Verfahren zur Steuerung des Quellverhältnisses einer Polyethylenzusammensetzung

Details

Veröffentlichungs-Nr.

EP4361184

Aktenzeichen

EP22203732

Anmeldetag

26. Oktober 2022

Veröffentlichung

1. Mai 2024

Rechtsraum

EP

IPC

C08F10/00C08F110/02C08L23/08C08F210/16

Abstract

A process for controlling the swell ratio of a polyethylene composition having a specified melt flow rate. The polyethylene composition is prepared in a process conducted in a polymerization apparatus comprising three or more polymerization zones in the presence of a polymerization catalyst and hydrogen as molecular weight regulator and the polymerization zones differ in the ratio of hydrogen to ethylene present in the polymerization zones and so forming, in the polymerization zones, three or more polyethylene components which differ in the average molecular weight, wherein one of the polyethylene components prepared in one of the polymerization zones has the highest average molecular weight and one of the polyethylene components prepared in another one of the polymerization zones has the second-highest average molecular weight.

Anmelder

Firma

Basell Polyolefine GmbH

Land

🇩🇪 Deutschland

Fachgebiete