About
18
Publications
2,137
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
204
Citations
Introduction
Current institution
Publications
Publications (18)
Adducts comprising a MgCl2, an alcohol ROH in which R is a C1-C10 hydrocarbon group, present in a molar ratio with MgCl2 ranging from 0.5 to 5 and less than 15% wt, based on the total weight of the adduct, of a metal salt of an aliphatic carboxylic acid having from 8 to 22 carbon atoms.
The present invention relates to a slurry process for preparing an ethylene polymer having a melt flow ratio F/P, according to ASTM 1238, of higher than 25, carried out in two or more stages of polymerization at temperatures in the range from 60 to 120° C., in which at least two of the said two or more polymerization stages are carried out under di...
Phase transition II → I in isotactic poly-1-butene was studied by wide- and small-angle X-ray scattering in order to follow the change of crystallinity and of the characteristic parameters of the lamellar stacks over time. Small-angle X-ray scattering experimental patterns were analyzed by a fitting method with the profiles calculated from some the...
A new process that combines the excellent morphology control of Ti-based catalysts with the unique features of polyolefins from mettalocenes has been devised. First, propylene is polymerized with the Ti-based catalysts, having spherical form; then, activated mettalocene catalysts are introduced into the porous PP spheres, through an in situ impregn...
New heterophasic copolymers with high rubber content have been synthesized by combining heterogeneous Ti-based catalysts with
metallocenes. The molecular, morphological and mechanical features of these materials were evaluated: it was pointed out that
the new copolymers, having more than 60Wt.% of rubber, perform as reinforced elastomers whereas tr...
Summary A new process for the sequential copolymerization of olefins has been devised (Multicatalysts Reactor Granule Technology);
it allows the synthesis of thermoplastic polyolefin elastomers having polypropylene from Ti-based catalysts and ethylenepropylene
rubbers from metallocenes. Such new materials have been cured with peroxides an the relev...
Temperature rising elution fractionation (TREF) was carried out on propene-co-butene random copolymers synthesized with heterogeneous Ti-based Ziegler-Natta catalysts. 13C-NMR and DSC measurements were carried out on the fractions. It was found that fractionation occurred on the basis of copolymer crystallizability, which is controlled by both ster...
The copolymerization of propylene with small amount of ethylene using MgCl2-supported stereospecific catalysts in combination with different Al-alkyls was performed. At least for the particular catalyst used, it resulted that TEA and TIBA are the preferred Al-alkyls; whereas, the mixture TEA/DEAC provides copolymers with a high amount of xylene sol...
The title reaction is an instance of a simple nucleophilic attack of neutral nitrogen on aromatic sp2 carbon. The kinetic data (obtained in dimethyl sulphoxide) are compared to the results reported by the literature for the same reaction of aliphatic amines. Some possible interactions (substrate/nucleophile, substrate/salt) preceding the attack of...
