Stock material or miscellaneous articles – Composite – Of addition polymer from unsaturated monomers
Reexamination Certificate
2008-07-03
2009-12-15
Teskin, Fred M (Department: 1796)
Stock material or miscellaneous articles
Composite
Of addition polymer from unsaturated monomers
C428S339000, C428S516000, C428S523000, C053S427000
Reexamination Certificate
active
07632573
ABSTRACT:
The invention relates to a polymer comprising units derived from ethylene having: a) a Melt Index of from 0.05 to 20 g/10 min; b) at least 10 per 1000 C-atoms of short chain branches, containing five carbon atoms or less, and less than 3.5 mol %, of units derived from a copolymerizable ethylenically unsaturated ester, c) a density of from 0.90 to 0.94 g/cm3, preferably 0.91 to 0.935 g/cm3, especially 0.92 to 0.93 g/cm3, and d) a relaxation time as described herein of at least 10 s. The polymer may be used for stretch hood film, preferably as a blown film coextruded tube comprising: a) a core of the above polymer; and b) a skin layer, on each side of the core which may be of the same or different composition, comprising at least 60 wt % of an LLDPE having density of 0.91 to 0.94 g/cm3.
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Donck Jan C.
Lauwers Bart
Ohlsson Stefan Bertil
Vaes Jef
ExxonMobil Chemical Patents Inc.
Teskin Fred M
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