Patent · US Active

Polyethylene pipe resins

US7879946B2 · kind B2 · utility

1Cited by

0References

20Claims

0Family size

Assignee

INEOS MANUFACTURING BELGIUM NV · BE

Inventors

Anne Goldberg · Ath, BE
Fabian Siberdt · Brussels, BE

Key dates

Filing date	Apr 12, 2007
Grant date	Feb 1, 2011
Priority date	—
Expiry date	Feb 1, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L2314/06
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A polyethylene resin comprising from 44 to 55 wt % of a high molecular weight polyethylene fraction, and from 45 to 56 wt % of a low molecular weight polyethylene fraction; the high molecular weight polyethylene fraction comprising a linear low density polyethylene having a density of from 0.913 to 0.923 g/cm3, and an HLMI of from 0.02 to 0.2 g/10 min; and the low molecular weight polyethylene fraction comprising a high density polyethylene having a density of at least 0.969 g/cm3 and an MI2 of greater than 100 g/10 min; wherein the relationship between the density D of the resin in g/cm3 and the weight fraction of the low molecular weight fraction P1 is defined by 0.055P1+0.916<D<0.034P1+0.937.

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