WANG Ruyi, ZHENG Yuansuo, CUI Nannan, ZHANG Zhicheng, KE Yucai, HU Youliang. LLDPE PREPARATION BY in-situ COPOLYMERIZATION OF ETHYLENE USING MATALLOCENE/ (2-Me-3-ClPh)2PBIMe2FeCl2/MAO TANDEM CATALYZERS[J]. Acta Polymerica Sinica, 2005,(1):132-136.
WANG Ruyi, ZHENG Yuansuo, CUI Nannan, ZHANG Zhicheng, KE Yucai, HU Youliang. LLDPE PREPARATION BY in-situ COPOLYMERIZATION OF ETHYLENE USING MATALLOCENE/ (2-Me-3-ClPh)2PBIMe2FeCl2/MAO TANDEM CATALYZERS[J]. Acta Polymerica Sinica, 2005,(1):132-136.DOI:
A novel late transitional metal catalyst-(2-Me-3-ClPh)2PBIMe2FeCl2——has been synthesized having a high oligomerization activity up to 1.0×107g oligomed(mol Fe·h).Using this oligomerization catalyst and metallocene catalyst—rac—C2H4(Ind)2ZrCl2in situ copolymerization of ethylene having a high activity[ >106g PE/(mol cat·h)].13C-NMR shows that the LLDPE is obtained.In addition
the presence of unreacted α-olefin was not detected since there is no evident resonance signal at 29.29 and 29.42.which proves that this dual functional catalyst system has a good match during in situ copolymerization.With increasing the Fe/Zr ratio
the densities of polymers and the melting points of polymers obtained from DSC ale in a descending trend.Meanwhile
the similar phenomenon is also found when the reaction temperature decreases.