Basell Polyolefine Gmbh

Basell Poliolefine Italia S.r.l.

Andreas Maus

Gerhardus Meier

Harilaos Mavridis

Bernd Lothar Marczinke

Ulf Schueller

Iakovos Vittorias

Ulf Schüller

Shahram Mihan

Pietro Baita

Elke Damm

Sameer D Mehta

Jens Wiesecke

Harald Schmitz

Maria Di Diego

Diana Doetsch

Lorella Marturano

Diana Dötsch

Timo Hees

Pascal Rebmann

Katharina Elsas

Eric D Day

Sebastian Wilhelm

Giampiero Morini

Volker Dolle

Gianni Collina

Tiziano Dall'Occo

Gabriele Mei

Dario Liguori

Diego Brita

Fabiana Fantinel

Gerd Mannebach

Roberta Pica

A polyethylene composition particularly suited for producing blow-molded hollow articles, having the following features:

Polyethylene composition for blow molding having an improved swell behavior

A process for producing a low density polyethylene with modified melt flow index, comprising subjecting to thermal visbreaking a precursor polyethylene (I) comprising 35% by weight or more of LDPE.

Process for modifiyng the melt flow index of low density polyethylene

A process for producing a low density polyethylene with modified melt flow index, comprising subjecting to thermal visbreaking a precursor polyethylene (I) comprising 35% by weight or more of LDPE and blending the so obtained intermediate polyethylene product (II) with an additional polyethylene (III).

A polyethylene composition for producing blown films, made from or containing an ethylene homopolymer or copolymer A) and an ethylene copolymer B) having a MIE value lower than the MIE value of A), the composition having the following features:

Polyethylene composition for films

A polyethylene composition having the following features:

A polyethylene composition having the following features: The polyethylene composition can be used to produce pipes and films.

Polyethylene composition having high mechanical properties and processability

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

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

The present invention relates to a slurry process for preparing an ethylene polymer having a melt flow ratio F/P, which is the ratio among the melt index value measured according to ASTM 1238 condition 'F' and the melt index value measured according to ASTM 1238 condition 'P' of equal to or lower than 27, carried out in two or more stages of polymerization at temperatures in the range from 60 to 120&#xb0; C., in which at least two of the said two or more polymerization stages are carried out under different amounts of molecular weight regulator, said process being carried out in the presence of (A) a solid catalyst component comprising Ti, Mg, halogen, having a porosity (P), measured by the mercury method and due to pores with radius equal to, or lower than, 1 &#x3bc;m, of at least 0.3 cm/g and a surface area determined by BET method, of lower than 100 m/g, and being further characterized by the fact that more than 50% of the titanium atoms are in a valence state lower than 4 and (B) of an organoaluminum compound.

Multistage process for the polymerization of ethylene

An ethylene copolymer, a catalyst system suitable to prepare the ethylene copolymer, and a process to prepare such ethylene copolymer are described. The use of the ethylene copolymer as impact modifier in polyethylene and as compatibilizer in a polymer blend are also described. The ethylene copolymer has a density from 0.855 g/cmto 0.910 g/cm, a polydispersity M/Mlower than 3.5, comprises at least one first ethylene polymer component and at least one second ethylene polymer component having different comonomer contents so as to show at least two predetermined CRYSTAF peak temperatures.

Ethylene copolymers, catalyst system and process for preparing the same

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Frankfurt-am-Main, Germany

Andreas Maus