Basell Polyolefine Gmbh

Claudio Fibla

Gerhardus Meier

Ulf Schueller

Bernd Lothar Marczinke

Diana Doetsch

Elke Damm

Danir Khayrullin

Christoph Wolf

Michael Deuerling

Erich Neumann

Shahram Mihan

Dieter Littmann

Andre-Armand Finette

Ulf Schüller

Georg Groos

Sven Wolfram

Peter Bisson

Juergen Mohrbutter

Rainer Sattel

Diana Dötsch

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

Polyethylene composition having environmental stress cracking resistance

A polyethylene composition for producing blow-molded hollow articles, having the following features: 1) a density from 0.945 to 0.958 g/cm, determined according to ISO 1183 at 23&#xb0; C.; 2) a ratio MIF/MI10 from 2 to 10; 3) a &#x3b7;from 200,000 to 800,000 Pa&#xb7;s; 4) a LCBI equal to or lower than 0.80; and 5) a ratio (&#x3b7;/1000)/LCBI equal to or greater than 350.

Polyethylene composition having high swell ratio, fnct and impact resistance

Polyethylene composition for blow molding having high stress cracking resistance

Polyethylene composition for blow molding having high swell ratio and impact resistance

A process for the preparation of an ethylene polymer including the step of polymerizing ethylene or copolymerizing ethylene and one or more other olefins in the presence of a Phillips-type chromium catalyst in a gas-phase polymerization reactor containing a reactor bed of particulate polymer, wherein the gas-phase polymerization reactor is equipped with a cycle gas line, wherein the reactor gas returned to the polymerization reactor through the cycle gas line has been condensed in part and the amount of liquid in the returned reactor gas is from 0.5 wt. % to 10 wt. % based upon the total weight of the reactor gas/liquid composition, the polymerization is carried out at from 108&#xb0; C. to 125&#xb0; C., and an aluminum alkyl is fed into the polymerization reactor in an amount in the range of from 0.0025 mole to 0.1 mole per ton of dosed ethylene.

Olefin polymerization process

A process for separating polymeric and gaseous components of a polymer-monomer mixture at a pressure of from 0.12 MPa to 0.6 MPa and a temperature of from 120&#xb0; C. to 300&#xb0; C. in a separation vessel is provided. The separation vessel has a vertically arranged cylindrical shape with a ratio of length to diameter L/D of from 0.6 to 10 and an inlet pipe capable of introducing the polymer-monomer mixture into the separation vessel which the inlet pipe extends vertically from the top of the separation vessel into the separation vessel. Further a process for preparing ethylene homopolymers or copolymers from ethylenically unsaturated monomers in the presence of free-radical polymerization initiators at temperatures from 100&#xb0; C. to 350&#xb0; C. and pressures in the range of from 110 MPa to 500 MPa comprising such a process for separating a polymer-monomer mixture is provided.

Process for separating components of a polymer-monomer mixture obtained by high-pressure polymerization of ethylenically unsaturated monomers

The present disclosure generally relates to a process for separating polymeric and gaseous components of a reaction mixture obtained by high-pressure polymerization of ethylenically unsaturated monomers in the presence of free-radical polymerization initiators into a gaseous fraction and a liquid fraction in a separation vessel, wherein the filling level of the liquid fraction in the separation vessel is measured by a radiometric level measurement system comprising at least two radioactive sources and at least three radiation detectors, and the filling level is controlled by a product discharge valve which operates based on data coming from the level measurement system.

Process for separating components of a reaction mixture obtained by high-pressure polymerization of ethylenically unsaturated monomers with improved level control

The present disclosure relates to a vessel for separating, at a pressure of from 10 MPa to 50 MPa, a composition comprising liquid components and gaseous components into a liquid fraction and a gaseous fraction, wherein

Vessel for separating components of a reaction mixture obtained by high-pressure polymerization of ethylenically unsaturated monomers with integrated bursting discs

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Koenigstein im Taunus, Germany

Claudio Fibla