Patent · US Active

Polymers

US9175119B2 · kind B2 · utility

7Cited by

3References

29Claims

0Family size

Assignee

INEOS EUROPE AG · CH

Inventors

Gaelle Pannier · Brussels, BE
Choon Kooi Chai · Overijse, BE

Key dates

Filing date	Dec 7, 2012
Grant date	Nov 3, 2015
Priority date	—
Expiry date	Dec 7, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F4/6592
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Copolymers of ethylene and α-olefins having (a) a density in the range 0.900-0.940 g/cm3, (b) a melt index MI2 (2.16 kg, 190° C.) in the range 0.01-50 g/10 min, (c) a molecular weight distribution (Mw/Mn, by conventional GPC) in the range 2.0-4.5, (d) a comonomer partition factor, Cpf>1, and (e) a melt index MI2 (2.16 kg, 190° C.) normalized Dow Rheology Index (DRI), [DRI/MI2] in the range 3-20. The copolymers may be prepared using catalyst systems containing activating supports. The copolymers are suitably prepared in the gas phase preferably in a single reactor. The copolymers exhibit unique properties in particular with respect to their rheology.

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