For over thirty years after the discovery of stereoselective olefin polymerization in 1954, the
word 'polypropylene'has meant, both scientifically and commercially, little else than the …

The stereosequence distribution of the “atactic” and “isotactic” fractions of a polypropylene
sample made with a MgCl2-supported catalyst was determined by means of high-resolution …

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 microstructures of two poly (propylene) s with matched molar masses and overall defect
concentrations are inferred from the crystallization behavior of their narrow molar mass …

Ziegler-Natta catalyst is one of the most important discoveries of the 20th century in the
chemistry field.[1] As one of the most typical examples, MgCl2-supported Ziegler-Natta …

The 150 MHz 13C NMR microstructural analysis of polypropylene samples produced with
two representative “oscillating” metallocene catalysts of largely different steric hindrance …

Recently we reported the synthesis and activation of zirconium dialkyl complexes bearing
arylated diamido pyridine ligands,[(MesNCH2) 2C (CH3)(2-C5H4N)] 2-([MesNpy] 2-), and …

It was well known that the defects in the polymer chains could significantly influence the
crystallization process of semi-crystalline polymers. In this work, the role of defect distribution …

This study reports a reactive extrusion process leading to very high levels of anhydride
grafting (2.5–3 wt%) along polypropylene backbone without recovering grafted PP waxes at …

The™ metallocene breakthrough∫[1, 2] has made the dream of tailoring an olefin
polymerization catalyst for a desired polymer architecture move closer to reality. In less than …