Zobrazeno 1 - 10
of 23
pro vyhledávání: '"L. G. Echevskaya"'
Publikováno v:
Kinetics and Catalysis. 61:40-57
The review summarizes the results obtained by the authors in a study of the polymerization of 1‑hexene on a supported titanium–magnesium catalyst. The effects of the composition of a complex titanium–magnesium catalytic system, the composition
Publikováno v:
Catalysis in Industry. 11:224-233
Data on the effect the concentrations of the monomer, triethylaluminium, and hydrogen on the molecular weight of polyhexene upon 1-hexene polymerization over supported titanium–magnesium catalyst are obtained. The ratios between propagation rate co
Publikováno v:
Kataliz v promyshlennosti. 19:104-113
The influence of concentrations of the monomer, triethylaluminum, and hydrogen on the molecular mass of polyhexene obtained by polymerization of hexene-1 over a supported titanium-magnesium catalyst was studied. Ratios of rate constants of the transf
Publikováno v:
Catalysis in Industry. 3:122-127
Summarized results are presented from studying the formation of the active component of supported Ziegler type catalysts, investigating the effect of the composition of these catalysts on the molecular mass characteristics of PE, and seeking new meth
Autor:
Vladimir A. Zakharov, Marina I. Nikolaeva, L. G. Echevskaya, T. B. Mikenas, M. P. Vanina, Mikhail A. Matsko
Publikováno v:
Catalysis in Industry. 3:109-115
The mechanical and rheological properties of ethylene α-olefin copolymers are governed by a molecular and supramolecular structure that depends on its molecular weight characteristics, comonomer concentration, and the uniformity of branching distrib
Publikováno v:
Catalysis in Industry. 3:103-108
The chain transfer reaction with hydrogen at propylene polymerization over Ti-Mg catalysts (TMCs) of composition TiCl4/D1/MgCl2-AlEt3/D2 is studied in a wide hydrogen concentration range. A two-step mechanism of this reaction is suggested. This mecha
Publikováno v:
Polymer Science Series A. 53:296-302
The compositional heterogeneity of ethylene-1-hexene copolymers synthesized with various types of supported catalysts, namely, the titanium-magnesium catalyst TiCl4/MgCl2 and the zirconocene catalyst SiO2(MAO)/Me2Si(Ind)2ZrCl2, is studied via the met
Autor:
Nina V. Semikolenova, A. A. Barabanov, Vladimir A. Zakharov, L. G. Echevskaya, Mikhail A. Matsko
Publikováno v:
Kinetics and Catalysis. 52:217-221
Changes in the molecular-weight characteristics of the product of ethylene polymerization in the course of reaction in the presence of a homogeneous catalytic system and in the number and reactivity of catalyst active sites were studied. The catalyti
Publikováno v:
Russian Journal of Applied Chemistry. 83:2210-2219
On the basis of new methods of synthesis of magnesium-containing carriers with the use of soluble organomagnesium compounds a wide spectrum of supported titanium-magnesium and vanadium-magnesium catalysts of various composition with controllable opti
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 45:5057-5066
The effects of polymerization temperature, polymerization time, ethylene and hydrogen concentration, and effect of comonomers (hexene-1, propylene) on the activity of supported catalyst of composition LFeCl2/MgCl2-Al(i-Bu)3 (L ¼ 2,6-bis(1- (2,6-dime