Basell Poliolefine Italia S.r.l.

Basell Polyolefine Gmbh

Basell Poliolefine Italia, S.p.a.

Basell Poyloefine Gmbh

Simona Guidotti

Giampiero Morini

Luigi Resconi

Dario Liguori

Fabrizio Piemontesi

Joachim T M Pater

Alessandro Mignogna

Gianni Vitale

Tiziano Dall'Occo

Diego Brita

Davide Balboni

Giampaolo Pellegatti

Simona Esposito

Shahram Mihan

Sandor M Nagy

Daniel F White

Ilya Nifant'ev

Daniele Bigiavi

Maria Silvia Tonti

Xueyong Yang

Christopher D Smith

Sheri E Davis

Rita Martelli

Gianni Collina

Marc Oliver Kristen

Roberto Pantaleoni

Ofelia Fusco

Anna Fait

Benedetta Gaddi

Martin Schneider

Antonio Mazzucco

Volker Fraaije

Pavel V Ivchenko

Stefano Spataro

Cornelia Fritze

David L Ramage

Giovanni Baruzzi

Reynald Chevalier

Caroline Cathelin

Roberta Marchini

Antonio Cristofori

Jörg Ludwig Schulte

Igor Kashulin

Vladimir V Bagrov

Friederike Morhard

Davide Tartari

Francesca Focante

Isabella Camurati

Ilya P Laishevtsev

Ilya E Nifant'ev

Masaki Fushimi

Marco Bocchino

Yulenty Deal

Joachim Tm Pater

Iolanda Santoriello

Cristiano Grandini

Francesco Menichelli

Jochem T M Pater

Sophia A Toloraya

Joachim TM Pater

Jochemm T M Pater

A catalyst for the polymerization of olefins made from or containing (a) a solid catalyst component containing Mg, Ti and optionally an internal electron donor compound (ID), (b) an aluminum alky compound, and (c) an external electron donor (ED) selected from non-aromatic diazo compounds.

Catalyst for the polymerization of olefins

A solid catalyst component for the polymerization of olefins CH&#x2550;CHR, wherein R is hydrogen or a hydrocarbon radical with 1-12 carbon atoms, made from or containing Mg, Ti, Bi, a halogen and an electron donor.

Components and catalysts for the polymerization of olefins

Methods of depolymerizing polyolefin-based material into useful petrochemical products using metal oxides and heat are described. The metal oxides improve the depolymerization reaction by decreasing the onset temperature for the depolymerization, which results in a higher depolymerization rate and a shorter residence time in the depolymerization unit, allowing for a predictable depolymerization reaction, and decreasing the branching or aromatic formations in the product.

Polyolefin depolymerization with metal oxides

A method of depolymerizing plastics using a halloysite catalyst is described herein. The method reduces the energy required for the depolymerization process while achieving improved depolymerization results.

Plastic depolymerization using halloysite

A catalyst mixture made from or containing (a) particles of a solid catalyst component comprising Ti, Mg, Cl, and (b) from 0.5 to 5.0% by weight, based upon the total weight of the mixture, of particles of a solid compound having particle size ranging from 0.1 &#x3bc;m to 1 mm containing more than 50% by weight of SiOunits.

Catalyst components for the polymerization of olefins

A solid catalyst component for the polymerization of olefins CH&#x2550;CHR in which R is hydrogen or a hydrocarbon radical with 1-12 carbon atoms, made from or containing Mg, Ti, Bi, halogen and an electron donor obtained from a process including the steps: (a) dissolving a Mg(OR)compound wherein R groups, equal to or different from each other, are C-Chydrocarbon groups optionally containing a heteroatom selected from O, N and halogen, in an organic liquid medium, thereby forming a first liquid mixture; (b) contacting the first liquid mixture (a) with TiCl, thereby forming a second liquid mixture absent a solid phase, and (c) subjecting the second liquid mixture (b) to conditions, whereby solid catalyst particles are formed, wherein (i) a Bi compound and (ii) a bidentate electron donor compound are present in one or more of steps (a) to (c) and/or contacted with the solid catalyst particles obtained from (c).

A catalyst component for the polymerization of olefins, comprising Ti, Mg, halogen, an electron donor (ID) selected from the group consisting of aliphatic cyclic ethers and alkyl esters of aliphatic monocarboxylic acids and a compound of a metal selected from the group consisting of Zn and Cu, wherein the catalyst component is devoid of Zn&#x2014;C or Cu&#x2014;C bonds and the Mg/Ti molar ratio ranges from 4.0 to 50.0.

A process for the preparation of a solid catalyst component for the homo or copolymerization of olefins, wherein the solid catalyst component is made from or contains Mg, Ti, halogen and an electron donor selected from cycloalkyl ethers, wherein the process includes the steps of (a) dissolving a Mg based compound and a TiClbased compound in a liquid medium further made from or containing a cycloalkyl ether and a compound of formula ROH where Ris a C-Chydrocarbon group, in which the Ti/Mg molar ratio ranges from 0.1 to 0.5, the cycloalkyl ether/Mg ratio ranges from 1 to 4 and the ROH/Mg molar ratio ranges from 1 to 4; and (b) adding, to the solution coming from step (a), SiClin an amount such that the ROH/SiClmolar ratio ranges from 0.5 to 1.5 and maintaining the temperature in the range 50-150&#xb0; C. thereby precipitating the solid catalyst component particles.

The present disclosure provides a solid catalyst component obtainable by a process including: (a) a first step in which Ti(OEt), is reacted with a Mg based compound of formula MgCl(OR), where n is from about 0.5 to about 1.5, Ris a C-Calkyl groups, the Ti(OEt)and the Mg compound are used in amounts such that the Ti/Mg molar ratio is of about 0.2 to about 0.4, the reaction temperature is about 110 to about 130&#xb0; C., and the reaction time is about 2 to about 5 hours; and (b) a subsequent step in which the product obtained in step (a) is reacted with a Ti compound of the formula Ti(OR)Cl, where y is a number between 3 and 4.

Catalyst components component for the (co)polymerization of olefins CH&#x2550;CHR, in which R is a hydrocarbyl radical with 1-12 carbon atoms, optionally in mixture with ethylene, comprising Ti, Mg, Zn, Cl, and an electron donor compound characterized by the fact that more than 50% of the titanium atoms are in the +4 valence state, and that the amount of Zn ranges from 0.1 to 4% by weight based on then total weight of said solid catalyst component.

Catalyst components for the polymerization of olefins and catalysts therefrom obtained

A catalyst component comprising Ti, Mg, Cl, and an electron donor compound having porosity of at least 0.2 cm/g and characterized by the fact that it further comprises Cu oxide, with the proviso that when the electron donor compound is selected from esters of phthalic acids, the porosity is of at least 0.45 cm/g.

A catalyst system comprising the product obtained by contacting (a) a solid catalyst component containing Mg, Ti, halogen and at least an electron donor compound selected from phenylene aromatic diesters of a specific formula

Catalyst system for the polymerization of olefins

The present disclosure relates to a solid catalyst component for the (co)polymerization of olefins CH&#x2550;CHR, in which R is hydrogen or a hydrocarbyl radical with 1-12 carbon atoms, comprising Ti, Mg, and Cl, and optionally an electron donor compound selected from the group consisting of ethers, amines, silanes, carbamates ketones, esters of aliphatic acids, alkyl and aryl esters of optionally substituted aromatic polycarboxylic acids, diol derivatives chosen among monoesters monocarbamates and monoesters monocarbonates or mixtures thereof, comprising from 0.1 to 50% wt of Bi with respect to the total weight of the solid catalyst component.

A solid catalyst component for the polymerization of olefins comprising Mg, Ti, Cl and at least an electron donor compound which is the reaction product obtained by bringing into contact a Mg compound and a Ti compound having at least a Ti-halogen bond with an electron donor selected from specific diphenol derivatives.

The present disclosure relates to a process for the preparation of a porous propylene carried out in the presence of a catalyst system comprising (a) a Ziegler-Natta catalyst containing at least two electron donor compounds, one of which is present in an amount from 50 to 90% by mol with respect to the total amount of donors and selected from succinates, and the other being selected from 1,3 diethers, (b) an aluminum alkyl and comprising the following steps:

Process for the preparation of porous propylene polymers

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Ferrara, Italy

Simona Guidotti