COMONOMER SEQUENCE DISTRIBUTION IN METALLOCENE-BASED ETHYLENE/1-BUTENE (S-34) AND ETHYLENE/1-HEXENE (S-43) COPOLYMERS

摘要

Metallocene based polyethylenes were prepared by SINOPEC’s 'metallocene adduct' technologyin a gas phase fluidized bed model reactor. The 13C-NMR spectra of ethylene/1 -butene （S-34） and ethylene/1-hexene（S-43） copolymers were studied in a manner analogous to that established by Hsieh and Cheng. Thecomonomer sequence distributions of copolymer samples were obtained. The results show that thesemetallocene based copolymers contain a small amount of butene and hexene, and the EE and EEE sequencesare dominant.