Patent · US Active

Gas-phase process for the polymerization of alpha-olefins

US8084557B2 · kind B2 · utility

0Cited by

5References

21Claims

0Family size

Assignee

Basell Polyolefine GmbH · DE

Inventors

Manfred Hecker · Linz, DE
Markus Schopf · Bonn, DE
Axel Hamann · Kerpen, DE
Paulus De Lange · Wesseling, DE

Key dates

Filing date	Dec 18, 2008
Grant date	Dec 27, 2011
Priority date	—
Expiry date	Dec 18, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S526/901
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A continuous gas-phase process for the polymerization of alpha-olefins, in particular ethylene, comprising passing an alpha-olefin monomer stream through an oil filter in order to reduce the amount of oil to less than 8 ppm, and polymerizing the thus purified monomer feed in gas-phase reactor; the reduction of the amount of oil improves the operability of the plant over time.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.