| 摘要 |
A novel process for producing homopolymers and copolymers of ethylene which involves contacting ethylene and/or ethylene and at least one or more olefin comonomer(s) under polymerization conditions with a Ziegler-Natta type catalyst substantially free of internal electron donor, trimethylaluminum and at least one compound containing at least one carbon-oxygen-carbon linkage (C-O-C) of the formula R1-O(-R2-O)n-R3 where n ranges from 0 to 30, and R1, R2 and R3 independently contain from 1 to 30 carbon atoms and from 0 to 30 heteroatoms of an element, or mixtures thereof, selected from Groups 13, 14, 15, 16 and 17 of the Periodic Table of Elements, and further wherein R1, R2 and/or R3 can be linked and form part of a cyclic or polycyclic structure. Also provided are films and articles produced therefrom.
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