ChemicalComposition Distribution and Microstrueture of Ethylene-Hexene Copoiynrter produced by a IVIetallocene/Ziegler-IMatta Hybrid Catalyst

摘要

Ethylene-hexene copolymers were produced using a metallocene/Ziegler-Natta hybrid catalyst supported on modified silica-magnesium bisupport (SMB), Chemical composition distributions (CCDs) and microstructures of ethylene-hexene copolymers were analyzed by stepwise crystallization and 13C NMR analyses, respectively. It was found that average sequence length of 1-hexene was not changed significantly and CCD was extended into lower temperature region with increasing 1-hexene content.