A fluorine-containing bis-salicylidenimine-titanium( iv ) complex TiCl 2 {η 2 -1-[C(H)=NC 6 F 4 ]-2-O-Ph(Bu t ) 2 } 2 has been synthesized and immobilized on silica gel, polysorb, and magnesium chloride. The catalytic properties of heterogenized complexes activated by organoaluminum compounds (OAC) have been studied in ethylene polymerization. it has been demonstrated that the activity of the catalytic systems obtained by simultaneous immobilization of the complex, OAC, and [Me 2 NHPh] + [B(C 6 F 5 ) 4 ] − is an order of magnitude higher than in the absence of perfluorophenylborate. Catalysts on inorganic supports exhibit higher activity than catalysts on polymer supports. The use of anhydrous magnesium chloride as a support makes it possible to obtain a highly efficient catalyst for the synthesis of ultrahigh molecular weight polyethylene (activity up to 1350 (kg of polymer) (mol Ti h atm) −1 , melting point 140–143 °C).

Experimental data on ethylene homo- and copolymerization with higher a-olefins (hex-1-ene, oct-1-ene, and dec-1-ene) by the catalytic system TiCl 2 {η 2 -1-[C(H)=N(2,3,5,6-tetrafluorophenyl)]-2-O-3,5-di-Bu t -C 6 H 2 } 2 /MAO in a Nefras medium and in toluene are presented. The catalytic system provides ultrahigh-molecular-weight polyethylene and incorporation of comonomer units at a level of 2–3 mol.% in both solvents. Nascent copolymers formed in Nefras (petroleum solvent), unlike those obtained in toluene, are characterized by two melting peaks in the DSC thermograms and only one when obtained in toluene. The molecular weight of polyolefins is efficiently controlled by the introduction of hydrogen into the system.

Experimental data on ethylene homo- and copolymerization with higher a-olefins (hex-1-ene, oct-1-ene, and dec-1-ene) by the catalytic system TiCl2{η2-1-[C(H)=N(2,3,5,6-tetrafluorophenyl)]-2-O-3,5-di-But-C6H2}2/MAO in a Nefras medium and in toluene are presented. The catalytic system provides ultrahigh-molecular-weight polyethylene and incorporation of comonomer units at a level of 2–3 mol.% in both solvents. Nascent copolymers formed in Nefras (petroleum solvent), unlike those obtained in toluene, are characterized by two melting peaks in the DSC thermograms and only one when obtained in toluene. The molecular weight of polyolefins is efficiently controlled by the introduction of hydrogen into the system.

Titanium(4+) and zirconium(4+) complexes with pyridinedicarboxylic acid derivatives have been synthesized. The composition and structure of the synthesized 2,6-bis(diphenylhydroxymethyl)pyridine complexes have been corroborated by NMR and IR spectroscopy, and elemental analysis. The complexes activated with methylaluminoxane (MAO) are catalytically active in ethylene polymerization, Depending on the Ti/Al MAO ratio, the catalytic activity of the complexes varies between 90 and 420 kg PE/mol Ti h atm.

The catalytic activity of the titanium(IV) dichloride complex with the (4R,5R)-2,2-dimethyl-1,3-dioxolane-4,5-bis(perfluorophenyldimethanol) ligand in the presence of a cocatalyst (polymethylaluminoxane, triethylaluminum, or triisobutylaluminum) in the polymerization of higher α-olefins (1-hexene, 1-octene, 1-decene) is investigated. It is shown that, depending on the types of cocatalyst and monomer and the molar ratio of components of the catalytic system, high- or ultrahigh-molecular-mass poly(α-olefins) with M w = (4 × 10 5 )−(3 × 10 6 ) can be prepared. The chain microstructure of polyhexene is examined.

Синтезированы координационные соединения титана(IV) и циркония(IV) с производными пиридиндикарбоновой кислоты. Состав и строение полученных комплексов с 2,6-бис-(дифенилгидроксиметил)пиридином были подтверждены методами ЯМР, ИК-спектроскопии, хроматографии и элементного анализа. Показано, что синтезированные соединения после активации метилалюмоксаном катализируют реакцию полимеризации этилена (в зависимости от соотношения Ti/AlMAO каталитическая активность варьирует в пределах 90–420 кг ПЭ/моль Ti ч атм).