Results 111 to 120 of about 600,113 (211)

Polimerização 1,4-cis de butadieno com sistemas catalíticos Ziegler-Natta à base de neodímio

Química Nova, 2004
Nowadays the catalyst systems based on neodymium are the ones most used in the high cis polybutadiene production. These systems contain a neodymium compound (catalyst), an alkylaluminium compound (cocatalyst) and a halogen compound (halogenating agent ...
Mello Ivana L., Coutinho Fernanda M. B., Soares Bluma G., Nunes Denise S. S., Costa Marcos A. S., Maria Luiz Claudio de Santa   +5 more
doaj  

Influence of Ethene Addition on Ziegler-Natta Catalyst Performance in Low-pressure Propene Polymerization

, 2010
The aim of the study will be the determination of the kinetic profiles of the polymerization of propene, ethene and their mixtures with commercial Ziegler-Natta catalyst by application of two different experimental procedures.
Hoza, Adam
core   +1 more source

Ziegler-Natta catalyst alteration

, 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

Comparative Study on Kinetics of Ethylene and Propylene Polymerizations with Supported Ziegler⁻Natta Catalyst: Catalyst Fragmentation Promoted by Polymer Crystalline Lamellae. [PDF]

Polymers (Basel), 2019
Zhang Z, Jiang B, He F, Fu Z, Xu J, Fan Z.   +5 more
europepmc   +1 more source

The Effects of Preparation Methods and Internal Electron Donors on Ziegler-Natta Catalyst Performance and Polypropylene Properties. [PDF]

Polymers (Basel)
Li B, Li H, Chen Z, Hu H, Zhou Y, Mao G, Xin S.   +6 more
europepmc   +1 more source

High activity Ziegler-Natta catalyst made from Mg powder

, 2006
A series of novel high activity Ziegler-Natta catalysts were manufactured with spherical magnesium powder as the raw material. The morphology and properties of the catalysts and the prepolymer thereof were analyzed and characterized by scanning electron ...
Jin, C, Liu, F, Li, S, Wei, G, San, X
core  

The Role of Stretching-Induced Phase Transformations in the Mechanical Properties of Isotactic 1‑Butene-ethylene Copolymers from Ziegler-Natta Catalyst. [PDF]

Macromolecules
Malafronte A, Di Girolamo R, Giordano A, De Stefano F, Scoti M, De Rosa C.   +5 more
europepmc   +1 more source

Computational Study on the Inhibition Mechanisms of the Ziegler-Natta Catalyst in the Propylene Polymerization Process: Part 1 Effects of Acetylene and Methylacetylene. [PDF]

Int J Mol Sci
Hernandez-Fernandez J, Bello-León E, Marquez E.   +2 more
europepmc   +1 more source

Experimental and first-principles investigation on how support morphology determines the performance of the Ziegler-Natta catalyst during ethylene polymerization. [PDF]

Sci Rep
Saelee T, Sitthijun P, Ngamlaor C, Kerdprasit N, Rittiruam M, Khajondetchairit P, Da Silva JLF, Buasuk N, Praserthdam P, Praserthdam S.   +9 more
europepmc   +1 more source

The production of high efficiency Ziegler-Natta catalyst with dual active sites nature using cyclohexyl chloride as promoter with super activity and produced superior polyethylene with controllable molecular weight distribution. [PDF]

Des Monomers Polym, 2017
Seifali Abbas-Abadi M.
europepmc   +1 more source