Výsledky vyhledávání - "V. I. Tsvetkova"

Targeted synthesis of homo-and copolymers of propylene in liquid propylene initiated by highly efficient homogenous metallocene catalysts

Autor: A. N. Klyamkina, Anton A. Koval’chuk, P. M. Nedorezova, Alexander M. Aladyshev, V. I. Tsvetkova

Publikováno v: Polymer Science Series A. 50:1151-1160

Studies devoted to the homo-and copolymerization of propylene with ethylene and higher olefins (1-butene, 1-hexene, 4-methyl-1-pentene, 1-octene) in liquid propylene under the action of homogeneous metallocene catalysts of various types are surveyed

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7de13d140a06202accc832badb8a0382
https://doi.org/10.1134/s0965545x08110059

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The role of the homogenous and heterogeneous components of ziegler catalysts in the development of polymerization activity

Autor: J. Váradi, I. Czájlik, A. Baán, N. M. Chirkov, V. I. Tsvetkova

Publikováno v: Journal of Polymer Science Part C: Polymer Symposia. 16:2069-2075

The eomposition and polymerization activity of a given catalyst system (TiCI4-Et2AlCl) were determined. The solid particles formed by the reaction of the catalyst components were separated at two given times, which were characteristic of the polymeri

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::285672108ac08d8f35b474297b80b2eb
https://doi.org/10.1002/polc.5070160422

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Synthesis of propylene-ethylene copolymers in liquid propylene using ansa-metallocenes of the C 1 symmetry

Autor: P. M. Nedorezova, E. N. Veksler, V. A. Optov, B. F. Shklyaruk, V. I. Tsvetkova, Alexander M. Aladyshev

Publikováno v: Polymer Science Series A. 49:99-107

The copolymerization of ethylene with propylene in the liquid propylene initiated by ansa-metallocenes of the C 1 symmetry, rac-[1-(9-η5-fluorenyl)-2-(5,6-cyclopenta-2-methyl-1-η5-indenyl)ethane]zirconium dichloride and rac-[1-(9-η5-fluorenyl)-2-(

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7a22112758e846b18a3ab03d7f48a83a
https://doi.org/10.1134/s0965545x07020010

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Bulk propylene polymerization in the presence of ansa-metallocenes of C 2 and C 1 symmetries: From a rigid thermoplastic to elastomeric stereoblock polypropylene

Autor: Dmitrii A. Lemenovskii, G. P. Brusova, Alexander M. Aladyshev, V. I. Tsvetkova, V. A. Optov, E. N. Veksler, P. M. Nedorezova

Publikováno v: Kinetics and Catalysis. 47:245-250

Bulk propylene polymerization in the presence of ansa-metallocenes with C2 and C1 symmetries has been studied. The catalytic activity, polymerization kinetics, and the molecular weight of polypropylene (PP) depend strongly on catalyst formation condi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f49254eed5839958421847c20e66253a
https://doi.org/10.1134/s0023158406020145

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Homo-and copolymerization of vinylcyclohexane with α-olefins in the presence of heterogeneous and homogeneous catalytic systems

Autor: V. I. Tsvetkova, L. A. Rishina, Alexander M. Aladyshev, A. N. Klyamkina, V. I. Kleiner, N. M. Galashina, P. M. Nedorezova

Publikováno v: Polymer Science Series A. 48:18-25

The polymerization and copolymerization of vinylcyclohexane with α-olefins in the presence of several heterogeneous and homogeneous catalytic systems were studied. It was shown that, with respect to activity in the polymerization of vinylcyclohexane

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::62391c383041f0aaa2fac917daa18b8b
https://doi.org/10.1134/s0965545x06010032

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[Untitled]

Autor: Alexander M. Aladyshev, Dmitry A. Lemenovskii, D.V. Savinov, E. N. Veksler, P. M. Nedorezova, V. I. Tsvetkova

Publikováno v: Kinetics and Catalysis. 44:311-318

The effects of various pathways of the formation of catalytic systems based on the rac-Me2SiInd2ZrCl2 metallocene on the activity and properties of polypropylene prepared by the bulk polymerization of propylene were studied in detail. It was found th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::734a0818daf1b018234710f3894c1247
https://doi.org/10.1023/a:1024430500100

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[Untitled]

Autor: O. N. Babkina, S. L. Saratovskikh, N. M. Bravaya, P. M. Nedorezova, V. I. Tsvetkova

Publikováno v: Kinetics and Catalysis. 43:341-350

A new efficient two-component homogeneous system consisting of (2-PhInd)2ZrMe2 and Al(iso-Bu)3 cocatalyst was developed for the synthesis of elastomeric stereoblock polypropylene. The catalytic behavior of this system was studied in toluene and liqui

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1a0866d6aecff4286a0136ddf54d3d6d
https://doi.org/10.1023/a:1016053717371

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Triisobutylaluminum as cocatalyst for zirconocenes. II. Triisobutylaluminum as a component of a cocatalyst system and as an effective cocatalyst for olefin polymerization derived from dimethylated zirconocenes

Autor: Z. M. Dzhabieva, V. I. Tsvetkova, P. M. Nedorezova, N. M. Bravaya, O. N. Babkina, S. L. Saratovskikh, A. N. Panin

Publikováno v: Journal of Polymer Science Part A: Polymer Chemistry. 39:1915-1930

An investigation of the catalytic behavior of the dimethylated zirconocenes Me2SiCp*NtBuZrMe2 [Cp* = C5(CH3)4; 1Me], Me2SiCp2ZrMe2 (2Me), Cp2ZrMe2 (3Me), Ind2ZrMe2 (4Me), Me2SiInd2ZrMe2 (5Me), Et(2-MeInd)2ZrMe2 (6Me), and Me2Si(2-MeInd)2ZrMe2 (7Me) w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b1f4e0616b5a4b6c5600f502480da498
https://doi.org/10.1002/pola.1169

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