Himont Incorporated

Montedison S.p.a.

Basell Polyolefine Gmbh

Basell Poliolefine Italia S.r.l.

Montell North America Inc.

Basell Poliolefine Italia, S.p.a.

E.i. Dupont De Nemours and Company

Basell Technology Company B.v.

Baselltech USA Inc.

Montell Technology Company Bv

Giuliano Cecchin

Anteo Pelliconi

Floriano Guglielmi

Gianni Collina

Massimo Covezzi

Paolo Ferrari

Enrico Albizzati

Marco Ciarafoni

Antonio Ciarrocchi

Remo Anibaldi

Giampiero Morini

Tiziano Dall'Occo

Gianni Vitale

Anthony J DeNicola, Jr

Luciano Luciani

Anna Fait

Edward Bryan Coughlin

Enea Garagnani

Giovanni Baruzzi

Angelo Ferraro

Umberto Scata

Decio Malucelli

Paola Sgarzi

Antonio Monte

Emanuele Burgin

Renato Ghisellini

Giovanni Patroncini

Livio Balzani

Floriano Gugliemi

Felice Polato

Lewis R Leonard

Pier Luigi Griselli

Francesco Zerega

Process for the preparation of ethylene copolymers comprising the copolymerization of ethylene with olefins CH&#x2550;CHR, in which R is a hydrocarbyl radical with 1-12 carbon atoms carried out in the presence of a catalyst comprising (i) a solid catalyst component comprising Mg, Ti, halogen and specific 1,3-diethers of formula (I) in which R is a C-Chydrocarbon group, Ris methyl or ethyl, optionally containing a heteroatom, and Ris a C4-C12 linear alkyl optionally containing a heteroatom, and (ii) an organo-Al compound. The obtained copolymers are endowed with good comonomer distribution. 

Process for the preparation of ethylene copolymers

Crystalline polymers and copolymers of propylene having total MIL values&#x3e;2 g/10 minutes, total [&#x3b7;] values in tetrahydronaphthalene at 135&#xb0; C.&#x2266;2.8 dl/g, mW/MN values&#x3e;20, a fraction insoluble in xylene at 25&#xb0; C.&#x2267;94, and including from 10 to 60% by weight of a fraction (A) having [&#x3b7;]&#x2267;2.6, are prepared by way of sequential polymerization in at least two stages, in the presence of a particular Ziegler-Natta catalysts supported on magnesium halides. These polymers have high melt strength, high mechanical properties, and are particularly adequate for the manufacture of articles by using various conversion technologies, such as for example extrusion in thin sheets to be subjected to thermoforming, as well as for injection molding, and blow molding.

Crystalline polymers of propylene having improved processability in the molten state and process for their preparation

Crystalline polymers and copolymers of propylene having total MIL values&#x3e;2 g/10 minutes, total [&#x3b7;] values in tetrahydronaphthalene at 135&#xb0; C.&#x2266;2/8 dl/g, Mw/Mn values&#x3e;20, a fraction insoluble in xylene at 25&#xb0; C.&#x2267;94, and including from 10 to 60% by weight of a fraction (A) having [&#x3b7;]&#x2267;2.6, are prepared by way of sequential polymerization in at least two stages, in the presence of particular Ziegler-Natta catalysts supported on magnesium halides. These polymers have high melt strength, high mechanical properties, and are particularly adequate for the manufacture of articles by using various conversion technologies, such as for example extrusion in thin sheets to be subjected to thermoforming, as well as for injection molding, and blow molding.

The present invention relates to butene-1 homopolymers, or copolymers containing up to 20% by weight of alpha olefins having from 2 to 10 carbon atoms other than butene-1, characterized by the following properties: (i) a Molecular Weight Distribution (MWD) in terms of Mw/Mn, measured by GPC analysis according to the method specified, of lower than 6; and (ii) a melt strength (measured according to the method specified below) higher than 2.8.

Butene-1 (co)polymers and process for their preparation

Multi-stage process for the polymerization of olefins CH&#x2550;CHR, where R is hydrogen or a C&#x2013;Calkyl, cycloalkyl or aryl radical, comprising: (I) a first polymerization stage carried out in the presence of a catalyst comprising the product of the reaction between an alkyl-Al compound and a solid component comprising at least one compound of transition metal Mnot containing M-&#x3c0; bonds, thus obtaining a porous polymer, (II) a treatment stage, wherein said porous polymer is contacted with a compound capable of deactivating the catalyst used in stage (I) and with a late transition metal complex; and (III) a second stage of polymerization, carried out in the presence of the product obtained from treatment stage (II).

Multi-stage process for the (CO) polymerization of olefins

Thermoplastic olefin elastomers and process for their preparation

Polyethylene composition comprising (percentages by weight): A) from 60 to 95% of an LLDPE copolymer having a density from 0.905 to 0.9 g/cm , M /M values less than 4 and F/E ratio values greater than 20; B) from 5 to 40% of one or more crystalline copolymers of propylene selected from among defined copolymers of propylene with ethylene and/or higher alpha-olefins.

Polyethylene compositions having improved optical and mechanical properties and improved processability in the melted state

Polyolefin compositions comprising (percent by weight) A) 60%-95% of a crystalline polypropylene component having a Melt Flow Rate (MFR ) value of from 2.5 to 50 g/10 min. and containing from 20% to 80% of a fraction A ) having MFR from 0.5 to 8 g/10 min., and from 20% to 80% of a fraction A ); B) 5%-40% of a copolymer of ethylene with one or more C -C &agr;-olefin(s) containing from 10 to 40% of said C -C &agr;-olefin(s); the ratio MFR /MFR being from 2 to 25; the percentages of A) and B) being referred to the sum of A) and B), and the percentages of A ) and A ) being referred to the sun of A ) and A ).

Impact resistant polyolefin compositions

Polyethylene composition comprising (percentages by weight): A) from 60 to 95% of an LLDPE copolymer having a density from 0.905 to 0.935 g/cm , {overscore (M)} /{overscore (M)} values less than 4 and F/E ratio values from 10 to 20; B) from 5 to 40% of one or more crystalline copolymers of propylene selected among defined copolymers of propylene with ethylene and/or higher alpha-olefins.

Polyethylene compositions having improved mechanical properties and improved processability in the melted state

Polybutene-1 (co)polymers and process for their preparation

Polyolefin compositions having good transparency and impact resistance even at low temperatures including (by weight):

Polyolefin compositions having good transparency and impact resistance

Disclosed is a thermoplastic olefin polymer having elastic properties comprising

Thermoplastic olefin polymer and method of preparing same

Polypropylene compositions having valued plasto-elastic properties, in the form of spheroidal flowable particles with an average diameter included between 500 and 7000 um having the following composition:

Plasto-elastic polypropylene compositions

Propylene polymer compositions having good transparency and improved impact resistance at low temperature comprising:

Propylene polymer composition having good transparency and improved

Elastoplastic polyolefin compositions endowed with high flexibility, comprising:

Elastoplastic polyolefin compositions

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Ferrara, Italy

Giuliano Cecchin