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Composition effect of highly active supported Ziegler catalysts for ethylene copolymerization with α-olefins

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Abstract

Comonomer reactivity ratios for ethylene copolymerization with propylene, butene-1 and hexene-1 over new high activity supported Ziegler catalysts and TiCl3 have been determined. It has been established that copolymerization reactivity of the catalysts decreases in the sequence: VCl4/MgCl2>δTiCl3 · 0.3 AlCl3>TiCl4/MgCl2. Copolymer density is practically independent of catalyst composition and controlled by the concentration and type of α-olefins. The catalysts examined are more active in copolymerization than in the homopolymerization of ethylene.

Abstract

Определены константы сополимеризации этилена с пропиленом, бутеном-1 и гексеном-1 на новых высокоактивных нанесенных катализаторах циглеровского типа и на треххлористом титане; показано, что сополимеризующая способность снижается в ряду катализаторов: VCl4/MgCl2> δ-TiCl3·0,3AlCl3>TiCl4/MgCl2. Плотность сополимера практически не зависит от состава катализатора, а определяется содержанием и типом α-олефина. Активность исследуемых катализаторов в процессе сополимеризации выше, чем при гомополимеризации этилена.

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Authors and Affiliations

  1. Institute of Catalysis, 630090, Novosibirsk, USSR

    L. G. Echevskaya, V. A. Zakharov & G. D. Bukatov

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  1. L. G. Echevskaya
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  2. V. A. Zakharov
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  3. G. D. Bukatov
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Echevskaya, L.G., Zakharov, V.A. & Bukatov, G.D. Composition effect of highly active supported Ziegler catalysts for ethylene copolymerization with α-olefins. React Kinet Catal Lett 34, 99–104 (1987). https://doi.org/10.1007/BF02069208

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  • DOI: https://doi.org/10.1007/BF02069208

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