Patent · US Active

Process for preparing ethylene copolymers

US8222356B2 · kind B2 · utility

32Cited by

25References

3Claims

0Family size

Assignee

Basell Polyolefine GmbH · DE

Inventors

Jennifer Kipke · Frankfurt, DE
Shahram Mihan · Bad Soden, DE
Rainer Karer · Kaiserslautern, DE
Dieter Lilge · Schifferstadt, DE

Key dates

Filing date	Jul 21, 2011
Grant date	Jul 17, 2012
Priority date	—
Expiry date	Jul 21, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/1345
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for preparing polyethylene which comprises ethylene homopolymers and/or copolymers of ethylene with 1-alkenes and has a molar mass distribution width Mw/Mn of from 5 to 30, a density of from 0.92 to 0.955 g/cm3, a weight average molar mass Mw of from 50000 g/mol to 500 000 g/mol and has from 0.01 to 20 branches/1000 carbon atoms and a z-average molar mass Mz of less than 1 million g/mol.

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