Basell Poliolefine Italia S.r.l.

Andreas Neumann

Claudio Cavalieri

Paola Massari

Monica Galvan

Gianni Collina

Roberto Pantaleoni

Ofelia Fusco

Benedetta Gaddi

Antonio Mazzucco

Giampaolo Pellegatti

Francesca Tisi

Sandro Bolognesi

Marco Ciarafoni

Tiziana Caputo

Gisella Biondini

Caroline Cathelin

Stefano Squarzoni

Gabriella Sartori

A process for the preparation of high purity propylene polymers carried out in the presence of a catalyst comprising the product obtained by contacting: (a) a solid catalyst component comprising Mg, Ti and at least a first internal electron donor compound (1ID) selected among the succinates and a second internal electron donor compound (2ID) selected among the 1,3-diethers, wherein the molar ratio of first internal donor over second internal donor 1ID:2ID is comprised between 4:6 and 9:1, with(b) an organo-aluminum compound, and optionally with(c) an external electron donor compound,said process being carried out at a temperature equal or higher than 78&#xb0; C. and by employing a molar ratio of organo-aluminum compound over solid catalyst component (b):(a) of lower than 5.

Process for the preparation of high purity propylene polymers

Films or sheets of polypropylene, particularly biaxially oriented polypropylene (BOPP) films, exhibiting excellent physical and mechanical properties combined with good processing characteristics can be prepared from propylene polymers prepared in the presence of Ziegler-Natta catalysts comprising a succinate and a diether compound.

Polypropylene films and sheets

A polyolefin composition made from or containing (A) from 90.0 to 99.0 wt % of a first propylene ethylene copolymer wherein (i) the ethylene derived units is between 1.0 and 8.0 wt %; (ii) the melting temperature ranges from 135 to 155&#xb0; C.; (iii) the melt flow rate (230&#xb0; C./5 kg ISO 1133) ranges from 0.2 to 3.5 g/10 min; (iv) the xylene solubles at 25&#xb0; C. ranges from 10.0 to 4.0 wt %; (v) the polydispersity index ranges from 3.0 to 7.0; and (B) from 1.0 to 10.0 wt % of a second propylene ethylene copolymer (i) containing from 8.0 to 20.0 wt % of ethylene derived units; and having a MFR (measured at 190&#xb0; C. 2.16 kg of load) between 0.5 and 5.0 g/10 min, wherein (a) the resulting polyolefin composition has a melt flow rate (230&#xb0; C./5 kg ISO 1133) ranging from 0.2 to 4.0 g/10 min and (b) the sum A+B being 100.

Propylene-based copolymer composition for pipes

A polyolefin composition made using a propylene/ethylene copolymer (90.0 wt % to 99.0 wt %) and a heterophasic (second) propylene/ethylene copolymer (1.0 wt % to 10.0 wt %). The composition is useful for the production of pressure pipes, e.g., for use at low temperature, and of pipes for use in heat radiating systems, among other applications. The propylene/ethylene copolymer has between 1.0 wt % and 8.0 wt % ethylene derived units. The second propylene/ethylene copolymer is made using (1) a propylene homopolymer or a propylene/ethylene copolymer (12 wt % to 52 wt %) and (2) a propylene ethylene copolymer (48 wt % to 88 wt %) that has a content of ethylene derived units ranging from 15.0 wt % to 42.0 wt %.

Preparing propylene polymer compositions comprising 50 to 90% by weight of a propylene (co)polymer, and 10 to 50% by weight of an ethylene copolymer. The polymerization process includes, in the presence of a catalyst system: The catalyst system contains the product obtained by contacting:

Process for the preparation of heterophasic propylene polymer compositions

Propylene terpolymers are prepared by polymerizing propylene, ethylene and an alpha-olefin selected from the group of C-Calpha-olefins in the presence of a catalyst system obtained by contacting a solid catalyst component comprising a magnesium halide, a titanium compound having at least a Ti-halogen bond and at least two electron donor compounds one of which being present in an amount from 40 to 90% by mol with respect to the total amount of donors and selected from succinates and the other selected from 1,3 diethers, an aluminum hydrocarbyl compound, and optionally an external electron donor compound.

Process for the preparation of propylene terpolymers and terpolymers obtained thereby

The present disclosure relates to a propylene-1-hexene copolymer having:

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Ferrara, Italy

Andreas Neumann