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  1. No Access

    Article

    Modifying Effect of Polyethylene Fractions of Different Molecular Weights on the Morphology and Properties of Reactor Polymer Compositions Based on Ultrahigh Molecular Weight Polyethylene

    Reactor polymer compositions (RPCs) based on UHMWPE with Mw = 1000 kg mol–1 and low molecular weight HDPE (LMWPE) were studied. Two series of UHMWPE compositions were used to determine the influence of the molecu...

    S. S. Gostev, E. E. Starchak, T. M. Ushakova, V. G. Grinev… in Polymer Science, Series A (2023)

  2. No Access

    Article

    Immobilized organometallic catalysts in the catalytic polymerization of olefins

    Studies in the field of supported Ziegler-Natta catalysts employed for the polymerization of olefins that were begun by works performed under the guidance of Prof. Chirkov are reviewed in brief. The developmen...

    L. A. Novokshonova, I. N. Meshkova, T. M. Ushakova… in Polymer Science Series A (2008)

  3. No Access

    Article

    Modification of polyolefins as a modern strategy to designing polyolefin materials with a new complex of properties

    Experimental data on multistage catalytic olefin polymerization processes are generalized. Such processes as the sequential homo-and copolymerization of ethylene and α-olefins; the copolymerization of ethylene...

    I. N. Meshkova, T. M. Ushakova, N. M. Gul’tseva, V. G. Grinev… in Polymer Science Series A (2008)

  4. No Access

    Article

    Ethylene polymerization with catalysts on the base of Zr-cenes and methylaluminoxanes synthesized on zeolite support

    I. N. Meshkova, T. M. Ushakova, T. A. Ladygina, N. Yu. Kovaleva… in Polymer Bulletin (2000)

  5. No Access

    Article

    Influence of the catalyst matrix structure of the supported Ziegler-Natta catalysts on the homo- and copolymerization of olefins

    The vanadium catalytic complexes immobilized on the same support (aluminium hydroxide, AH) and distinguished by structure and composition have been compared for ethylene and propylene homo- and copolymerizatio...

    I. N. Meshkova, T. M. Ushakova, N. M. Gul’tseva, M. N. Larichev… in Polymer Bulletin (1997)

  6. No Access

    Article

    Influence of the nature of monomers on the activity of supported titanium catalysts in the α-olefin polymerization

    Ethylene and propylene co-polymerization and sequential polymerization with high activity supported titanium catalysts were studied. Specific rate of homopolymerization and copolymerization constants for ethyl...

    N. M. Gul'tseva, T. M. Ushakova, A. M. Aladyshev, L. N. Raspopov… in Polymer Bulletin (1992)