Patent · US Active

Multimodal polyethylene composition, mixed catalyst and process for preparing the composition

US8722833B2 · kind B2 · utility

14Cited by

16References

6Claims

0Family size

Assignee

Basell Polyolefine GmbH · DE

Inventors

Jennifer Kipke · Frankfurt, DE
Shahram Mihan · Bad Soden, DE
Rainer Karer · Kaiserslautern, DE
Harald Schmitz · Weinheim, DE

Key dates

Filing date	Dec 18, 2007
Grant date	May 13, 2014
Priority date	—
Expiry date	Nov 4, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/52
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A multimodal polyethylene composition comprising at least three ethylene polymer fractions having distinct molecular weights or comonomer contents, the at least three ethylene polymer fractions comprising at least one first ethylene polymer fraction having a first molecular weight, at least one second ethylene polymer fraction having a second molecular weight higher than the first molecular weight, and at least one third ethylene polymer fraction having a third molecular weight higher than the first molecular weight, wherein the at least one first ethylene polymer fraction and the at least third ethylene polymer fraction are prepared by the use of a first and, respectively, third catalyst of the single site type.

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