E. A. Glukhov

Influence of the structure of the organoaluminum compound on the stereoregulating heterogeneity of catalytic systems based on TiCl4

The stereoregulating heterogeneity manifested in butadiene polymerization by active sites of the titanium catalytic system formed “separately” in combination with organoaluminum ligands was examined.

Polymerization of isoprene with vanadium-containing catalysts: Kinetic nonuniformity of active centers

For the polymerization of isoprene catalyzed by vanadium-based ion-coordination systems, the kinetic nonuniformity of active centers was studied and active centers of three to four types were revealed. By the solution of inverse kinetic problems, kinetic parameters were first estimated for individual active centers. It was demonstrated that the nature of an organoaluminum compound affects the kinetic nonuniformity of a catalyst, kinetic parameters of individual active centers, and molecular characteristics of polyisoprene.

Kinetic heterogeneity of the active sites of titanium-containing catalytic systems in the stereospecific polymerization of isoprene

The kinetic heterogeneity of the active sites of titanium-containing catalytic systems in the stereospecific polymerization of isoprene was studied based on solving inverse problems for the molecular-weight distribution of polyisoprene with the use of the Tikhonov regularization method. It was found that from two to four types of active sites can occur depending on the nature of the organoaluminum compound used in the catalytic system. The rate constants of elementary steps of the polymerization process for particular types of active sites were obtained for the first time by solving inverse kinetic problems.

Modification of titanium catalytic systems for 1,4-cis-polyisoprene synthesis

The kinetics of isoprene polymerization in an aliphatic solvent on a titanium catalyst modified with n- and π-electron-donor additives, with preliminary single circulation of the reaction mixture through a tubular turbulent apparatus, was studied.

Solvent Effect on Molecular Characteristics of Polybutadiene and on the Kinetic Heterogeneity of Catalytic Systems Based on TiCl4

Solvent effect on the molecular characteristics of polybutadiene and on the kinetic heterogeneity of catalytic systems based on TiCl4 was studied.

Activity of butadiene polymerization centers at in situ formation of titanium catalysts

Directional action on the activity of macromolecule propagation centers and their typical set in synthesis of stereoregular polydienes in the presence of polycentered Ziegler-Natta catalytic systems allows control over the molecular characteristics of the polymers obtained and over the service characteristics of products thereof.

Distributions of active sites of titanium-containing catalytic system in terms of stereoregulating power and kinetic nonuniformity in butadiene polymerization

The nonuniformity of active sites of a titanium-containing catalytic system in terms of their stereoregulating ability and kinetic activity during butadiene polymerization was studied. It was shown that active sites of three types differing in stereoregulating power and kinetic activity can be formed under polymerization conditions corresponding to the maximum catalyst activity. By solving inverse kinetic problems, the rate parameters for active sites of different types were obtained.