A Tandem Catalytic System for the Synthesis of Ethylene–Hex‐1‐ene Copolymers from Ethylene Stock
- 25 February 2004
- journal article
- research article
- Published by Wiley in Macromolecular Rapid Communications
- Vol. 25 (5) , 647-652
- https://doi.org/10.1002/marc.200300162
Abstract
Summary: A tandem catalytic system, composed of (η5‐C5H4CMe2C6H5)TiCl3 (1)/MMAO (modified methyl aluminoxane) and [(η5‐C5Me4)SiMe2(tBuN)]TiCl2 (2)/MMAO, was applied for the synthesis of ethylene–hex‐1‐ene copolymers with ethylene as the only monomer stock. During the reaction, 1/MMAO trimerized ethylene to hex‐1‐ene, while 2/MMAO copolymerized ethylene with the in situ produced hex‐1‐ene to poly(ethylene–hex‐1‐ene). By changing the catalyst ratio and reaction conditions, a series of copolymer grades with different hex‐1‐ene fractions at high purity were effectively produced. The overall strategy of the tandem 1/2/MMAO catalytic system. image The overall strategy of the tandem 1/2/MMAO catalytic system.Keywords
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