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RISStudy on single and binary catalytic systems of pyridine-imine catalysts based on nickel and iron in synthesis of reactor blends and low-density polyethylene nanocomposites
ABSTRACT: In the presence of modified methylaluminoxane as cocatalyst, the behavior of a binary catalytic system based on pyridineimine nickel -N- and iron -F- catalysts was evaluated in order to reach a proper mixture of ...
Characterization of MAO-Modified Silicas for Ethylene Polymerization
ABSTRACT: A series of methylaluminoxane (MAO)-modified PQ and EP 12 silicas, calcined at 110, 250, and 450_C, were prepared. The resulting MAO-modified supports were characterized by a set of complementary techniques: ...
Modeling and Simulation of Olefin Polymerization at Microstructure level
ABSTRACT: A new model based on a combination of the polymeric multigrain and multilayer
models has been developed to predict the polymerization rate, particle growth, morphology,
effective parameters on ...
Synthesis of poly-a-olefins- containing rare shortchain branches by dinuclear Ni-based catalysts
1-Hexene homopolymer samples produced by a series of mononuclear -MCn, n = 1–3- and rigid/flexible bridged dinuclear -BCn, n = 1–7- Ni-based catalysts were characterized by 13C NMR, DSC, and GPC-IR analyses. Mononuclear ...
Synthesis and Microstructurral Study of Stereoblock Elastomeric Polypropylenes from Metallocene Catalyst (2-PhInd)2ZrCl2 Activated with Cocatalyst Mixtures
Various elastomeric polypropylenes (PPs) are synthe-
sized through homogeneous propylene polymerization with met-
allocene catalyst (2-PhInd)2ZrCl2 in the presence of different
cocatalyst mixtures: ...