Basell Poliolefine Italia S.r.l.

Basell Polyolefine Gmbh

Basell Poliolefine Italia, S.p.a.

Maria Di Diego

Pietro Baita

Roberta Pica

Gabriele Mei

Lorella Marturano

Giampiero Morini

Tiziano Dall'Occo

Massimo Covezzi

Lorella Pedriali

Piero Gessi

Gerhardus Meier

Gianni Collina

Dario Liguori

Ulf Schueller

Benedetta Gaddi

Antonio Mazzucco

Andreas Maus

Paolo Ferrari

Ines Mingozzi

Shahram Mihan

Bernd Lothar Marczinke

Anteo Pelliconi

Roberto Pantaleoni

Tiziana Caputo

Ofelia Fusco

Diego Brita

Anna Fait

Gerd Mannebach

Mara Destro

Riccardo Rinaldi

Enrico Balestra

Paolo Vincenzi

Nicolò Arich De Finetti

P&auml;ivi Helena Huovinen

Giuseppina Maria Algozzini

Massimo Cenci

Luca Ranzani

A catalyst component made from or containing Ti, Mg, chlorine, an amount of a first internal donor selected from esters of aliphatic monocarboxylic acids (EAA), and an amount of a second internal donor selected from cyclic ethers (CE), wherein the EAA/CE molar ratio ranges from 0.02 to less than 20.

Catalyst components for the polymerization of olefins and catalysts therefrom obtained

A process for the preparation of polyolefins carried out in the presence of an antistatic composition made from or containing: a) a compound of formula R&#x2014;OH wherein R represents hydrogen or a linear or branched, saturated alkyl group having from 1 to 15 carbon atoms; and b) an oligomeric or polymeric organic compound having one or more terminal hydroxyl groups and a viscosity at 40&#xb0; C. of at least about 20 mm/sec (DIN 51562).

Olefin polymerization process in the presence of antistatic composition

A gas-phase process for the homopolymerization or copolymerization of olefins carried out in the presence of a catalyst system formed by a contacting, in a liquid hydrocarbon and in the presence of hydrogen, (a) a solid catalyst component comprising Ti, Mg, and Cl, and optionally an internal electron donor compound, (b) an aluminum alkyl compound and optionally (c) an external donor compound.

Process for the polymerization of olefins

A Prepolymerized catalyst component for the polymerization of olefins comprising a solid catalyst component which comprises Mg, Ti, and chlorine atoms and an electron donor (ID) said prepolymerized catalyst component being characterized by the fact that:

Prepolymerized catalyst components for the polymerization of olefins

A method for feeding an antistatic compound to a polymerization reactor comprising the steps of: a) dispersing, under mixing conditions, a catalyst powder and an antistatic compound in an oil, so as to form a suspension of catalyst powder and antistatic compound in said oil; b) successively adding, under mixing conditions, a molten thickening agent to said suspension from step a), while maintaining said suspension at a temperature such that said thickening agent solidifies on contact with said suspension; c) transferring the product obtained from b) to a polymerization reactor.

Method for feeding an antistatic compound to a polymerization reactor

The present technology relates to a method of introducing a supported antistatic compound that does not comprise a transition-metal-based catalyst component for use in an olefin polymerization reactor. In some embodiments, the methods disclosed herein avoid the formation of polymer agglomerates in the reactor and minimize potentially negative effects on catalyst yield.

Method for improving the operability of an olefin polymerization reactor

The present disclosure provides a gas-phase polymerization process for preparing polyethylene, wherein halogenated alcohols in combination with a Ti based catalyst component and aluminum alkyls as co-catalyst suppress ethane formation or increase polymerization activity.

Process for the polymerization of ethylene

The present disclosure provides a catalyst system made from or containing: (A) a solid catalyst component made from or containing (i) a titanium compound supported on a magnesium dichloride; (B) an aluminum alkyl compound; and (C) a halogenated organic ester of formula A-COOR, wherein R is a C-Chydrocarbon group and A is a C-Csaturated or unsaturated hydrocarbon group in which at least one of the hydrogen atoms is replaced by a chlorine atom. The present disclosure also provides a process for preparing an olefinic polymer, including a polymerization step of polymerizing an olefin in the presence of the catalyst system. The present disclosure also provides an olefinic polymer made therefrom.

Catalyst for the polymerization of olefins

A process for preparing a polyolefin, including polymerizing olefins in the presence of an antistatic agent made from or containing an alkylene oxide derived polymer made from or containing in average from about 10 to about 200 repeating units &#x2014;(CH&#x2014;CHR&#x2014;O)&#x2014; with R being hydrogen or an alkyl group having from 1 to 6 carbon atoms, wherein the alkylene oxide derived polymer is a random copolymer of ethylene oxide and other alkylene oxides and a ratio of n:m is in the range of from 6:1 to 1:1, wherein (n) is the average number of repeating units &#x2014;(CH&#x2014;CH&#x2014;O)&#x2014; derived from ethylene oxide and (m) is the average number of repeating units &#x2014;(CH&#x2014;CHR'&#x2014;O)&#x2014; derived from the other alkylene oxides with R&#x2032; being an alkyl group having from 1 to 6 carbon atoms, and the end groups of the alkylene oxide derived polymer are &#x2014;OH groups.

Polymerization process in the presence of antistatic agent

A method for feeding an antistatic compound to a polymerization reactor, the method comprising the steps of: a) dispersing, under mixing conditions, a catalyst powder and an antistatic compound in a liquid medium, so as to form a suspension of the catalyst powder and of the antistatic compound in the liquid medium; b) transferring the obtained suspension to a polymerization reactor.

Propylene polymer compositions comprising (percent by weight): A) from 70 to 90% of a random copolymer of propylene with ethylene, containing from 1 to 6% of ethylene, having a content of fraction insoluble in xylene at room temperature (about 23&deg; C.) of not less than 93%; B) from 10% to 30% of a copolymer of propylene with ethylene, containing from 8 to 18% of ethylene; wherein the ratio (B)/C of the percent by weight of (B), with respect to the total weight of (A) and (B), to the percent by weight of ethylene in (B), with respect to the total weight of (B), represented in the above formula by C , is 2.5 or lower.

Propylene polymer compositions having improved impact strength and excellent optical properties

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Ferrara, Italy

Maria Di Diego