Basell Polyolefine Gmbh

Basell Poliolefine Italia S.r.l.

Eleonora Ciaccia

Luigi Resconi

Shahram Mihan

Giampaolo Pellegatti

Friederike Morhard

Claudio Cavalieri

Gerhardus Meier

Marco Ciarafoni

Dieter Lilge

Ilya Nifant'ev

Roberto Pantaleoni

Tiziana Caputo

Yoshikuni Okumura

Iakovos Vittorias

Pavel V Ivchenko

Gerd Mannebach

Caroline Cathelin

Francesca Focante

Lenka Lukesova

Marco Izzi

Giansiro Prini

Maclovio Herrera Salinas

Gianpiero Ferraro

Ambra Montaletti

Alberta De Capua

Alberto Nardin

Daniele Po

Alessia Di Capua

Antonio Riemma

Maclovio Herrara Salinas

A polypropylene composition made from or containing:

Polypropylene composition

New ethylene polymers having broad molecular weight distribution and long-chain branching, above all at high molecular weight fractions; the polymers have strain hardening equal or higher than 1.4 (at constant elongational rate of 0.5 s, at 150&#xb0; C.), branching index g' equal or lower than 0.9 (at Mw of 2&#xb7;10g/mol). The polymers are prepared by using a mixed catalyst system comprising a polymerization catalyst based on a late transition metal component having a tridentate ligand, and a Ziegler polymerization catalyst annealed at a temperature higher than 100&#xb0; C., for a time of at least 10 minutes.

Process for the polymerization of ethylene, and ethylene polymers having broad molecular weight distribution and long-chain branching

A multistage process for the homo or copolymerization of ethylene carried out in the presence of a catalyst system comprising at least one polymerization catalyst (A) based on a late transition metal component having a tridentate ligand which bears at least two ortho.ortho-disubstituted aryl radicals, at least one Ziegler polymerization catalyst (B), and at least a Lewis acid activating compound (C), wherein the molar ratio of the metal of the activating compound (C) to the late transition metal of catalyst (A) is different in the two polymerizations steps. Catalysts (A) and (B) may be selectively controlled by varying the amount of activating compound (C).

Multistage process for the polymerization of olefins

A process for preparing a polymer containing derived units of one or more alpha olefins of formula CH&#x2550;CHW wherein W is a C-Chydrocarbon radical and optionally from 0 to 81% by mol of derived units of propylene or 1-butene, comprising contacting under polymerization conditions one or more alpha olefins of formula CH&#x2550;CHW and optionally propylene or 1-butene in the presence of a catalyst system obtainable by contacting: a) a metallocene compound of formula (I) 

Process for polymerizaing 1-hexene or higher alpha-olefins

A process for preparing a polymer containing derived units of one or more alpha olefins of formula CH&#x2550;CHW wherein W is a C-Chydrocarbon radical and optionally from 0 to 81% by mol of derived units of propylene or 1-butene, comprising contacting under polymerization conditions one or more alpha olefins of formula CH&#x2550;CHW and optionally propylene or-butene in the presence of a catalyst system obtainable by contacting: 

Process for polymerizing 1-hexene or higher alpha-olefins

A bridged metallocene compound of formula (I) wherein: M is an atom of a transition metal; X, is a hydrogen atom, a halogen atom, or a hydrocarbon-based group; R1 is a C1-C40 hydrocarbon radical; R2 and R3, form together a condensed 3-7 membered ring; R4 is a hydrogen atom or a C1-C40 hydrocarbon radical; W is an aromatic 5 or 6 membered ring. 

Metallocene compounds

A multistep process comprising the following steps: 

Process for the polymerization of olefins

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Ferrara, Italy

Eleonora Ciaccia