Results 101 to 110 of about 4,997 (220)
Control of a Fluidized Bed Polyethylene Reactor [PDF]
In present paper, dynamic behavior and control of a fluidized bed reactor for polyethylene production has been considered. A double active sites model for Ziegler-Natta catalysts is used for simulation of polymerization reaction. Hydrodynamic behavior of
Omid Vahidi +2 more
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Ziegler-Natta catalyst alteration
Ziegler-Natta (ZN) catalysts are among the most important catalysts for the industrial production of plastics. The main components of ZN catalysts are TiCl4 in combination with an organic aluminum component as a cocatalyst, whereas a wide range of additional components exists which influence the catalyst behavior.
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In a batch-wise operated autoclave reactor, liquid propylene was polymerized using two Ziegler-Natta catalytic systems: TiCl4/MgCl2/phthalate (A) and TiCl4/MgCl2/1,3-diether (B). The influence of cyclohexylmethyldimethoxysilane, used as external donor (
Francisco Osorio +3 more
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A produção em larga escala de materiais poliméricos de elevado interesse industrial, provenientes da polimerização estereoespecífica de olefinas, tornou-se possível depois do advento dos catalisadores Ziegler-Natta.
Fabricio Machado, José Carlos Pinto
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Homogeneous vanadium-based catalysts for the Ziegler–Natta Polymerization of α-Olefins [PDF]
Boersma, J., Hagen, H., van Koten, G.
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The influence of support in Ziegler-Natta catalysts for olefin polymerization
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A. Parada +3 more
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New Insight into Titanium-Magnesium Ziegler-Natta Catalysts Using Photoluminescence Spectroscopy. [PDF]
Panchenko VN +5 more
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Eighty years of macromolecular science: from birth to nano-, bio- and self-assembling polymers—with slight emphasis on European contributions [PDF]
A definition of macromolecular science (as opposed to polymer science and engineering) is given, from which the year 1930 is derived as the year of its birth. The scope of treatment of this paper will be limited to solid technical polymers.
Kausch-Blecken von Schmeling, Hans-Henning
core
The effect of electron donors in Ziegler-Natta catalysts supported on recrystallized MgC12
The Ziegler-Natta catalysts based on TiCl4 supported on MgCl2 which was recristallized by evaporation, were prepared. Ethyl benzoate (EB) and dioctyl phtalate (DOP) were used as internal Lewis bases.
Juan Chirinos +3 more
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Nobelova nagrada za kemiju 2006. [PDF]
Ovogodišnju Nobelovu nagradu za kemiju podijelila su trojica dobitnika: Francuz Yves Chauvin, Amerikanci Robert H. Grubbs i Richard R. Schrock. Prema obrazloÞenju Kraljevske švedske akademije znanosti, Nobelova nagrada dodijeljena im je za razvoj ...
L. Frkanec, T. Portada
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