Results 101 to 110 of about 4,997 (220)

Control of a Fluidized Bed Polyethylene Reactor [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2008
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
doaj  

Ziegler-Natta catalyst alteration

open access: yes, 2017
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.
openaire   +1 more source

Effect of external donor and prepolymerization on the performance of Ziegler-Natta catalysts in propylene polymerization.

open access: yesRevista Técnica de la Facultad de Ingeniería, 2010
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
doaj  

Uma revisão sobre polimerização de olefinas usando catalisadores Ziegler-Natta heterogêneos A survey on olefins polymerization using heterogeneous Ziegler-Natta catalysts

open access: yesPolímeros, 2011
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
doaj  

The influence of support in Ziegler-Natta catalysts for olefin polymerization

open access: yesRevista Técnica de la Facultad de Ingeniería, 2011
Véase archivo ...
A. Parada   +3 more
doaj  

New Insight into Titanium-Magnesium Ziegler-Natta Catalysts Using Photoluminescence Spectroscopy. [PDF]

open access: yesAppl Spectrosc, 2020
Panchenko VN   +5 more
europepmc   +1 more source

Eighty years of macromolecular science: from birth to nano-, bio- and self-assembling polymers—with slight emphasis on European contributions [PDF]

open access: yes, 2018
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

open access: yesRevista Técnica de la Facultad de Ingeniería, 2011
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
doaj  

Nobelova nagrada za kemiju 2006. [PDF]

open access: yes, 2006
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
core   +1 more source

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