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Copolymerization of ethylene with α-olefins over highly active supported Ziegler-Natta catalyst with vanadium active component

Publish Year: 1398
Type: Journal paper
Language: English
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JR_POJ-6-2_002

Index date: 27 July 2019

Copolymerization of ethylene with α-olefins over highly active supported Ziegler-Natta catalyst with vanadium active component abstract

The new highly active supported vanadium-magnesium catalyst (VMC) has been studied in α-olefin (1-butene, 1-hexene)/ ethylene copolymerization in the presence of hydrogen. Data on the effect of α-olefin/ethylene ratio in copolymerization on the content of branchings in copolymers, kinetic profile, copolymer yield, molecular weight and molecular weight distribution of copolymers have been obtained. It was found that both α-olefins are effective chain transfer agents in the ethylene-α-olefins copolymerization. The copolymerization ability of VMC is much higher than that of the well known titanium-magnesium catalysts. It was found that the use of optimal conditions of ethylene/α-olefin polymerization on the VMC catalyst makes it possible to obtain copolymers with a high yield (10-16 kg gcat-1 cat for 2 h) the copolymers having broad and bimodal MWD. Data on the branchings distribution in copolymers prepared with VMC catalyst have been obtained via fractionation of copolymers on the fractions with narrow polydispersity (Mw/Mn ≈ 2). Quite a uniform distribution of branchings over fractions with different molecular weight was found in distinction to inhomogeneous distribution of branchings in copolymers produced over the well known supported titaniu-magnesium catalyst.

Copolymerization of ethylene with α-olefins over highly active supported Ziegler-Natta catalyst with vanadium active component Keywords:

Copolymerization of ethylene with α-olefins over highly active supported Ziegler-Natta catalyst with vanadium active component authors

Zenghui Zhao

China National Petroleum Corporation, Daqing Chemical Research Institute, Daqing ۱۶۳۷۱۴, Heilongjiang, China

Tatiana Mikenas

Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Prospect Akademika Lavrentieva, ۵, Novosibirsk ۶۳۰۰۹۰, Russia

Vladimir Aleksandrovich Zakharov

Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Prospect Akademika Lavrentieva, ۵, Novosibirsk ۶۳۰۰۹۰, Russia

Marina Nikolaeva

Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Prospect Akademika Lavrentieva, ۵, Novosibirsk ۶۳۰۰۹۰, Russia

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Umberto Z, Giuliano C (1983) Control of molecular-weight distribution in ...
Shan CLP, Soares JBP, Pendilis A (2002) Mechanical properties of ...
Frank PA, Ludwing LB, Hans-Frieder E, Joachim B (2001) Bimodal ...
Matta A, Zeng Y, Taniiki T, Terano M (2012) Vanadium-modified ...
Comito RJ, Wu Zh, Zhang G, Lawrence III J A, ...
Lorber C (2009) [ONNO]-type amine bis(phenolate)-based vanadium catalyst for ethylene ...
Mikenas TB, Zakharov VA (1984) Polymerization of ethylene in the ...
Karol FG, Cann KJ, Wagner BE (1988) Development with high-activity ...
Spitz R, Patin M, Robert P, Masson P, Dupuy J ...
Zakharov VA, Echevskaya LG (1997) Kinetics of the copolymerization of ...
Mikenas TB, Zakharov VA, Echevskaya LG, Matsko MA (2001) Ethylene ...
Zakharov VA, Makhtarulin SI, Sergeev S A, Mikenas T B, ...
Zakharov VA, Echevskaya LG, Mikenas TB (1991) Studying of reaction ...
Czaja K, Bialek M (2001) Effect of hydrogen on the ...
Matsko MA, Bukatov GD, Mikenas TB, Zakharov VA (2001) Ethylene ...
Echevskaya LG, Matsko MA, Mikenas T B, Zakharov VA (2006) ...
Wang D, Zhao Z, Mikenas TB, Xiaomei Lang, Echevskaya LG, ...
Echevskaya LG, Zakharov V A, Golovin AV, Mikenas TB (1999) ...
Randall JC (1977) Polymer Sequence determination. Academic, New York ...
Seppala JV, Koivumaki J (1993) Observations on the rate enhancement ...
Cruz VL, Munoz-Escalone A, Martinez-Salazar J (1998) A theoretical study ...
Jungling S, Koltzenburg S, Multhaupt R (1997) Propene homo- and ...
Awudza JAM, Tait P J T (2008) The comonomer effect ...
Kravchenko R, Waymouth RM (1998) Ethylene− propylene copolymerization with 2-arylindene ...
Tang L-M, Li Y-G, Ye W-P, Li Y-S (2006) Ethylene–propylene ...
Tang L-M, Hu T, Li P, Li Y-S (2005) Ethylene/ ...
Gibson VC, Spitzmesser SK (2003) Advances in non-metallocene olefin polymerization ...
Coates GW, Hustad PD, Reinartz S (2002) Catalysts for the ...
Zakharov VA, Echevskaya LG, Mikenas TB, Matsko MA, Tregubov AA, ...
Matsko МA, Echevskaya LG, Zakharov VA, Nikolaeva MI, Mikenas TB, ...
Garoff T, Mannonen L, Vaananen M, Eriksson V, Kallio K, ...
Nikolaeva MI, Matsko MA, Mikenas TB, Echevskaya LG, Zakharov VA ...
Nikolaeva MI, Matsko MA, Mikenas TB, Echevskaya LG, Zakharov VA ...
Echevskaya LG, Zakharov VA (1996) Microtacticity of copolymers. Vysokomol Soedin ...
Matsko MA, Echevskaya LG, Vanina MP, Nikolaeva MI, Mikenas TB, ...
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