was supported by Ministry of Knowledge Economy (MKE) grant funded by the Korea government (MKE, No. 10028384-2008-13). |