Basell Polyolefine Gmbh

Basell Poliolefine Italia S.r.l.

Borealis Ag

Basell Technology Company B.v.

Basell Poliolefine Italia, S.p.a.

E.i. Dupont De Nemours and Company

Montell Technology Company Bv

Basell Poyloefine Gmbh

Anna Fait

Luigi Resconi

Gabriele Govoni

Mario Sacchetti

Noureddine Ajellal

Alexander Z Voskoboynikov

Gianni Collina

Vyatcheslav V Izmer

Dmitry S Kononovich

Massimo Covezzi

Rafael Sablong

Timo Sciarone

Giampiero Morini

Pietro Baita

Benedetta Gaddi

Daniele Evangelisti

Oleg Vladimirovich Samsonov

Daniele Bigiavi

Arrigo Arletti

Simona Guidotti

Diego Brita

Ofelia Fusco

Giuliano Cecchin

Giuseppe Penzo

Edward Bryan Coughlin

Giovanni Baruzzi

Maria Di Diego

Lorella Marturano

Maria Silvia Tonti

Friederike Morhard

Paolo Vincenzi

Gilberto Moscardi

Irfan Saeed

Lorella Pedriali

Rosa Spoto

Nicolò Arich De Finetti

Alexander Koeppl

Nicoletta Mascellani

Giovanni Patroncini

Lucia Caiazzo

Maria Ranieri

David Quin

Giuseppina Maria Algozzini

Almerinda Di Benedetto

Roberto Flammini

Harry Mavridis

Luca Ranzani

Derenzio Benetti

Catalyst system for producing ethylene copolymers in a high temperature solution process, the catalyst system comprising (i) a metallocene complex of formula (I) 

Catalyst system for producing polyethylene copolymers in a high temperature solution polymerization process

Catalyst system, the catalyst system comprising (i) at least one metallocene complex of formula (I) wherein Mt1 is Hf, X is a sigma-donor ligand, R, R, Rare the same or different from each other and can be hydrogen or a saturated linear or branched C-Calkyl, whereby the alkyl group can optionally contain up to 2 heteroatoms belonging to groups 14-16 of the periodic table, or Rand Ror Rand Rcan form a ring having 4 to 6 C-atoms and 1 to 3 double bonds, Rand Rare the same or different from each other and can be saturated linear or branched C-Calkyl, C-Caryl, C-Calkylaryl or C-Carylalkyl groups, which can optionally contain up to 2 heteroatoms belonging to groups 14-16 of the periodic table, n can be 1 to 5, Ar is a C-C-aryl or -heteroaryl group, which can be unsubstituted or substituted by 1 to 5 linear or branched C-Calkyl group(s), and (ii) an aluminoxane cocatalyst and (iii) optionally an aluminium alkyl compound AI(R), with Rbeing a linear or branched C-C-alkyl group. 

Aluminoxane-activated metallocene catalysts

Catalyst system for producing ethylene copolymers in a high temperature solution process, the catalyst system comprising (i) a metallocene complex of formula (I), M is Hf or a mixture with Zr, provided that more than 50% by moles of the complex of Formula I has M=Hf, X is a sigma ligand, R are the same or different from each other and can be saturated linear or branched C-Calkyl, C-Caryl, C-Calkylaryl or C-Carylalkyl groups, which can optionally contain up to 2 heteroatoms or silicon atoms, Ris a C-C-aryl, which can be unsubstituted or substituted by one or up to 5 linear or branched C-Calkyl group(s), Ris a saturated linear or cyclic C-Calkyl group or a branched CRRRgroup, wherein Ris hydrogen or an C-Calkyl group and Rand Rare the same or are different and can be an C-Calkyl group and (ii) a boron containing cocatalyst. 

Catalyst system for producing ethylene copolymers in a high temperature solution process, the catalyst system comprising:  

Catalyst system, the catalyst system comprising (i) at least one metallocene complex of formula (I), (I) wherein Mt1 is Hf, X is a sigma-donor ligand, R, R, Rare the same or different from each other and can be hydrogen or a saturated linear or branched C-Calkyl, whereby the alkyl group can optionally contain up to 2 heteroatoms belonging to groups 14-16 of the periodic table, or Rand Ror Rand Rcan form a ring having 4 to 6 C-atoms and 1 to 3 double bonds, Rand Rare the same or different from each other and can be saturated linear or branched C-Calkyl, C-Caryl, C-Calkylaryl or C-Carylalkyl groups, which can optionally contain up to 2 heteroatoms belonging to groups 14-16 of the periodic table, n can be 1 to 5, Ar is a C-C-aryl or -heteroarylgroup, which can be unsubstituted or substituted by 1 to 5 linear or branched C-Calkyl group(s), and (ii) a boron containing cocatalyst. 

Borate-activated metallocene catalysts

Prepolymerized catalyst component for the polymerization of olefins CH&#x2550;CHR, wherein R is hydrogen or a C-Chydrocarbyl group, comprising a solid catalyst component characterized by comprising Mg, Ti halogen and an electron donor (ID) selected from the alkyl esters of aromatic dicarboxylic acids in such an amount that the molar ratio ID/Mg ranges from 0.025 to 0.07 and the Mg/Ti molar ratio is higher than 13, said prepolymerized catalyst component containing an amount of ethylene pre-polymer up to 50 g per g of said solid catalyst component.

Catalyst components for the polymerization of olefins

Catalyst component comprising Mg, Ti, and halogen atoms, and is characterized in that (a) the Ti atoms are present in an amount higher than 4% based on the total weight of the said catalyst component, (b) the amount of Mg and Ti atoms is such that the Mg/Ti molar ratio is higher than 2 and (c) by a X-ray diffraction spectrum, in which, in the range of 2&#x3b8; diffraction angles between 47&#xb0; and 52&#xb0;, at least two diffraction lines are present at diffraction angles 2&#x3b8; of 48.3&#xb1;0.2&#xb0;, and 50.0&#xb1;0.2&#xb0;, the most intense diffraction lines being the one at 2&#x3b8; of 50.0&#xb1;0.2&#xb0;, the intensity of the other diffraction line being equal to or lower than the intensity of the most intense diffraction line.

Catalyst components for the polymerization of olefins and catalysts therefrom obtained

Adducts comprising a MgCl, an alcohol ROH in which R is a C1-C10 hydrocarbon group, present in a molar ratio with MgClranging from 0.5 to 5 and less than 15% wt, based on the total weight of the adduct, of a metal salt of an aliphatic carboxylic acid having from 8 to 22 carbon atoms.

Magnesium dichloride-alcohol adducts and catalyst components obtained therefrom

A solution process for polymerizing one or more &#x3b1;-olefins of formula CH&#x2550;CHR, where R is H or an alkyl radical C, to produce a polyolefin soluble in the reaction medium, the process comprising: a) polymerizing said one or more &#x3b1;-olefins in a solution phase in the presence of a polymerization catalyst and a inert solvent having a vapor pressure lower than 100 kPa at 20&#xb0; C.; b) separating the produced polyolefin from the unreacted monomers and the inert solvent by means of a sequence of at least three volatilization chambers operating at a decreasing pressure, the second devolatilization chamber being operated at a pressure from 0.8 to 5 bar.

Solution polymerization process for preparing polyolefins

A catalyst system solution obtainable by a process comprising the following steps:

Catalyst system for the polymerization of olefin

Process for preparing TiOpowders starting from a liquid comprising chlorinated titanium compounds, the process comprising:

Preparation for Tio2 powders from a waste liquid containing titanium compounds

A process for producing a polymer of ethylene containing from 0.1 to 99% by mol of one or more derived units of alpha-olefins and optionally from 0 to 5% by mol polyene, comprising contacting ethylene, one or more alpha-olefins and optionally said polyene, in the presence of a catalyst system obtainable by contacting:  

Process for the copolymerization of ethylene

A process for producing a polymer of ethylene containing from 0.1 to 50% by weight of one or more derived units of alpha-olefins fo formula CH&#x2550;CHR, wherein R is a C-Calkyl radical, comprising contacting, under polymerization conditions, ethylene and one or more alpha-olefins in the presence of a catalyst system obtainable by contacting: a) a metallocene compound of formula (I) wherein: M is zirconium titanium or hafminum, X, equal to or different from each other, is hydrogen halogen or an hydrocarbyl radical, R, R, R, R, R, R, R, Rand R, equal to or different from each other are hydrogen atoms, halogen atoms, or hydrocarbyl radicals; and b) an alumoxane or a compound capable of forming an alkyl metallocene cation. 

A solution polymerization process for obtaining isotactic, crystalline or crystallizable 1-butene/propylene polymers comprising contacting under polymerization conditions at a temperature ranging from 50&#xb0; C. to 90&#xb0; C. 1-butene and propylene in the presence of a catalyst system obtainable by contacting:

Process for the preparation of 1-butene/propylene copolymers

A solution process for polymerizing one or more &#x3b1;-olefins of the formula CH&#x2550;CHR, where R is H or an alkyl radical C-C, to produce a polymer that is soluble in the reaction medium, comprising the steps of:

Liquid phase process for polymerizing olefins

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Ferrara, Italy

Anna Fait