This article reviews the recent developments of Ziegler-Natta and metallocene catalysts for
olefin polymerizations. The roles of magnesium dichloride and electron donors on the …

Heterogeneous catalysis for olefin polymerization is one of the most relevant industrial
processes in terms of worldwide diffusion, material volume, and economic turnover. At the …

Polyolefins represented by polyethylene (PE) and polypropylene (PP) are indispensable
materials in our daily lives. TiCl3 catalysts, established by Ziegler and Natta in the 1950s …

Three diethers, 2, 2-diisobutyl-1, 3-dimethoxypropane, 2, 2-dicyclopentyl-1, 3-
dimethoxypropane, and 2-ethyl-2-butyl-1, 3-dimethoxypropane, differing in the bulkiness of …

An active model for a Ziegler–Natta propylene polymerization catalyst has been prepared by
spin-coating of a MgCl2/diether donor solution in ethanol on a flat silicon wafer, followed by …

A study on a new generation of MgCl2-supported Ziegler− Natta catalysts, which contain
dialkylpropane diethers as internal donors and have the property of producing highly active …

Three pairs of alkoxysilanes,(a) Me (EtO) 3Si, Ph (EtO) 3Si,(b) Ph2 (MeO) 2Si, Ph2 (EtO)
2Si,(c) Ph2 (EtO) 2Si, Ph (EtO) 3Si, differing only in one parameter, have been used as …

Four R1R2Si (OMe) 2 type compounds were added as an external electron donor (De) in
propylene polymerization with TiCl4/Di/MgCl2 type supported Ziegler–Natta catalysts (Di …

Based on our previous study on the donor‐free TiCl4/MgCl2 catalyst, the stereospecific
nature of active sites on this catalyst after the addition of an internal donor, ethylbenzoate …

The stopped‐flow method, by which a quasi‐living polymerization process can be realized
within an extremely short period (ca. 0.2 s), has been proven to be one of the most powerful …