Stock material or miscellaneous articles – Hollow or container type article – Shrinkable or shrunk
Reexamination Certificate
2008-05-16
2011-12-20
Bernshteyn, Michael M (Department: 1762)
Stock material or miscellaneous articles
Hollow or container type article
Shrinkable or shrunk
C428S218000, C428S451000, C264S176100
Reexamination Certificate
active
08080294
ABSTRACT:
Disclosed in one aspect is a film comprising at least one core layer comprising a blend of at least 20 wt %, by weight of the core layer, of a first linear LLDPE having a molecular weight distribution (Mw/Mn) within the range of from 1.0 to 4.0; and at least 20 wt %, by weight of the core layer, of a second LLDPE—in a certain embodiment a short-chain branched LLDP—having a molecular weight distribution (Mw/Mn) within the range of from 1.0 to 7.0; characterized in that the density of the second LLDPE is greater than the density of the first LLDPE by at least 0.002 g/cm3; and/or the I2of the second LLDPE is greater than the I2of the first LLDPE by at least 0.5 dg/min. In certain embodiments, the first and second LLDPEs are produced by a metallocene-catalyzed reaction. In yet another embodiment, the combined molecular weight distribution (Mw/Mn) of the first and second LLDPEs is greater than 4.0.
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Bernshteyn Michael M
ExxonMobil Oil Corporation
Faulkner Kevin M.
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