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Alkene Polymerization with Catalysts Containing Ionic Complexes [2L·M@dibenzo-18-crown-6]+[TiCl5·L]– (L = CH3CN, M = Li+, K+)

  • 期刊论文

  • 发表日期：

    2024年2月1日

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  • L. A. Rishina,
  • Y. V. Kissin,
  • S. S. Lalayan,
  • V. G. Krasheninnikov,
  • A. A. Zabolotnov,
  • V. A. Tuskaev,
  • S. Ch. Gagieva,
  • B. M. Bulychev

摘要

Abstract

The polymerization of ethylene and propylene and the copolymerization of ethylene with 1-octene with novel type of post-metallocene catalysts containing ionic complexes [2L·M@dibenzo-18-crown-6]+ [TiCl5·L]– (L = CH3CN, M = Li, K) are studied. The binary activator Al(C2H5)2Cl/Mg(C4H9)2 at [Al] : [Mg] ~ 3 is used as a cocatalyst. A linear crystalline polyethylene, an almost fully amorphous, atactic polypropylene, and statistical ethylene-1-octene copolymers containing from 2 to 9 mol % 1-octene are synthesized. The copolymers exhibit a broad molecular-weight distribution and a nonuniform composition distribution like copolymers synthesized over classical Ziegler–Natta catalysts and many post-metallocene systems.