Patent · US Active

Process for producing high molecular weight polyethylene

US9034999B2 · kind B2 · utility

14Cited by

18References

15Claims

0Family size

Assignee

Ticona LLC · US

Inventors

Dominique Robert · Montegrosso d'Asti, IT
Julia Hufen · Rheinberg, DE
Kerstin Lüdtke · Markkleeberg, DE
Jens Ehlers · Horst, DE

Key dates

Filing date	Jul 1, 2011
Grant date	May 19, 2015
Priority date	—
Expiry date	Oct 22, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2410/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

In a process for producing polyethylene having a molecular weight of at least 3×105 g/mol as determined by ASTM 4020, ethylene is contacted under polymerization conditions with a slurry of a catalyst composition in at least one hydrocarbon. The catalyst composition comprises a Group 4 metal complex of a phenolate ether ligand and the slurry includes from about 5 to less than 40 ppm per liter of a compound effective to increase the conductivity of said at least one hydrocarbon.

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