Patent · US Active

Polyethylene blends and films

US8637607B2 · kind B2 · utility

1Cited by

9References

13Claims

0Family size

Assignee

Equistar Chemicals, LP · US

Inventors

Anil W. Saraf · Mason, US
Stephen M. Imfeld · Mason, US

Key dates

Filing date	Jul 28, 2010
Grant date	Jan 28, 2014
Priority date	—
Expiry date	Sep 1, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/24992
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Disclosed are polyethylene blends and films. The blend comprises from 1 to 99%, based on the weight of the blend, of a medium density polyethylene (MDPE) and from 1 to 99% a polyolefin selected from the group consisting of high density polyethylene (HDPE), linear low density polyethylene (LLDPE), low density polyethylene (LDPE), polypropylene, polybutene, and mixtures thereof. The MDPE is made by high pressure, free radical polymerization and has a density within the range of greater than 0.928 to 0.940 g/cm3 and an MI2 within the range of 0.1 to 1 dg/min. The shrink films made from the blend have strong contraction force and low creep.

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